You searched for subject:(Avionics).
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Ohio University
1.
Aab, Steven D.
Performance Analysis of the Local Area Augmentation System
as the Position Sensor for the Runway Incursion Prevention
System.
Degree: MS, Electrical Engineering & Computer Science
(Engineering and Technology), 2005, Ohio University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1121182284 
► Runway incursions have become an increasing problem at airports across the country. The National Safety Board has listed them among their "Most Wanted" safety…
(more)
▼ Runway incursions have become an increasing
problem at airports across the country. The National Safety Board
has listed them among their "Most Wanted" safety improvements. The
Federal Aviation Administration (FAA) and National Aeronautics and
Space Administration (NASA) have been developing systems intended
to reduce and prevent the number of runway incursions. Both
agencies have been working on systems utilizing the Local Area
Augmentation System (LAAS) as the position sensor for the Automatic
Dependent Surveillance and Broadcast (ADS-B).
The
Avionics Engineering Center of Ohio University has
been involved with the development of the NASA sponsored Runway
Incursion Prevention System (RIPS). The main responsibility for the
Avionics Engineering Center has been the installation, operation,
and maintenance of the LAAS ground facility as well as providing
expertise and assessing the system’s performance.
The testing for RIPS took place at the Dallas/Ft. Worth
International Airport from 24 September 2000 until 26 October 2000.
This thesis provides a detailed position accuracy assessment of the
LAAS installation used for the NASA RIPS. This assessment provides
statistical information on position accuracy as compared to
industry standards for airborne LAAS receivers and recommendations
for the application of Global Navigation Satellite System (GNSS)
positioning equipment in supporting surface
guidance.
Advisors/Committee Members: DiBenedetto, Michael (Advisor).
Subjects/Keywords: avionics
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APA (6th Edition):
Aab, S. D. (2005). Performance Analysis of the Local Area Augmentation System
as the Position Sensor for the Runway Incursion Prevention
System. (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1121182284
Chicago Manual of Style (16th Edition):
Aab, Steven D. “Performance Analysis of the Local Area Augmentation System
as the Position Sensor for the Runway Incursion Prevention
System.” 2005. Masters Thesis, Ohio University. Accessed January 17, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1121182284.
MLA Handbook (7th Edition):
Aab, Steven D. “Performance Analysis of the Local Area Augmentation System
as the Position Sensor for the Runway Incursion Prevention
System.” 2005. Web. 17 Jan 2021.
Vancouver:
Aab SD. Performance Analysis of the Local Area Augmentation System
as the Position Sensor for the Runway Incursion Prevention
System. [Internet] [Masters thesis]. Ohio University; 2005. [cited 2021 Jan 17].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1121182284.
Council of Science Editors:
Aab SD. Performance Analysis of the Local Area Augmentation System
as the Position Sensor for the Runway Incursion Prevention
System. [Masters Thesis]. Ohio University; 2005. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1121182284
Stellenbosch University
2.
Steele, Angus William Du Toit.
Development of a close quarters collision-protected aerial drone.
Degree: MEng, Electrical and Electronic Engineering, 2019, Stellenbosch University
URL: http://hdl.handle.net/10019.1/107108
► ENGLISH ABSTRACT: This thesis presents the design, implementation and verification of a close quarters, collisionprotected aerial drone. The ultimate goal of this work is to…
(more)
▼ ENGLISH ABSTRACT: This thesis presents the design, implementation and verification of a close quarters, collisionprotected aerial drone. The ultimate goal of this work is to enable an unmanned aerial drone to navigate a given set of waypoints in a partially-known environment while avoiding collisions with unexpected obstacles.
The airborne platform was selected and the avionics system was designed to satisfy the operational requirements for CECAD (Confined Environment Capable Aerial Drone), a collision-protected aerial drone that could be used for mapping partially-known and potentially hazardous spaces
found in an underground mining environment. Following a survey of existing rotorcraft designs,
an overlapping quadrotor configuration was selected for the vehicle, since it was deemed to be the most suitable for flight in narrow confined spaces. The PixHawk, open-source flight controller was chosen due to its integrated sensors and communication ports, well-developed open-source flight
control software and its large community of users. Ultrasonics were chosen as the proximity sensors
used for obstacle avoidance.
Modelling and system identification of the actual vehicle were performed to create a representative
mathematical model of the aircraft to be used for flight control design and verification. A complete
flight control system was designed for the vehicle, and a waypoint navigation system with integrated
obstacle avoidance was developed. The flight controllers were designed to provide tight position
tracking and disturbance rejection, to enable stable flight and collision avoidance in a confined
environment. A heading controller was added to keep the nose of the vehicle pointed generally
in the direction of the vehicle’s direction of travel. The waypoint navigation system schedules a
sequence of position waypoints for the flight controllers, while the integrated obstacle avoidance
function superimposes an obstacle avoidance velocity command on the waypoint navigation velocity
command.
The system was implemented and verified in simulation using a simulation model that was created
in Matlab and Simulink. Simulation models were created for the vehicle, the environment, the
flight control system, and the waypoint navigation with obstacle avoidance. The simulation results
show that the vehicle can successfully navigate waypoints in a partially-known environment while
avoiding unexpected obstacles.
AFRIKAANSE OPSOMMING: Hierdie tesis beskryf die ontwerp, implementering, en verifikasie van ’n naby-kwartiere, botsingbeskermde
hommeltuig. Die uiteindelike doel van die navorsing is om ’n onbemande hommeltuig
in staat te stel om ’n gegewe stel wegpunte in ’n gedeeltelik-bekende omgewing te navigeer en
terselfdertyd botsings met onverwagte hindernisse te vermy.
Die lugraam is gekies en die vlugelektronika is ontwerp om die operasionele vereistes te bevredig
vir CECAD ("Confined Environment Capable Aerial Drone"), ’n botsing-beskermde onbemande
hommeltuig wat gebruik kan word om gedeeltelik-bekende…
Advisors/Committee Members: Engelbrecht, Japie, Treurnicht, J., Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering..
Subjects/Keywords: UCTD; Drone aircraft; Avionics; Ultrasonics
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APA (6th Edition):
Steele, A. W. D. T. (2019). Development of a close quarters collision-protected aerial drone. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/107108
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Steele, Angus William Du Toit. “Development of a close quarters collision-protected aerial drone.” 2019. Thesis, Stellenbosch University. Accessed January 17, 2021.
http://hdl.handle.net/10019.1/107108.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Steele, Angus William Du Toit. “Development of a close quarters collision-protected aerial drone.” 2019. Web. 17 Jan 2021.
Vancouver:
Steele AWDT. Development of a close quarters collision-protected aerial drone. [Internet] [Thesis]. Stellenbosch University; 2019. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10019.1/107108.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Steele AWDT. Development of a close quarters collision-protected aerial drone. [Thesis]. Stellenbosch University; 2019. Available from: http://hdl.handle.net/10019.1/107108
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Cranfield University
3.
Sung-Yuan, Ko.
Investigation and development of DSP algorithms/hardware for real time power spectral density estimation.
Degree: PhD, 1993, Cranfield University
URL: http://dspace.lib.cranfield.ac.uk/handle/1826/4197
;
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359499
► This research is concerned with the Power Spectrum Density Estimation with em- phasIze on the bigh-resolution algorithms and their real-time implementations. Tl-ie classical PSD estimation…
(more)
▼ This research is concerned with the Power Spectrum Density Estimation with em- phasIze on the bigh-resolution algorithms and their real-time implementations. Tl-ie classical PSD estimation methods are fast and robust. but their resolutions may not be adequate when the record length is short. On the other hand when the record length is short the autoregressive parametric methods have higher resolution capability, but they may have spurious peaks if the order of the model is chosen too high in the attempt to increase the resolution when the SNR is low. An algorithm is proposed to combine the spectrum of the classical method and the autoregressive model. This allows the overestimation of the order of the autoregressive model. The spuriot-is peaks that result are then suppressed by the low values in the spectrum of the classical nict liods. I'lic wide specl ral mairilobe of the classical method, on the other liand, serves to indicate the area where the true signals are located. This alleviates the difficult order selection problem of the parametric methods. An adaptive version of this method is also proposed. It is based on the adaptive autoregressive and adaptive maximum eigenvector concept. It can track a slowly changing environment. With I lie combination of these txN, o methods. it is shown that it. has the high-resolution performance of AR method ýN, ith improved performance in the noisy environment.
Subjects/Keywords: 621.3192; Avionics
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APA (6th Edition):
Sung-Yuan, K. (1993). Investigation and development of DSP algorithms/hardware for real time power spectral density estimation. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/4197 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359499
Chicago Manual of Style (16th Edition):
Sung-Yuan, Ko. “Investigation and development of DSP algorithms/hardware for real time power spectral density estimation.” 1993. Doctoral Dissertation, Cranfield University. Accessed January 17, 2021.
http://dspace.lib.cranfield.ac.uk/handle/1826/4197 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359499.
MLA Handbook (7th Edition):
Sung-Yuan, Ko. “Investigation and development of DSP algorithms/hardware for real time power spectral density estimation.” 1993. Web. 17 Jan 2021.
Vancouver:
Sung-Yuan K. Investigation and development of DSP algorithms/hardware for real time power spectral density estimation. [Internet] [Doctoral dissertation]. Cranfield University; 1993. [cited 2021 Jan 17].
Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/4197 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359499.
Council of Science Editors:
Sung-Yuan K. Investigation and development of DSP algorithms/hardware for real time power spectral density estimation. [Doctoral Dissertation]. Cranfield University; 1993. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/4197 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359499
Oklahoma State University
4.
Bycroft, Christopher L.
Identification of Knowledge, Skills, and Abilities Required for Aircraft Electronics Technicians.
Degree: Applied Educational Studies, 2018, Oklahoma State University
URL: http://hdl.handle.net/11244/321529
► Advances in electronics technology have transformed the cockpits of large and small modern aircraft. This transformation has created new challenges for the aviation electronics industry…
(more)
▼ Advances in electronics technology have transformed the cockpits of large and small modern aircraft. This transformation has created new challenges for the aviation electronics industry and the technicians that support and maintain aircraft. To meet these challenges, it is important to know the knowledge skills, and abilities required by these new technologies. The primary goal of this study is to determine the knowledge, skills, and abilities currently used by aircraft electronics technicians as defined by the technicians and managers working in the aviation industry. A secondary goal is to determine the differences in knowledge, skills, and abilities used in the commercial and general aviation industry segments. A third goal is to determine the type of training being used for initial training and required new training of these technicians. The study limited participants to only those actively working as technicians or actively supervising technicians. Participants were sought from all business sectors through personal contacts and professional trade organizations, by means of mass emailing and personal solicitations. A booth was also setup at the 2017 Aircraft Electronics Association national conference in New Orleans to solicit qualified participants. Study findings identified fiber optics and MEMS represented new advances in technology that will increase in use on modern aircraft for years to come. Establishment of these elements of new technology will result in a need for new knowledge, skills, and abilities for the modern technicians. Additionally, in the commercial and regional airlines segment of the industry
avionics technicians with A & P certificates and the most experience are promoted to bench technician positions that do not work directly on-aircraft.
Advisors/Committee Members: Depperschmidt, Chad L. (advisor), Bliss, Timm J. (committee member), Loffi, Jon M. (committee member), Miller, Bridget M. (committee member).
Subjects/Keywords: avionics; electronics; ksa's; ncatt; technician
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APA (6th Edition):
Bycroft, C. L. (2018). Identification of Knowledge, Skills, and Abilities Required for Aircraft Electronics Technicians. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/321529
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bycroft, Christopher L. “Identification of Knowledge, Skills, and Abilities Required for Aircraft Electronics Technicians.” 2018. Thesis, Oklahoma State University. Accessed January 17, 2021.
http://hdl.handle.net/11244/321529.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bycroft, Christopher L. “Identification of Knowledge, Skills, and Abilities Required for Aircraft Electronics Technicians.” 2018. Web. 17 Jan 2021.
Vancouver:
Bycroft CL. Identification of Knowledge, Skills, and Abilities Required for Aircraft Electronics Technicians. [Internet] [Thesis]. Oklahoma State University; 2018. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/11244/321529.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bycroft CL. Identification of Knowledge, Skills, and Abilities Required for Aircraft Electronics Technicians. [Thesis]. Oklahoma State University; 2018. Available from: http://hdl.handle.net/11244/321529
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Delft University of Technology
5.
Stout, E.P. (author).
Design and evaluation of a simulation environment for evaluating departure scheduling algorithms.
Degree: 2011, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:9a99f383-65ad-4e9e-b6f2-bd90a9088df9
► To meet traffic demand predictions, the global air traffic management (ATM) system needs to be changed. Several visions on future ATM operations exist. A commonality…
(more)
▼ To meet traffic demand predictions, the global air traffic management (ATM) system needs to be changed. Several visions on future ATM operations exist. A commonality between the different visions is 4D Trajectory management. This function enables plan-based operation as opposed to the state-based approach of the present system. Plan-based operation enables the optimization of traffic flows by generating 4D trajectories. A part of the traffic flow generation process is scheduling. The research presented in this thesis focuses on these scheduling opportunities. In this research the scheduling opportunities for departure traffic at a runway are investigated. A study of the existing literature showed that the most common scheduling algorithms currently available can be divided into four categories: first come first served, brand-and-bound, greedy search and genetic algorithms. A simulation environment is designed for evaluation of the departure scheduling algorithms using various input parameters like traffic situation, airport map and algorithm. The four algorithm categories are evaluated on output aspects like delay and robustness of the schedule and are compared with the current method of traffic scheduling. The evaluation of the scheduling algorithms shows that the performance of the current method of scheduling departure traffic performs well in comparison with the tested algorithms. In case of no disturbances the genetic algorithm performs slightly better than the current method, but the other algorithms do not have a better performance. When disturbances are taken into account, a bigger performance increase can be obtained by using scheduling algorithms.
Group of Microwave Technology and Systems for Radar (MTSR)
Telecommunications
Electrical Engineering, Mathematics and Computer Science
Advisors/Committee Members: Koeners, G.J.M. (mentor).
Subjects/Keywords: avionics; scheduling algorithms; departure scheduling; simulation environment
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APA (6th Edition):
Stout, E. P. (. (2011). Design and evaluation of a simulation environment for evaluating departure scheduling algorithms. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:9a99f383-65ad-4e9e-b6f2-bd90a9088df9
Chicago Manual of Style (16th Edition):
Stout, E P (author). “Design and evaluation of a simulation environment for evaluating departure scheduling algorithms.” 2011. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:9a99f383-65ad-4e9e-b6f2-bd90a9088df9.
MLA Handbook (7th Edition):
Stout, E P (author). “Design and evaluation of a simulation environment for evaluating departure scheduling algorithms.” 2011. Web. 17 Jan 2021.
Vancouver:
Stout EP(. Design and evaluation of a simulation environment for evaluating departure scheduling algorithms. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:9a99f383-65ad-4e9e-b6f2-bd90a9088df9.
Council of Science Editors:
Stout EP(. Design and evaluation of a simulation environment for evaluating departure scheduling algorithms. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:9a99f383-65ad-4e9e-b6f2-bd90a9088df9
Texas A&M University
6.
Ruff, Joshua Thomas.
Radio Altimeter Tolerance of Wireless Avionics Intra-Communications Systems.
Degree: MS, Electrical Engineering, 2019, Texas A&M University
URL: http://hdl.handle.net/1969.1/187587
► Avionics in modern aircraft have multiple redundant wiring paths in case of failure. The aerospace industry acquired spectrum for wireless avionics which would reduce the…
(more)
▼ Avionics in modern aircraft have multiple redundant wiring paths in case of failure. The aerospace industry acquired spectrum for wireless
avionics which would reduce the amount of necessary wiring, but must prove compatibility with the radio altimeters incumbent to the band for certification. This work covers the development of a reference test bed validated by radio altimeter and aircraft manufacturers. This test bed was automated in a modular framework which allowed the rapid modification of software to suit a wide variety of test conditions. This work also covers the three altimeter testing regimens which used this test bed, and the development of reporting formats which supported the creation of international standards based on these results.
Advisors/Committee Members: Huff, Gregory H (advisor), Chamberland, Jean-Francois (advisor), Nevels, Robert D (committee member), Hartl, Darren (committee member).
Subjects/Keywords: Avionics; Wireless Avionics; WAIC; Test-Bed; Radio Altimeters; Altimeter; Interference; Automation; Python
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APA (6th Edition):
Ruff, J. T. (2019). Radio Altimeter Tolerance of Wireless Avionics Intra-Communications Systems. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/187587
Chicago Manual of Style (16th Edition):
Ruff, Joshua Thomas. “Radio Altimeter Tolerance of Wireless Avionics Intra-Communications Systems.” 2019. Masters Thesis, Texas A&M University. Accessed January 17, 2021.
http://hdl.handle.net/1969.1/187587.
MLA Handbook (7th Edition):
Ruff, Joshua Thomas. “Radio Altimeter Tolerance of Wireless Avionics Intra-Communications Systems.” 2019. Web. 17 Jan 2021.
Vancouver:
Ruff JT. Radio Altimeter Tolerance of Wireless Avionics Intra-Communications Systems. [Internet] [Masters thesis]. Texas A&M University; 2019. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1969.1/187587.
Council of Science Editors:
Ruff JT. Radio Altimeter Tolerance of Wireless Avionics Intra-Communications Systems. [Masters Thesis]. Texas A&M University; 2019. Available from: http://hdl.handle.net/1969.1/187587
University of South Africa
7.
Du Toit, Daniel.
Project risk management with avionics projects at SAAB Grintek Defence
.
Degree: 2009, University of South Africa
URL: http://hdl.handle.net/10500/3123
► The worldwide aerospace industry is often characterised by major delays in development and delivery of large aircraft programmes. Suppliers often suffer financial losses and reputational…
(more)
▼ The worldwide aerospace industry is often characterised by major delays in development and delivery of large aircraft programmes. Suppliers often suffer financial losses and reputational damage as a result of underestimating project risks.
This research investigates the quality of project risk management within one of the players in the South African
avionics industry, Saab Grintek Defence (SGD). The research investigates the knowledge level, application of risk management principles and behaviour of project teams within SGD.
The research study concluded that the quality of project risk management within SGD is of an average standard. The main contributor to project risks in SGD is time risk, followed by human resource risk.
Advisors/Committee Members: Du Toit, G.S (advisor).
Subjects/Keywords: Project risk management;
Aerospace;
Avionics
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APA ·
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Manager
APA (6th Edition):
Du Toit, D. (2009). Project risk management with avionics projects at SAAB Grintek Defence
. (Masters Thesis). University of South Africa. Retrieved from http://hdl.handle.net/10500/3123
Chicago Manual of Style (16th Edition):
Du Toit, Daniel. “Project risk management with avionics projects at SAAB Grintek Defence
.” 2009. Masters Thesis, University of South Africa. Accessed January 17, 2021.
http://hdl.handle.net/10500/3123.
MLA Handbook (7th Edition):
Du Toit, Daniel. “Project risk management with avionics projects at SAAB Grintek Defence
.” 2009. Web. 17 Jan 2021.
Vancouver:
Du Toit D. Project risk management with avionics projects at SAAB Grintek Defence
. [Internet] [Masters thesis]. University of South Africa; 2009. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10500/3123.
Council of Science Editors:
Du Toit D. Project risk management with avionics projects at SAAB Grintek Defence
. [Masters Thesis]. University of South Africa; 2009. Available from: http://hdl.handle.net/10500/3123
Queensland University of Technology
8.
Eng, Pillar C.S.
Path planning, guidance and control for a UAV forced landing.
Degree: 2011, Queensland University of Technology
URL: https://eprints.qut.edu.au/43898/
► A forced landing is an unscheduled event in flight requiring an emergency landing, and is most commonly attributed to engine failure, failure of avionics or…
(more)
▼ A forced landing is an unscheduled event in flight requiring an emergency landing, and is most commonly attributed to engine failure, failure of avionics or adverse weather. Since the ability to conduct a successful forced landing is the primary indicator for safety in the aviation industry, automating this capability for unmanned aerial vehicles (UAVs) will help facilitate their integration into, and subsequent routine operations over civilian airspace. Currently, there is no commercial system available to perform this task; however, a team at the Australian Research Centre for Aerospace Automation (ARCAA) is working towards developing such an automated forced landing system. This system, codenamed Flight Guardian, will operate onboard the aircraft and use machine vision for site identification, artificial intelligence for data assessment and evaluation, and path planning, guidance and control techniques to actualize the landing. This thesis focuses on research specific to the third category, and presents the design, testing and evaluation of a Trajectory Generation and Guidance System (TGGS) that navigates the aircraft to land at a chosen site, following an engine failure. Firstly, two algorithms are developed that adapts manned aircraft forced landing techniques to suit the UAV planning problem. Algorithm 1 allows the UAV to select a route (from a library) based on a fixed glide range and the ambient wind conditions, while Algorithm 2 uses a series of adjustable waypoints to cater for changing winds. A comparison of both algorithms in over 200 simulated forced landings found that using Algorithm 2, twice as many landings were within the designated area, with an average lateral miss distance of 200 m at the aimpoint. These results present a baseline for further refinements to the planning algorithms. A significant contribution is seen in the design of the 3-D Dubins Curves planning algorithm, which extends the elementary concepts underlying 2-D Dubins paths to account for powerless flight in three dimensions. This has also resulted in the development of new methods in testing for path traversability, in losing excess altitude, and in the actual path formation to ensure aircraft stability. Simulations using this algorithm have demonstrated lateral and vertical miss distances of under 20 m at the approach point, in wind speeds of up to 9 m/s. This is greater than a tenfold improvement on Algorithm 2 and emulates the performance of manned, powered aircraft. The lateral guidance algorithm originally developed by Park, Deyst, and How (2007) is enhanced to include wind information in the guidance logic. A simple assumption is also made that reduces the complexity of the algorithm in following a circular path, yet without sacrificing performance. Finally, a specific method of supplying the correct turning direction is also used. Simulations have shown that this new algorithm, named the Enhanced Nonlinear Guidance (ENG) algorithm, performs much better in changing winds, with cross-track errors at the approach point within…
Subjects/Keywords: UAV; path planning; forced landing; emergency landing; avionics; automation
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Manager
APA (6th Edition):
Eng, P. C. S. (2011). Path planning, guidance and control for a UAV forced landing. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/43898/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Eng, Pillar C S. “Path planning, guidance and control for a UAV forced landing.” 2011. Thesis, Queensland University of Technology. Accessed January 17, 2021.
https://eprints.qut.edu.au/43898/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Eng, Pillar C S. “Path planning, guidance and control for a UAV forced landing.” 2011. Web. 17 Jan 2021.
Vancouver:
Eng PCS. Path planning, guidance and control for a UAV forced landing. [Internet] [Thesis]. Queensland University of Technology; 2011. [cited 2021 Jan 17].
Available from: https://eprints.qut.edu.au/43898/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Eng PCS. Path planning, guidance and control for a UAV forced landing. [Thesis]. Queensland University of Technology; 2011. Available from: https://eprints.qut.edu.au/43898/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
9.
Bussenot, Robin.
Rendre agile les tests d'intégration des systèmes avioniques par des langages dédiés : Make agile integration tests of avionics systems by specifics languages.
Degree: Docteur es, Réseaux, Télécoms, Systèmes et Architecture, 2018, Université Toulouse III – Paul Sabatier
URL: http://www.theses.fr/2018TOU30128
► Dans l'ingénierie avionique, les tests d'intégration sont cruciaux : ils permettent de s'assurer du bon comportement d'un avion avant son premier vol, ils sont nécessaires…
(more)
▼ Dans l'ingénierie avionique, les tests d'intégration sont cruciaux : ils permettent de s'assurer du bon comportement d'un avion avant son premier vol, ils sont nécessaires au processus de certification et permettent des tests de non-régression à chaque nouvelle version d'un système, d'un logiciel ou d'un matériel. La conception d'un test d'intégration coûte cher car elle mêle la réalisation de la procédure, le paramétrage de nombreux outils couplés au banc de test ainsi que l'adressage des interfaces du système testé. Avec des procédures de test écrites en langage naturel, l'interprétation des instructions d'un test lors de son rejeu manuel peut provoquer des erreurs coûteuses à corriger, en raison notamment des actions précises à entreprendre lors de l'exécution d'une instruction de test. La formalisation et l'automatisation de ces procédures permettraient aux équipes de testeurs de se concentrer sur la réalisation de nouveaux tests exploratoires et sur la mise au point de tels systèmes au plus tôt. Or, un système avionique est composé de plus d'une centaine de systèmes embarqués, chacun concernant des compétences spécifiques. Notre contribution est alors un framework orchestrant les langages de test dédiés à l'intégration de systèmes avioniques dans une vision Agile. Nous introduisons tout d'abord le concept de langage spécifique à un domaine (Domain Specific Language ou DSL) et montrons comment nous l'utilisons pour la formalisation des procédures de test dédiées à un type de système particulier. Ces langages devront pouvoir être utilisés par des testeurs avioniques qui n'ont pas forcément de compétences en informatique. Ils permettent l'automatisation des tests d'intégration, tout en conservant l'intention du test dans la description des procédures. Puis, nous proposons l'approche BDD (Behavior Driven Development) pour valider l'intégration de systèmes par scénarios comportementaux décrivant le comportement attendu de l'avion. Nous nommons Domain Specific Test Languages (DSTL) les langages utilisés par les testeurs. A chaque système (ATA ou Air Transport Association of America) correspond un DSTL métier. Un premier DSTL concernant les systèmes de régulation de l'air a été développé entièrement en tant que preuve du concept à partir de procédures existantes pseudo-formalisées. L'expérimentation s'est poursuivie avec les calculateurs standardisés IMA (Integrated Modular Avionic) pour lesquels les procédures de test sont décrites en langage naturel et sont donc non automatisables. A partir d'un corpus de procédures, nous proposons un premier processus empirique d'identification des patrons de phrases peuplant un DSTL. Le corpus fourni est composé de dix procédures totalisant 108 chapitres de test et 252 tests ou sous-tests comportant au total 3708 instructions pour 250 pages Word. Rendre agile ces tests d'intégration consiste à proposer une approche collaborative pour formaliser un DSTL que ce soit pour les patrons de phrase de la grammaire concrète ou pour les patrons de transformations vers des langages…
Advisors/Committee Members: Percebois, Christian (thesis director), Leblanc, Hervé (thesis director).
Subjects/Keywords: DSL; Agile; Systèmes avioniques; Test; DSL; Agile; Avionics systems
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APA (6th Edition):
Bussenot, R. (2018). Rendre agile les tests d'intégration des systèmes avioniques par des langages dédiés : Make agile integration tests of avionics systems by specifics languages. (Doctoral Dissertation). Université Toulouse III – Paul Sabatier. Retrieved from http://www.theses.fr/2018TOU30128
Chicago Manual of Style (16th Edition):
Bussenot, Robin. “Rendre agile les tests d'intégration des systèmes avioniques par des langages dédiés : Make agile integration tests of avionics systems by specifics languages.” 2018. Doctoral Dissertation, Université Toulouse III – Paul Sabatier. Accessed January 17, 2021.
http://www.theses.fr/2018TOU30128.
MLA Handbook (7th Edition):
Bussenot, Robin. “Rendre agile les tests d'intégration des systèmes avioniques par des langages dédiés : Make agile integration tests of avionics systems by specifics languages.” 2018. Web. 17 Jan 2021.
Vancouver:
Bussenot R. Rendre agile les tests d'intégration des systèmes avioniques par des langages dédiés : Make agile integration tests of avionics systems by specifics languages. [Internet] [Doctoral dissertation]. Université Toulouse III – Paul Sabatier; 2018. [cited 2021 Jan 17].
Available from: http://www.theses.fr/2018TOU30128.
Council of Science Editors:
Bussenot R. Rendre agile les tests d'intégration des systèmes avioniques par des langages dédiés : Make agile integration tests of avionics systems by specifics languages. [Doctoral Dissertation]. Université Toulouse III – Paul Sabatier; 2018. Available from: http://www.theses.fr/2018TOU30128
10.
Rousselin, Thomas.
Modélisation et interprétation des effets combinés vieillissement/SEE dans les technologies d'échelles nanométriques appliquées au domaine avionique : Modelisation and analysis of the impact of the combined effects of aging and SEE for nano-scaled technologies in avionics.
Degree: Docteur es, Génie Electrique, 2018, Toulouse, ISAE
URL: http://www.theses.fr/2018ESAE0044
► L’électronique embarquée dans l’aéronautique, couramment appelé avionique, est chargée d’effectuer des tâches critiques et doit présenter une fiabilité élevée. La technologie Complementary Metal Oxyde Semiconductor…
(more)
▼ L’électronique embarquée dans l’aéronautique, couramment appelé avionique, est chargée d’effectuer des tâches critiques et doit présenter une fiabilité élevée. La technologie Complementary Metal Oxyde Semiconductor (CMOS) est couramment utilisée pour réaliser des composants critiques, comme des mémoires. Les composants CMOS sont susceptibles à deux types d’erreurs : les dégradations liées au vieillissement et les évènements singuliers causés par les particules cosmiques. Or, les conditions d’utilisation de l’avionique renforcent la fréquence d’occurrence de ces deux types d’erreurs. Le vieillissement consiste, pour les composants CMOS, en la dégradation de ses interfaces métal/oxyde et oxyde/semi-conducteur au cours de sa durée de vie. Les composants avioniques subissent un vieillissement accéléré de par leur condition d’utilisation intensive. Le rayonnement cosmique est composé de particules énergétiques d’origine extrasolaire. Certaines de ces particules sont susceptibles d’interagir un composant électronique et d’y déposer de l’énergie, cela peut causer une erreur appelée évènement singulier. L’avionique est particulièrement concernée par cette problématique car ces évènements peuvent être critiques et qu’elle rencontre un flux élevé de particules.Auparavant, la sensibilité aux radiations était considérée comme indépendante du vieillissement. Seulement, les évolutions des technologies CMOS nous amènent à remettre en cause cette hypothèse. Afin d’étudier ce nouveau phénomène, une méthode de modélisation a été développée. Celle-ci couple la modélisation des évènements singuliers à une modélisation électrique circuit du vieillissement. Elle permet d’effectuer des simulations sur un circuit mémoire spécifique dans des environnements radiatifs variés. De ces simulations ressortent l’influence de certains paramètres électriques, qui permettent de proposer une simulation opérationnelle appliquée à l’avionique.
CMOS technologies used in avionics are prone to both aging and soft error caused by cosmic rays. The ongoing technology scaling has improved the radiation sensitivity of memory cells while the contribution of degradations mechanisms remained unchanged. Considering this trend, the hypothesis that radiation sensitivity does not change over the lifetime of a component must be challenged. In order to do so, a modelling methodology is proposed. It is based on an existing radiation modelling device and includes an electrical aging modelling. This modelling is used to characterize the aging impact on radiation sensitivity of several memory cells under different radiative environment. The impact of diverse electrical parameters is noted and an operative avionics study is finally proposed.
Advisors/Committee Members: Hubert, Guillaume (thesis director).
Subjects/Keywords: Vieillissement; NBTI; SEE; FinFET; Avionique; Aging; NBTI; SEE; FinFET; Avionics
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APA ·
Chicago ·
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APA (6th Edition):
Rousselin, T. (2018). Modélisation et interprétation des effets combinés vieillissement/SEE dans les technologies d'échelles nanométriques appliquées au domaine avionique : Modelisation and analysis of the impact of the combined effects of aging and SEE for nano-scaled technologies in avionics. (Doctoral Dissertation). Toulouse, ISAE. Retrieved from http://www.theses.fr/2018ESAE0044
Chicago Manual of Style (16th Edition):
Rousselin, Thomas. “Modélisation et interprétation des effets combinés vieillissement/SEE dans les technologies d'échelles nanométriques appliquées au domaine avionique : Modelisation and analysis of the impact of the combined effects of aging and SEE for nano-scaled technologies in avionics.” 2018. Doctoral Dissertation, Toulouse, ISAE. Accessed January 17, 2021.
http://www.theses.fr/2018ESAE0044.
MLA Handbook (7th Edition):
Rousselin, Thomas. “Modélisation et interprétation des effets combinés vieillissement/SEE dans les technologies d'échelles nanométriques appliquées au domaine avionique : Modelisation and analysis of the impact of the combined effects of aging and SEE for nano-scaled technologies in avionics.” 2018. Web. 17 Jan 2021.
Vancouver:
Rousselin T. Modélisation et interprétation des effets combinés vieillissement/SEE dans les technologies d'échelles nanométriques appliquées au domaine avionique : Modelisation and analysis of the impact of the combined effects of aging and SEE for nano-scaled technologies in avionics. [Internet] [Doctoral dissertation]. Toulouse, ISAE; 2018. [cited 2021 Jan 17].
Available from: http://www.theses.fr/2018ESAE0044.
Council of Science Editors:
Rousselin T. Modélisation et interprétation des effets combinés vieillissement/SEE dans les technologies d'échelles nanométriques appliquées au domaine avionique : Modelisation and analysis of the impact of the combined effects of aging and SEE for nano-scaled technologies in avionics. [Doctoral Dissertation]. Toulouse, ISAE; 2018. Available from: http://www.theses.fr/2018ESAE0044
Cranfield University
11.
Aman Shah, Shahani.
System level airborne avionics prognostics for maintenance, repair and overhaul.
Degree: PhD, 2016, Cranfield University
URL: http://dspace.lib.cranfield.ac.uk/handle/1826/11844
► The aim of this study is to propose an alternative approach in prognostics for airborne avionics system in order to enhance maintenance process and aircraft…
(more)
▼ The aim of this study is to propose an alternative approach in prognostics for
airborne avionics system in order to enhance maintenance process and aircraft
availability. The objectives are to analyse the dependency of avionic systems
for fault propagation behaviour degradation, research and develop methods to
predict the remaining useful life of avionics Line Replaceable Units (LRU),
research and develop methods to evaluate and predict the degradation
performances of avionic systems, and lastly to develop software simulation
systems to evaluate methods developed.
One of the many stakeholders in the aircraft lifecycle includes the Maintenance,
Repair and Overhaul (MRO) industry. The predictable logistics process to some
degree as an outcome of IVHM gives benefit to the MRO industry.
In this thesis, a new integrated numerical methodology called ‘System Level
Airborne Avionic Prognostics’ or SLAAP is developed; looking at a top level
solution in prognostics. Overall, this research consists of two main elements.
One is to thoroughly understand and analyse data that could be utilised.
Secondly, is to apply the developed methodology using the enhanced
prognostic methodology.
Readily available fault tree data is used to analyse the dependencies of each
component within the LRUs, and performance were simulated using the linear
Markov Model to estimate the time to failure. A hybrid approach prognostics
model is then integrated with the prognostics measures that include
environmental factors that contribute to the failure of a system, such as
temperature. This research attempts to use data that is closest to the data
available in the maintenance repair and overhaul industry.
Based on a case study on Enhanced Ground Proximity Warning System
(EGPWS), the prognostics methodology developed showed a sufficiently close
approximation to the Mean Time Before Failure (MTBF) data supplied by the Original Equipment Manufacturer (OEM). This validation gives confidence that
the proposed methodology will achieve its objectives and it should be further
developed for use in the systems design process.
Subjects/Keywords: Aircraft maintenance; Prognostics in avionics; Enhanced ground proximity warning system
Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
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Manager
APA (6th Edition):
Aman Shah, S. (2016). System level airborne avionics prognostics for maintenance, repair and overhaul. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/11844
Chicago Manual of Style (16th Edition):
Aman Shah, Shahani. “System level airborne avionics prognostics for maintenance, repair and overhaul.” 2016. Doctoral Dissertation, Cranfield University. Accessed January 17, 2021.
http://dspace.lib.cranfield.ac.uk/handle/1826/11844.
MLA Handbook (7th Edition):
Aman Shah, Shahani. “System level airborne avionics prognostics for maintenance, repair and overhaul.” 2016. Web. 17 Jan 2021.
Vancouver:
Aman Shah S. System level airborne avionics prognostics for maintenance, repair and overhaul. [Internet] [Doctoral dissertation]. Cranfield University; 2016. [cited 2021 Jan 17].
Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/11844.
Council of Science Editors:
Aman Shah S. System level airborne avionics prognostics for maintenance, repair and overhaul. [Doctoral Dissertation]. Cranfield University; 2016. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/11844
Cranfield University
12.
Gia, M. C.
Design of data structures for terrain reference navigation.
Degree: PhD, 1994, Cranfield University
URL: http://dspace.lib.cranfield.ac.uk/handle/1826/4184
;
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260171
► This thesis describes the design of a data structure for use with Digitised Terrain Elevation Data (DTED) in Terrain Reference Navigation (TRN) systems. The data…
(more)
▼ This thesis describes the design of a data structure for use with Digitised Terrain Elevation Data (DTED) in Terrain Reference Navigation (TRN) systems. The data structure is based on a variant of quad-tree and oct-tree data structures to provide an efficient representation of terrain in terms of storage requirements and acccss operations. These data structure are applied to flight path planning operations in mission management applications. The algorithms developed for flight path planning have becri implemented in the C programming language for a standard PC. Current research in TRN systems is reviewed and attention is given to the use of hierarchical data structures to cope with the potentially large data base needed for DTED files. Data structure combining quad-trees and oct-trees are developed with an emphasis on data reduction using pointerless trees and the use of locational codes to provide straightforward mapping between quad-trees and oct-trees, in other words, between two-dimensional co-ordinates and three-dimensional co-ordinates. Analysis of these algorithms is described for two DTED files to illustrate storage improvements and to verify a set of database access operations. These data structures are applied to problems of flight path planning where the navigation space comprises objects above a specific altitude and this three-dimensional space is searched for a flight path which avoids the obstacles and satisfies specific operational criteria. Algorithms are developed to extract a visibility graph from the terrain database and to determine the preferred flight path from a set of paths which satisfy defined constraints. Several search techniques are developed which exploit the efficiency of the quad-tree and oct-tree data structures. These methods are extended to real-time flight-path planning where predicted times for access operations are used to direct flight path extraction by varying the tree resolution during computation of the flight path. A comprehensive set of results are provided to illustrate: the storage efficiency of quad-tree and oct-tree data structures the application of pyramid structures to represent navigation space analysis of the time to compute the visibility graph and to extract flight paths integration of these methods with a real-time mission management simulation on a PC The thesis draws conclusions on the efficiency of these techniques for the represcntation of DTEDs and to access objects in TRN systems. It is observed that the use of hierarchical data structures in the form of quad-trees and oct-trees offers significant improvement in accessing DTEDS, for future use in TRN systems. The thesis concludes by outlining areas of further work where the techniques can be further &N, cloped for applications in mission management and navigation using DTED files.
Subjects/Keywords: 629.135; Avionics; Flight path planning
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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APA (6th Edition):
Gia, M. C. (1994). Design of data structures for terrain reference navigation. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/4184 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260171
Chicago Manual of Style (16th Edition):
Gia, M C. “Design of data structures for terrain reference navigation.” 1994. Doctoral Dissertation, Cranfield University. Accessed January 17, 2021.
http://dspace.lib.cranfield.ac.uk/handle/1826/4184 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260171.
MLA Handbook (7th Edition):
Gia, M C. “Design of data structures for terrain reference navigation.” 1994. Web. 17 Jan 2021.
Vancouver:
Gia MC. Design of data structures for terrain reference navigation. [Internet] [Doctoral dissertation]. Cranfield University; 1994. [cited 2021 Jan 17].
Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/4184 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260171.
Council of Science Editors:
Gia MC. Design of data structures for terrain reference navigation. [Doctoral Dissertation]. Cranfield University; 1994. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/4184 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260171
Cranfield University
13.
Aman Shah, Shahani.
System level airborne avionics prognostics for maintenance, repair and overhaul.
Degree: PhD, 2016, Cranfield University
URL: http://dspace.lib.cranfield.ac.uk/handle/1826/11844
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.716155
► The aim of this study is to propose an alternative approach in prognostics for airborne avionics system in order to enhance maintenance process and aircraft…
(more)
▼ The aim of this study is to propose an alternative approach in prognostics for airborne avionics system in order to enhance maintenance process and aircraft availability. The objectives are to analyse the dependency of avionic systems for fault propagation behaviour degradation, research and develop methods to predict the remaining useful life of avionics Line Replaceable Units (LRU), research and develop methods to evaluate and predict the degradation performances of avionic systems, and lastly to develop software simulation systems to evaluate methods developed. One of the many stakeholders in the aircraft lifecycle includes the Maintenance, Repair and Overhaul (MRO) industry. The predictable logistics process to some degree as an outcome of IVHM gives benefit to the MRO industry. In this thesis, a new integrated numerical methodology called ‘System Level Airborne Avionic Prognostics’ or SLAAP is developed; looking at a top level solution in prognostics. Overall, this research consists of two main elements. One is to thoroughly understand and analyse data that could be utilised. Secondly, is to apply the developed methodology using the enhanced prognostic methodology. Readily available fault tree data is used to analyse the dependencies of each component within the LRUs, and performance were simulated using the linear Markov Model to estimate the time to failure. A hybrid approach prognostics model is then integrated with the prognostics measures that include environmental factors that contribute to the failure of a system, such as temperature. This research attempts to use data that is closest to the data available in the maintenance repair and overhaul industry. Based on a case study on Enhanced Ground Proximity Warning System (EGPWS), the prognostics methodology developed showed a sufficiently close approximation to the Mean Time Before Failure (MTBF) data supplied by the Original Equipment Manufacturer (OEM). This validation gives confidence that the proposed methodology will achieve its objectives and it should be further developed for use in the systems design process.
Subjects/Keywords: 629.135; Aircraft maintenance; Prognostics in avionics; Enhanced ground proximity warning system
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Aman Shah, S. (2016). System level airborne avionics prognostics for maintenance, repair and overhaul. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/11844 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.716155
Chicago Manual of Style (16th Edition):
Aman Shah, Shahani. “System level airborne avionics prognostics for maintenance, repair and overhaul.” 2016. Doctoral Dissertation, Cranfield University. Accessed January 17, 2021.
http://dspace.lib.cranfield.ac.uk/handle/1826/11844 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.716155.
MLA Handbook (7th Edition):
Aman Shah, Shahani. “System level airborne avionics prognostics for maintenance, repair and overhaul.” 2016. Web. 17 Jan 2021.
Vancouver:
Aman Shah S. System level airborne avionics prognostics for maintenance, repair and overhaul. [Internet] [Doctoral dissertation]. Cranfield University; 2016. [cited 2021 Jan 17].
Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/11844 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.716155.
Council of Science Editors:
Aman Shah S. System level airborne avionics prognostics for maintenance, repair and overhaul. [Doctoral Dissertation]. Cranfield University; 2016. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/11844 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.716155
14.
Boberg, Jessika.
A comparison of sequencing formulations in a constraint generation procedure for avionics scheduling.
Degree: Faculty of Science & Engineering, 2017, Linköping UniversityLinköping University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-143274
► This thesis compares different mixed integer programming (MIP) formulations for sequencing of tasks in the context of avionics scheduling. Sequencing is a key concern…
(more)
▼ This thesis compares different mixed integer programming (MIP) formulations for sequencing of tasks in the context of avionics scheduling. Sequencing is a key concern in many discrete optimisation problems, and there are numerous ways of accomplishing sequencing with different MIP formulations. A scheduling tool for avionic systems has previously been developed in a collaboration between Saab and Linköping University. This tool includes a MIP formulation of the scheduling problem where one of the model components has the purpose to sequence tasks. In this thesis, this sequencing component is replaced with other MIP formulations in order to study whether the computational performance of the scheduling tool can be improved. Different scheduling instances and objective functions have been used when performing the tests aiming to evaluate the performances, with the computational times of the entire avionic scheduling model determining the success of the different MIP formulations for sequencing. The results show that the choice of MIP formulation makes a considerable impact on the computational performance and that a significant improvement can be achieved by choosing the most suitable one.
Subjects/Keywords: Scheduling; avionics scheduling; multiprocessor scheduling; mixed integer programming; Mathematics; Matematik
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Record Details
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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APA (6th Edition):
Boberg, J. (2017). A comparison of sequencing formulations in a constraint generation procedure for avionics scheduling. (Thesis). Linköping UniversityLinköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-143274
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Boberg, Jessika. “A comparison of sequencing formulations in a constraint generation procedure for avionics scheduling.” 2017. Thesis, Linköping UniversityLinköping University. Accessed January 17, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-143274.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Boberg, Jessika. “A comparison of sequencing formulations in a constraint generation procedure for avionics scheduling.” 2017. Web. 17 Jan 2021.
Vancouver:
Boberg J. A comparison of sequencing formulations in a constraint generation procedure for avionics scheduling. [Internet] [Thesis]. Linköping UniversityLinköping University; 2017. [cited 2021 Jan 17].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-143274.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Boberg J. A comparison of sequencing formulations in a constraint generation procedure for avionics scheduling. [Thesis]. Linköping UniversityLinköping University; 2017. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-143274
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
15.
Bach Quoc, Thang.
Přesné přiblížení na přistání GNSS CAT II/III: GNSS Precision Approach and Landing CAT II/III.
Degree: 2019, Brno University of Technology
URL: http://hdl.handle.net/11012/24725
► The content of this work is an overview of precision approach used by GNSS and avionics for operation in low visibility conditions. This thesis describes…
(more)
▼ The content of this work is an overview of precision approach used by GNSS and
avionics for operation in low visibility conditions. This thesis describes existing requirements and proposals for new standards that are important to define GBAS performance. The objective of this work is to compare the alternative systems to guide aircraft during precision approach CAT II/III. GBAS operational implementation is additionally devised in this thesis.
Advisors/Committee Members: Ptáček, Pavel (advisor), Vosecký, Slavomír (referee).
Subjects/Keywords: GNSS; GBAS; přesné přiblížení; avionika; GNSS; GBAS; precision approach; avionics
Record Details
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bach Quoc, T. (2019). Přesné přiblížení na přistání GNSS CAT II/III: GNSS Precision Approach and Landing CAT II/III. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/24725
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bach Quoc, Thang. “Přesné přiblížení na přistání GNSS CAT II/III: GNSS Precision Approach and Landing CAT II/III.” 2019. Thesis, Brno University of Technology. Accessed January 17, 2021.
http://hdl.handle.net/11012/24725.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bach Quoc, Thang. “Přesné přiblížení na přistání GNSS CAT II/III: GNSS Precision Approach and Landing CAT II/III.” 2019. Web. 17 Jan 2021.
Vancouver:
Bach Quoc T. Přesné přiblížení na přistání GNSS CAT II/III: GNSS Precision Approach and Landing CAT II/III. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/11012/24725.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bach Quoc T. Přesné přiblížení na přistání GNSS CAT II/III: GNSS Precision Approach and Landing CAT II/III. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/24725
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Delft University of Technology
16.
Van Kampenhout, J.R. (author).
Deterministic Task Transfer in Network-on-Chip Based Multi-Core Processors.
Degree: 2011, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:6fe3398b-a45e-431c-876f-7e778885c454
► In this thesis we consider the application of multi-cores in safety critical real-time systems, especially avionics. In our literature study we extract two major challenges.…
(more)
▼ In this thesis we consider the application of multi-cores in safety critical real-time systems, especially avionics. In our literature study we extract two major challenges. Firstly the unpredictability that comes from the concurrent access of shared resources (especially the on-chip interconnect) must be dealt with. To address this we propose to extend the concept of partitioning which provides fault containment, in combination with resource reservation at design time. The second challenge is to optimize the hardware usage without compromising on the determinism inherent to static mapping and scheduling. We propose mode-based mapping to deal with this, which allows to switch between multiple static schemes. We capture these concepts in a simple formal model. Mode-based mapping is enabled by task migration. The transfer time of tasks must be bounded, which requires guarantees on the Quality-of-Service (QoS) offered by the interconnect. Modern multi-cores feature Networks-on-Chip (NoC), which are packet-switching interconnects consisting of links and routers. Key to deterministic behaviour of NoCs this is avoiding contention, this can be achieved with flow control and buffering strategies based on resource reservation. We propose the use of transient modes to control the changes between the different modes in a NoC. To evaluate different transfer methods we conducted a number of experiments on a 64-core processor that features a NoC. The experiments show that both data prefetching from the shared cache and the programmer accessible networks are suitable for deterministic task transfer. The former is twice as fast but the number and size of shared data objects must be limited because timing analysis of large coherent shared caches is not feasible. For all methods the maximum deviation from the mean values is constant (0,4 us), and the standard deviation is under 1/2 % of the total transfer time. This shows that these methods are deterministic and that a tight bound on the transfer time can be determined. We conclude that private caches and scratchpads are suitable memory architectures for real-time systems, which can be supported by message passing and explicit communication through small shared memory regions. Mapping traffic at design time avoids contention, and isolation of traffic at the transfer level offers additional fault-tolerance. We propose a number of improvements for the transfer methods considered in our experiments that will enable guarantees on QoS. Our experiments confirm the feasibility of the proposed concepts.
Computer Engineering Research Group
Software Technology
Electrical Engineering, Mathematics and Computer Science
Advisors/Committee Members: Al-Ars, Z. (mentor).
Subjects/Keywords: task migration; Networks-on-Chip; real-time; multi-core; avionics
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APA (6th Edition):
Van Kampenhout, J. R. (. (2011). Deterministic Task Transfer in Network-on-Chip Based Multi-Core Processors. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:6fe3398b-a45e-431c-876f-7e778885c454
Chicago Manual of Style (16th Edition):
Van Kampenhout, J R (author). “Deterministic Task Transfer in Network-on-Chip Based Multi-Core Processors.” 2011. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:6fe3398b-a45e-431c-876f-7e778885c454.
MLA Handbook (7th Edition):
Van Kampenhout, J R (author). “Deterministic Task Transfer in Network-on-Chip Based Multi-Core Processors.” 2011. Web. 17 Jan 2021.
Vancouver:
Van Kampenhout JR(. Deterministic Task Transfer in Network-on-Chip Based Multi-Core Processors. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:6fe3398b-a45e-431c-876f-7e778885c454.
Council of Science Editors:
Van Kampenhout JR(. Deterministic Task Transfer in Network-on-Chip Based Multi-Core Processors. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:6fe3398b-a45e-431c-876f-7e778885c454
Delft University of Technology
17.
Rijndorp, A.D.T. (author).
Aviate, Navigate: Functional Visualizations of Asymmetric Flight Envelope Limits.
Degree: 2016, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:7656ca5b-8904-4551-9fde-dcf92573c6d3
► Current aircraft flight deck interfaces do not provide information on how a performance-altering failure constrains the aircraft's flight envelope. As a result, it is difficult…
(more)
▼ Current aircraft flight deck interfaces do not provide information on how a performance-altering failure constrains the aircraft's flight envelope. As a result, it is difficult for flight crews to plan an emergency landing trajectory. This study presents the results of the conceptual development of novel constraint-based interface symbology that aims to solve this issue. As no fully functional on-line flight envelope prediction system implementations currently exist, a simplified dynamical model with an asymmetric flight envelope was developed to overcome this limitation. The proposed interface symbology integrates with the existing primary flight display and navigation display. A human-in-the-loop experiment was conducted to validate the effectiveness of the used symbology. The results lend credibility to the belief that presenting flight envelope constraints in terms of reachable navigation states may improve short-term tactical planning and reduce the pilot's mental workload during emergency situations.
Aerospace Engineering
Control & Operations
Advisors/Committee Members: Borst, C. (mentor).
Subjects/Keywords: navigation; cognitive systems engineering; interface design; avionics; decision making; flight envelope
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APA (6th Edition):
Rijndorp, A. D. T. (. (2016). Aviate, Navigate: Functional Visualizations of Asymmetric Flight Envelope Limits. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7656ca5b-8904-4551-9fde-dcf92573c6d3
Chicago Manual of Style (16th Edition):
Rijndorp, A D T (author). “Aviate, Navigate: Functional Visualizations of Asymmetric Flight Envelope Limits.” 2016. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:7656ca5b-8904-4551-9fde-dcf92573c6d3.
MLA Handbook (7th Edition):
Rijndorp, A D T (author). “Aviate, Navigate: Functional Visualizations of Asymmetric Flight Envelope Limits.” 2016. Web. 17 Jan 2021.
Vancouver:
Rijndorp ADT(. Aviate, Navigate: Functional Visualizations of Asymmetric Flight Envelope Limits. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:7656ca5b-8904-4551-9fde-dcf92573c6d3.
Council of Science Editors:
Rijndorp ADT(. Aviate, Navigate: Functional Visualizations of Asymmetric Flight Envelope Limits. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:7656ca5b-8904-4551-9fde-dcf92573c6d3
18.
Brison, Mickael.
Réseau de communication courant porteur en ligne pour la collecte d'informations et le diagbostic d'équipements embarqués dans l'aéronef : Power line communication applied for the collection of informations and equipment diagnosis on an aircraft.
Degree: Docteur es, Génie électrique, 2018, Université Paris-Saclay (ComUE)
URL: http://www.theses.fr/2018SACLC042
► Ces travaux portent sur la faisabilité de l'établissement d'un réseau Courant Porteur de Ligne (CPL) pour transmettre des données de maintenance prédictive dans le domaine…
(more)
▼ Ces travaux portent sur la faisabilité de l'établissement d'un réseau Courant Porteur de Ligne (CPL) pour transmettre des données de maintenance prédictive dans le domaine aéronautique. Le CPL est identifié comme solution afin d'augmenter le nombre d'informations échangées sans modifications du câblage déjà présent dans l'avion. L'approche adoptée au cours de cette thèse porte sur l'adaptation des solutions CPL existantes sur le marché afin qu'elles puissent être déployées sur un réseau avionique classique. Ces modifications doivent respecter les normes aéronautiques qui intègrent notamment sur la protection foudre (DO-160) et les mécanismes de couplage pour assurer la liaison de communication sur les lignes de puissance. Des expérimentations ont été réalisées pour vérifier les performances que les solutions CPLs pourraient attendre en utilisant le ratio signal sur bruit (SNR) comme paramètre de comparaison.Un montage permettant de respecter à la fois la contrainte de protection à la foudre et le fonctionnement des transmissions CPM a été identifié et évalué par le biais de simulations et d’expérimentations en laboratoire. Ce montage nous a permis d'augmenter le SNR de la liaison CPL jusqu'à 40dB. Les circuits de couplage présents sur les modems CPL du commerce ont été optimisés afin de mieux s'adapter à l'environnement aéronautique. La conception de ces circuits sont complètement décrites, dont notamment la réalisation du transformateur HF permettant l'adaptation d'impédance. Une fois les modifications effectuées, nous avons réalisé une série de mesures d’émissions conduites générées les chipsets afin de vérifier leur conformité aux normes CEM DO-160. Les tests ont porté sur des modems classiques et des modems modifiés liés à un équipement classique avionique. Ces tests nous ont montré que, sans les modifications proposées au niveau du circuit de couplage, il est impossible de communiquer sur des lignes fortement bruitées. Dans le cas de bruits générés à la limite de la norme DO-160, notre modem modifié atteint un débit de 46 Mbps en émission et 36 Mbps en réception. Dans cette dernière manipulation, nous atteignons dans un pire cas de perturbations un débit supérieur à celui de notre cahier des charges.
This work focuses on the feasibility of a Power Line Communication (PLC) network for transmitting predictive maintenance data on avionics power lines. PLC is identified as a solution to increase the number of information exchanged without modification of the wiring already present in the aircraft. The approach taken in this thesis deals with the adaptation of existing PLC solutions on the market so that they can be deployed on a conventional avionics network. These modifications include lightning protection and coupling circuits to ensure the communication over the power network. Experiments were conducted to verify the performance that PLC solutions could expect by using the signal-to-noise ratio (SNR) as a comparison paramater.A circuit allowing to respect lightning protection constraints and that allow PLC…
Advisors/Committee Members: Bensetti, Mohamed (thesis director).
Subjects/Keywords: Courant porteur en ligne; Aéronautique; Cem; Power line communication; Avionics; Emc
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APA ·
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Manager
APA (6th Edition):
Brison, M. (2018). Réseau de communication courant porteur en ligne pour la collecte d'informations et le diagbostic d'équipements embarqués dans l'aéronef : Power line communication applied for the collection of informations and equipment diagnosis on an aircraft. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2018SACLC042
Chicago Manual of Style (16th Edition):
Brison, Mickael. “Réseau de communication courant porteur en ligne pour la collecte d'informations et le diagbostic d'équipements embarqués dans l'aéronef : Power line communication applied for the collection of informations and equipment diagnosis on an aircraft.” 2018. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed January 17, 2021.
http://www.theses.fr/2018SACLC042.
MLA Handbook (7th Edition):
Brison, Mickael. “Réseau de communication courant porteur en ligne pour la collecte d'informations et le diagbostic d'équipements embarqués dans l'aéronef : Power line communication applied for the collection of informations and equipment diagnosis on an aircraft.” 2018. Web. 17 Jan 2021.
Vancouver:
Brison M. Réseau de communication courant porteur en ligne pour la collecte d'informations et le diagbostic d'équipements embarqués dans l'aéronef : Power line communication applied for the collection of informations and equipment diagnosis on an aircraft. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2018. [cited 2021 Jan 17].
Available from: http://www.theses.fr/2018SACLC042.
Council of Science Editors:
Brison M. Réseau de communication courant porteur en ligne pour la collecte d'informations et le diagbostic d'équipements embarqués dans l'aéronef : Power line communication applied for the collection of informations and equipment diagnosis on an aircraft. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2018. Available from: http://www.theses.fr/2018SACLC042
Cal Poly
19.
Berrian, Joshua.
AN AUTOMATED TEST STATION DESIGN USED TO VERIFY AIRCRAFT COMMUNICATION PROTOCOLS.
Degree: MS, Aerospace Engineering, 2011, Cal Poly
URL: https://digitalcommons.calpoly.edu/theses/635
;
10.15368/theses.2011.192
► Requirements verification is typically the costliest part of the systems engineering design process. In the commercial aircraft industry, as the software and hardware design…
(more)
▼
Requirements verification is typically the costliest part of the systems engineering design process. In the commercial aircraft industry, as the software and hardware design evolves, it must be verified to conform to requirements. In addition, when new design releases are made, regression analysis must be performed which usually requires repeat testing. To streamline verification, a suite of automated verification tools is described in this document which can reduce the test effort. This test suite can be qualified to be used to verify systems at any DO-178B design assurance level. Some of the software tools are briefly described below.
There are major advantages of this automated verification effort. The tools can either be internally developed by a company or purchased "off the shelf", depending upon budget and staff constraints. Every automated test case can be run with the click of a button and failures caused by human factors are reduced. The station can be qualified per DO-178B guidelines, and can also be expanded to support ARINC 429, AFDX, Ethernet, and MIL-STD-1553 interfaces. The expansion of these test programs would enable the creation of a universal
avionics test suite with minimal cost and a reduction of the overall program verification effort.
The following is a presentation of an automated test station capable of reducing verification time and cost. The hardware and software aspects needed to create the test station are examined. Also, steps are provided to help guide a designer through the tool qualification process. Lastly, a full suite of test functions are included that can be implemented and customized to verify a wide range of
avionics communication characteristics.
Advisors/Committee Members: David D. Marshall, Ph.D..
Subjects/Keywords: Automation; Verification; Avionics; Communication; Systems Engineering and Multidisciplinary Design Optimization
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APA (6th Edition):
Berrian, J. (2011). AN AUTOMATED TEST STATION DESIGN USED TO VERIFY AIRCRAFT COMMUNICATION PROTOCOLS. (Masters Thesis). Cal Poly. Retrieved from https://digitalcommons.calpoly.edu/theses/635 ; 10.15368/theses.2011.192
Chicago Manual of Style (16th Edition):
Berrian, Joshua. “AN AUTOMATED TEST STATION DESIGN USED TO VERIFY AIRCRAFT COMMUNICATION PROTOCOLS.” 2011. Masters Thesis, Cal Poly. Accessed January 17, 2021.
https://digitalcommons.calpoly.edu/theses/635 ; 10.15368/theses.2011.192.
MLA Handbook (7th Edition):
Berrian, Joshua. “AN AUTOMATED TEST STATION DESIGN USED TO VERIFY AIRCRAFT COMMUNICATION PROTOCOLS.” 2011. Web. 17 Jan 2021.
Vancouver:
Berrian J. AN AUTOMATED TEST STATION DESIGN USED TO VERIFY AIRCRAFT COMMUNICATION PROTOCOLS. [Internet] [Masters thesis]. Cal Poly; 2011. [cited 2021 Jan 17].
Available from: https://digitalcommons.calpoly.edu/theses/635 ; 10.15368/theses.2011.192.
Council of Science Editors:
Berrian J. AN AUTOMATED TEST STATION DESIGN USED TO VERIFY AIRCRAFT COMMUNICATION PROTOCOLS. [Masters Thesis]. Cal Poly; 2011. Available from: https://digitalcommons.calpoly.edu/theses/635 ; 10.15368/theses.2011.192
Loughborough University
20.
Hubbard, Peter D.
Fault management via dynamic reconfiguration for integrated modular avionics.
Degree: PhD, 2015, Loughborough University
URL: http://hdl.handle.net/2134/20957
► The purpose of this research is to investigate fault management methodologies within Integrated Modular Avionics (IMA) systems, and develop techniques by which the use of…
(more)
▼ The purpose of this research is to investigate fault management methodologies within Integrated Modular Avionics (IMA) systems, and develop techniques by which the use of dynamic reconfiguration can be implemented to restore higher levels of systems redundancy in the event of a systems fault. A proposed concept of dynamic configuration has been implemented on a test facility that allows controlled injection of common faults to a representative IMA system. This facility allows not only the observation of the response of the system management activities to manage the fault, but also analysis of real time data across the network to ensure distributed control activities are maintained. IMS technologies have evolved as a feasible direction for the next generation of avionic systems. Although federated systems are logical to design, certify and implement, they have some inherent limitations that are not cost beneficial to the customer over long life-cycles of complex systems, and hence the fundamental modular design, i.e. common processors running modular software functions, provides a flexibility in terms of configuration, implementation and upgradability that cannot be matched by well-established federated avionic system architectures. For example, rapid advances of computing technology means that dedicated hardware can become outmoded by component obsolescence which almost inevitably makes replacements unavailable during normal life-cycles of most avionic systems. To replace the obsolete part with a newer design involves a costly re-design and re-certification of any relevant or interacting functions with this unit. As such, aircraft are often known to go through expensive mid-life updates to upgrade all avionics systems. In contrast, a higher frequency of small capability upgrades would maximise the product performance, including cost of development and procurement, in constantly changing platform deployment environments. IMA is by no means a new concept and work has been carried out globally in order to mature the capability. There are even examples where this technology has been implemented as subsystems on service aircraft. However, IMA flexible configuration properties are yet to be exploited to their full extent; it is feasible that identification of faults or failures within the system would lead to the exploitation of these properties in order to dynamically reconfigure and maintain high levels of redundancy in the event of component failure. It is also conceivable to install redundant components such that an IMS can go through a process of graceful degradation, whereby the system accommodates a number of active failures, but can still maintain appropriate levels of reliability and service. This property extends the average maintenance-free operating period, ensuring that the platform has considerably less unscheduled down time and therefore increased availability. The content of this research work involved a number of key activities in order to investigate the feasibility of the issues outlined above. The first…
Subjects/Keywords: 629.135; IMA; Avionics; Fault management; Distributed control; Dynamic reconfiguration
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APA ·
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APA (6th Edition):
Hubbard, P. D. (2015). Fault management via dynamic reconfiguration for integrated modular avionics. (Doctoral Dissertation). Loughborough University. Retrieved from http://hdl.handle.net/2134/20957
Chicago Manual of Style (16th Edition):
Hubbard, Peter D. “Fault management via dynamic reconfiguration for integrated modular avionics.” 2015. Doctoral Dissertation, Loughborough University. Accessed January 17, 2021.
http://hdl.handle.net/2134/20957.
MLA Handbook (7th Edition):
Hubbard, Peter D. “Fault management via dynamic reconfiguration for integrated modular avionics.” 2015. Web. 17 Jan 2021.
Vancouver:
Hubbard PD. Fault management via dynamic reconfiguration for integrated modular avionics. [Internet] [Doctoral dissertation]. Loughborough University; 2015. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/2134/20957.
Council of Science Editors:
Hubbard PD. Fault management via dynamic reconfiguration for integrated modular avionics. [Doctoral Dissertation]. Loughborough University; 2015. Available from: http://hdl.handle.net/2134/20957
University of Missouri – Columbia
21.
Kontras, Evan A.
A magnetic fluid based thermal connector for avionics chassis.
Degree: 2013, University of Missouri – Columbia
URL: http://hdl.handle.net/10355/38538
► [ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The University of Missouri, Columbia, has participated in the DARPA/ONR sponsored RevCon Challenge to demonstrate…
(more)
▼ [ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The University of Missouri, Columbia, has participated in the DARPA/ONR sponsored RevCon Challenge to demonstrate an innovative field reversible thermal connector to replace the current industry standard wedgelock for edge cooled electronics. Wedgelocks mechanically secure edge cooled electronics cards to a cooling block, but having a dry interface and little contact surface area leads to poor heat transfer from the card to the cooling block. Seeking marked improvement in thermal performance, a novel thermal connector has been developed utilizing a magnetorheological (MR) fluid. The MR fluid provides a liquid interface for vastly improved heat transfer. Also, utilizing an applied magnetic field the fluid shear stress can be increased causing complete mechanical restraint of the electronics card while providing vibration damping. The initial University of Missouri RevCon design is discussed, and its evolution into the current MR fluid thermal connector is presented. The unique heat transfer characteristics of the selected MR fluid are presented, including the controllable variation of fluid thermal conductivity with an applied magnetic field. Thermal performance has been simulated, evaluated experimentally, and compared directly to the industry standard wedgelock. Also, the MR fluid interface has been investigated as a means to provide vibration damping for the electronics card, and damping characteristics are discussed.
Advisors/Committee Members: Chen, Chung-Lung (advisor).
Subjects/Keywords: magnetorheological; avionics chassis; wedgelock; ferrofluid; edge cooled electronics
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APA (6th Edition):
Kontras, E. A. (2013). A magnetic fluid based thermal connector for avionics chassis. (Thesis). University of Missouri – Columbia. Retrieved from http://hdl.handle.net/10355/38538
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kontras, Evan A. “A magnetic fluid based thermal connector for avionics chassis.” 2013. Thesis, University of Missouri – Columbia. Accessed January 17, 2021.
http://hdl.handle.net/10355/38538.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kontras, Evan A. “A magnetic fluid based thermal connector for avionics chassis.” 2013. Web. 17 Jan 2021.
Vancouver:
Kontras EA. A magnetic fluid based thermal connector for avionics chassis. [Internet] [Thesis]. University of Missouri – Columbia; 2013. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10355/38538.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kontras EA. A magnetic fluid based thermal connector for avionics chassis. [Thesis]. University of Missouri – Columbia; 2013. Available from: http://hdl.handle.net/10355/38538
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
22.
Larhzaoui, Thomas.
Fiabilisation de la technologie courant porteur en ligne en vue de piloter des actionneurs d’aéronefs : Reliability of the power line technology in rder to drive aircraft actuators.
Degree: Docteur es, Electronique et télécommunications, 2014, Rennes, INSA
URL: http://www.theses.fr/2014ISAR0009
► Dans le cadre de l’avion plus électrique, les avionneurs cherchent à remplacer les commandes de vol hydrauliques par des commandes de vol électriques, avec pour…
(more)
▼ Dans le cadre de l’avion plus électrique, les avionneurs cherchent à remplacer les commandes de vol hydrauliques par des commandes de vol électriques, avec pour intérêt de diminuer le poids, et d’améliorer la flexibilité des équipements aéronautiques. Sachant que sur un A380, la distance cumulée pour les câbles peut atteindre plus de 500 km, la solution consistant à faire cohabiter les transmissions de données et de puissances au sein de mêmes câbles grâce à la technologie CPL pourrait contribuer à réduire la masse de câble dans un avion. Cependant les câbles de puissance n’ont pas été dimensionnés pour transmettre un signal informationnel, et les équipements présents sur le réseau sont source de bruits. Dans ce contexte nous souhaitons montrer la faisabilité d’une transmission CPL soumise aux contraintes avioniques tout en respectant les normes aéronautiques. La première partie des travaux a consisté à mesurer le canal de propagation sur un banc de test représentatif d’un environnement aéronautique. Le canal de propagation est composé de deux coupleurs de type inductif ou capacitif dont le but est de connecter les câbles de télécommunication au réseau de puissance et d’une paire bifilaire torsadée de puissance d’une longueur de 32 m représentative d’un réseau HVDC ±270 V. Nous avons alors testé trois architectures différentes : l’architecture point-À-Point avec coupleur capacitif, l’architecture point-À-Point avec coupleur inductif et l’architecture point-À-Multipoints avec coupleur inductif. Le but de ces mesures a été d’évaluer la fonction de transfert du canal sur la bande [1 ; 100] MHz. Nous avons alors calculé les éléments caractéristiques du canal comme la bande de cohérence et l’étalement des retards. Après la caractérisation du canal de propagation, nous avons choisi et dimensionné les algorithmes de traitement du signal au regard des spécifications aéronautiques à savoir : un débit utile de 10 Mbit/s, un temps de latence de 167-334 μs, un TEB de 10-12 et le respect du gabarit de la DO-160 en émission conduite. Au regard de la fonction de transfert du canal, nous avons choisi d’utiliser l’OFDM comme technique de transmission. Ainsi, à l’aide de la caractérisation du canal de propagation nous avons au cours d’une étude paramétrique défini les paramètres de la transmission OFDM au regard des spécifications de débit et de temps réel. Dans un second temps, nous avons implanté les paramètres OFDM ainsi que la modélisation du canal de propagation dans une chaine de transmission Matlab. Cette chaine nous a alors permis de vérifier les paramètres issues de l’étude paramétrique ainsi que de définir le système de codage de canal (Reed-Solomon et code convolutif) pour respecter les spécifications aéronautiques. La dernière partie de cette thèse a consisté en l’étude du système de synchronisation. Du fait de la stabilité du canal de propagation, nous avons considéré une synchronisation fine du système lors d’une phase d’initialisation puis nous nous somme focalisé sur le dimensionnement d’un système de suivi dans le but…
Advisors/Committee Members: Uzel-Nouvel, Fabienne (thesis director).
Subjects/Keywords: Code convolutif; Code Reed-Solomon; Avionics; Electric lines – Carrier transmission; Orthogonal frequency division multiplexing; 621.382
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APA ·
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APA (6th Edition):
Larhzaoui, T. (2014). Fiabilisation de la technologie courant porteur en ligne en vue de piloter des actionneurs d’aéronefs : Reliability of the power line technology in rder to drive aircraft actuators. (Doctoral Dissertation). Rennes, INSA. Retrieved from http://www.theses.fr/2014ISAR0009
Chicago Manual of Style (16th Edition):
Larhzaoui, Thomas. “Fiabilisation de la technologie courant porteur en ligne en vue de piloter des actionneurs d’aéronefs : Reliability of the power line technology in rder to drive aircraft actuators.” 2014. Doctoral Dissertation, Rennes, INSA. Accessed January 17, 2021.
http://www.theses.fr/2014ISAR0009.
MLA Handbook (7th Edition):
Larhzaoui, Thomas. “Fiabilisation de la technologie courant porteur en ligne en vue de piloter des actionneurs d’aéronefs : Reliability of the power line technology in rder to drive aircraft actuators.” 2014. Web. 17 Jan 2021.
Vancouver:
Larhzaoui T. Fiabilisation de la technologie courant porteur en ligne en vue de piloter des actionneurs d’aéronefs : Reliability of the power line technology in rder to drive aircraft actuators. [Internet] [Doctoral dissertation]. Rennes, INSA; 2014. [cited 2021 Jan 17].
Available from: http://www.theses.fr/2014ISAR0009.
Council of Science Editors:
Larhzaoui T. Fiabilisation de la technologie courant porteur en ligne en vue de piloter des actionneurs d’aéronefs : Reliability of the power line technology in rder to drive aircraft actuators. [Doctoral Dissertation]. Rennes, INSA; 2014. Available from: http://www.theses.fr/2014ISAR0009
INP Toulouse
23.
Asselin, Eric.
Système de détection d'intrusion adapté au système de communication aéronautique ACARS : Intrusion detection system for ACARS communications.
Degree: Docteur es, Réseaux, Télécommunications, Systèmes et Architecture, 2017, INP Toulouse
URL: http://www.theses.fr/2017INPT0058
► L’aviation civile moderne dépend de plus en plus sur l’interconnexion de tous les acteurs qu’il soit avionneur, équipementier, contrôleur aérien, pilote, membre d’équipage ou compagnie…
(more)
▼ L’aviation civile moderne dépend de plus en plus sur l’interconnexion de tous les acteurs qu’il soit avionneur, équipementier, contrôleur aérien, pilote, membre d’équipage ou compagnie aérienne. Ces dernières années, de nombreux travaux ont été réalisés dans le but de proposer des méthodes pour simplifier la tache des pilotes, de mieux contrôler et optimiser l’espace aérien, de faciliter la gestion des vols par les compagnies aériennes et d’optimiser les taches de maintenance entre les vols. De plus, les compagnies aériennes cherchent non seulement a offrir a ses passagers, de plus en plus exigeants, des services de divertissements, de messagerie et de navigation sur le Web mais également des services de connexion a Internet pour leurs propres appareils. Cette omniprésence de connectivité dans le domaine aéronautique a ouvert la voie a un nouvel ensemble de cyber-menaces. L’industrie doit donc être en mesure de déployer des mécanismes de sécurité qui permettent d’offrir les mêmes garanties que la sûreté de fonctionnement tout en permettant de répondre aux nombreux besoins fonctionnels de tous les acteurs. Malgré tout, il existe peu de solutions permettant l’analyse et la détection d’intrusion sur les systèmes avioniques embarqués. La complexité des mises a jour sur de tel système rend difficile l’utilisation de mécanismes strictement a base de signatures alors il est souhaitable que des mécanismes plus "intelligents", a l’abri de l’évolution des menaces, puissent être développés et mis en place. Cette thèse s’inscrit dans une démarche de mise en place de mécanismes de sécurité pour les communications entre le sol et l’avion, et plus particulièrement un système de détection d’intrusion pour le système de communication aéronautique ACARS visant a protéger les fonctions Air Traffic Control (ATC) et Aeronautical Operational Control (AOC) embarquées dans l’avion. Fonde sur la détection d’anomalie, un premier modèle propose permet de discriminer les messages ACARS anormaux a l’aide d’une technique empruntée a la classification de texte, les n-grammes. Un second modèle propose, également fonde sur la détection d’anomalie, permet de modéliser, a l’aide des chaines de Markov, l’ensemble des messages échanges entre le bord et le sol durant un vol complet permettant de détecter des messages ne faisant pas partie d’une communication normale. Une dernière contribution consiste en une alternative a la courbe ROC pour évaluer les performances d’un système de détection d’intrusion lorsque le jeu de données disponible contient seulement des instances normales.
Modern civil aviation is increasingly dependent on the interconnection of all players, be it aircraft manufacturers, air traffic controllers, pilots, crew members or airlines. In recent years, much work has been done to propose methods to simplify the task of pilots, to better control and optimize airspace, to facilitate the management of flights by airlines and to optimize the maintenance tasks between flights. In addition, airlines are seeking not only to provide more…
Advisors/Committee Members: Aguilar Melchor, Carlos (thesis director), Jakllari, Gentian (thesis director).
Subjects/Keywords: Détection d’intrusion; Aéronautique; ACARS; Systèmes embarqués; Journalisation; Sécurité; Intrusion detection; Avionics; ACARS; Embedded; Logging; Security
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APA (6th Edition):
Asselin, E. (2017). Système de détection d'intrusion adapté au système de communication aéronautique ACARS : Intrusion detection system for ACARS communications. (Doctoral Dissertation). INP Toulouse. Retrieved from http://www.theses.fr/2017INPT0058
Chicago Manual of Style (16th Edition):
Asselin, Eric. “Système de détection d'intrusion adapté au système de communication aéronautique ACARS : Intrusion detection system for ACARS communications.” 2017. Doctoral Dissertation, INP Toulouse. Accessed January 17, 2021.
http://www.theses.fr/2017INPT0058.
MLA Handbook (7th Edition):
Asselin, Eric. “Système de détection d'intrusion adapté au système de communication aéronautique ACARS : Intrusion detection system for ACARS communications.” 2017. Web. 17 Jan 2021.
Vancouver:
Asselin E. Système de détection d'intrusion adapté au système de communication aéronautique ACARS : Intrusion detection system for ACARS communications. [Internet] [Doctoral dissertation]. INP Toulouse; 2017. [cited 2021 Jan 17].
Available from: http://www.theses.fr/2017INPT0058.
Council of Science Editors:
Asselin E. Système de détection d'intrusion adapté au système de communication aéronautique ACARS : Intrusion detection system for ACARS communications. [Doctoral Dissertation]. INP Toulouse; 2017. Available from: http://www.theses.fr/2017INPT0058
24.
Lastera, Maxime.
Architecture sécurisée pour les systèmes d'information des avions du futur. : Secure architecture for information systems of future aircraft.
Degree: Docteur es, Systèmes Informatiques et Systèmes Embarqués, 2012, Toulouse, INSA
URL: http://www.theses.fr/2012ISAT0054
► Traditionnellement, dans le domaine avionique les logiciels utilisés à bord de l’avion sont totalement séparés des logiciels utilisés au dehors afin d’éviter toutes interaction qui…
(more)
▼ Traditionnellement, dans le domaine avionique les logiciels utilisés à bord de l’avion sont totalement séparés des logiciels utilisés au dehors afin d’éviter toutes interaction qui pourrait corrompre les systèmes critiques à bord de l’avion. Cependant, les nouvelles générations d’avions exigent plus d’interactions avec le monde ouvert avec pour objectif de proposer des services étendu, générant ainsi un flux d’information potentiellement dangereux. Dans une précédente étude, nous avons proposé l’utilisation de la virtualisation pour assurer la sûreté de fonctionnement d’applications critiques assurant des communications bidirectionnelles entre systèmes critiques et systèmes non sûr. Dans cette thèse nous proposons deux contributions.La première contribution propose une méthode de comparaison d’hyperviseur. Nous avons développé un banc de test permettant de mesurer les performances d’un système virtualisé. Dans cette étude, différentes configurations ont été expérimentées, d’un système sans OS à une architecture complète avec un hyperviseur et un OS s’exécutant dans une machine virtuelle. Plusieurs tests (processeur, mémoire et réseaux) ont été mesurés et collectés sur différents hyperviseurs.La seconde contribution met l’accent sur l’amélioration d’une architecture de sécurité existante. Un mécanisme de comparaison basé sur l’analyse des traces d’exécution est utilisé pour détecter les anomalies entre instances d’application exécutées sur diverse machines virtuelles. Nous proposons de renforcer le mécanisme de comparaison à l’exécution par l’utilisation d’un modèle d’exécution issu d’une analyse statique du bytecode Java.Afin de valider notre approche, nous avons développé un prototype basé sur un cas d’étude identifié avec Airbus qui porte sur l’utilisation d’un ordinateur portable dédié à la maintenance
Traditionally, in avionics, on-board aircraft software used to be totally separated from open-world software in order to avoid any interaction that could corrupt critical on-board systems. However, new aircraft generations require more interaction with off-board systems to provide extended services, which makes these information flows potentially dangerous.In a previous work, we have proposed the use of virtualization to ensure dependability of critical applications despite bidirectional communication between critical on-board systems and untrusted off-board systems. In this thesis, we propose two contributions.The first contribution concerns the establishment of a benchmark of hypervisors. We have developed a test bed to assess the performance impact induced by the use of virtualization. In this work, various configurations have been experimented ranging from a basic machine without an OS up to the complete architecture featuring a hypervisor and an OS running in a virtual machine. Several tests (computation, memory, and network) are carried out, and timing measures are collected on different hypervisors.The second contribution focuses on the improvement of an existing security architecture. A comparison…
Advisors/Committee Members: Arlat, Jean (thesis director), Alata, Eric (thesis director).
Subjects/Keywords: Sûreté de fonctionnement; Virtualisation; Avionique; Logiciel critique; Dependability; Fault tolerance; Avionics; Critical systems; Virtualization; 004
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APA ·
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APA (6th Edition):
Lastera, M. (2012). Architecture sécurisée pour les systèmes d'information des avions du futur. : Secure architecture for information systems of future aircraft. (Doctoral Dissertation). Toulouse, INSA. Retrieved from http://www.theses.fr/2012ISAT0054
Chicago Manual of Style (16th Edition):
Lastera, Maxime. “Architecture sécurisée pour les systèmes d'information des avions du futur. : Secure architecture for information systems of future aircraft.” 2012. Doctoral Dissertation, Toulouse, INSA. Accessed January 17, 2021.
http://www.theses.fr/2012ISAT0054.
MLA Handbook (7th Edition):
Lastera, Maxime. “Architecture sécurisée pour les systèmes d'information des avions du futur. : Secure architecture for information systems of future aircraft.” 2012. Web. 17 Jan 2021.
Vancouver:
Lastera M. Architecture sécurisée pour les systèmes d'information des avions du futur. : Secure architecture for information systems of future aircraft. [Internet] [Doctoral dissertation]. Toulouse, INSA; 2012. [cited 2021 Jan 17].
Available from: http://www.theses.fr/2012ISAT0054.
Council of Science Editors:
Lastera M. Architecture sécurisée pour les systèmes d'information des avions du futur. : Secure architecture for information systems of future aircraft. [Doctoral Dissertation]. Toulouse, INSA; 2012. Available from: http://www.theses.fr/2012ISAT0054
University of Manitoba
25.
Arefin, Syed Samsul.
Model-based testing of safety-critical avionics systems.
Degree: Computer Science, 2017, University of Manitoba
URL: http://hdl.handle.net/1993/32391
► Safety-critical systems in aviation domain often go through the formal process of airworthiness certification DO-178C, which ensures system's safe and risk-free operation. Two of the…
(more)
▼ Safety-critical systems in aviation domain often go through the formal process of airworthiness certification DO-178C, which ensures system's safe and risk-free operation. Two of the main requirements for this certification are to have traceability between specifications and test cases, and have high code coverage. In this thesis, I have implemented a Model-Based Testing (MBT) tool to automate system-level test generation from specification models. MBT alone provides the traceability requirement. To improve the code coverage, unlike transition coverage based MBT, I target model-constraints in a more demanding manner, Modified Condition/Decision Coverage (MC/DC), and generate an extra set of test cases using an evolutionary algorithm that leads to higher code coverage. The result shows, the proposed approach improves the MC/DC model-constraint coverage by 65% and the code-level C/D coverage by 33% for a sample specification model. The proposed approach also detected three new faults in the system.
Advisors/Committee Members: Hemmati, Hadi (Computer Science), Mohammed, Noman (Computer Science).
Subjects/Keywords: Avionics systems; Airworthiness certification; Do-178c; Model-based testing; Search-bases software testing; Test automation
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APA (6th Edition):
Arefin, S. S. (2017). Model-based testing of safety-critical avionics systems. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/32391
Chicago Manual of Style (16th Edition):
Arefin, Syed Samsul. “Model-based testing of safety-critical avionics systems.” 2017. Masters Thesis, University of Manitoba. Accessed January 17, 2021.
http://hdl.handle.net/1993/32391.
MLA Handbook (7th Edition):
Arefin, Syed Samsul. “Model-based testing of safety-critical avionics systems.” 2017. Web. 17 Jan 2021.
Vancouver:
Arefin SS. Model-based testing of safety-critical avionics systems. [Internet] [Masters thesis]. University of Manitoba; 2017. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1993/32391.
Council of Science Editors:
Arefin SS. Model-based testing of safety-critical avionics systems. [Masters Thesis]. University of Manitoba; 2017. Available from: http://hdl.handle.net/1993/32391
26.
Gustafsson, Markus.
A Server for ARINC 615A Loading.
Degree: The Institute of Technology, 2013, Linköping UniversityLinköping University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-100443
► The development of the next generation of Saab's multirole combat aircraft the JAS 39 Gripen includes developing a lot of new software for the…
(more)
▼ The development of the next generation of Saab's multirole combat aircraft the JAS 39 Gripen includes developing a lot of new software for the aircraft's on-board computers. The new software has to be loaded into these computers routinely, in order to carry out testing on it. This is currently a slow and tedious process. In order to load the computers a protocol defined in the ARINC 615A standard is used. Today Saab uses commercial software applications implementing this protocol for the loading process. These applications have significant disadvantages, such as not being able to load several computers in parallel or only being able to load computers from a specific manufacturer. In this thesis we introduce a system using a client-server architecture that allows users to load the computers in parallel, regardless of the manufacturer. In Section 3.2.2 we show that our system reduces the time required to load the aircraft's on-board computers significantly. We also indicate some improvements that can be made in order to speed up the process even further. These improvements mainly involve improving the on-board computers themselves through the use of faster persistent storage and support for later revisions of the protocol involved.
Subjects/Keywords: Avionics; ARINC 615A; Software Loading; Computer and Information Sciences; Data- och informationsvetenskap
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APA ·
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APA (6th Edition):
Gustafsson, M. (2013). A Server for ARINC 615A Loading. (Thesis). Linköping UniversityLinköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-100443
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gustafsson, Markus. “A Server for ARINC 615A Loading.” 2013. Thesis, Linköping UniversityLinköping University. Accessed January 17, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-100443.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gustafsson, Markus. “A Server for ARINC 615A Loading.” 2013. Web. 17 Jan 2021.
Vancouver:
Gustafsson M. A Server for ARINC 615A Loading. [Internet] [Thesis]. Linköping UniversityLinköping University; 2013. [cited 2021 Jan 17].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-100443.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gustafsson M. A Server for ARINC 615A Loading. [Thesis]. Linköping UniversityLinköping University; 2013. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-100443
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Jönköping University
27.
Gustavsson, Henrik.
Utvärdering av simulatorer och emulatorer för inbyggda system.
Degree: Computer and Electrical Engineering, 2011, Jönköping University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-17983
► Uppdragsgivaren Saab Electronic Defence Systems i Jönköping erbjuder ett flertal produkter främst inom avioniksystem. För att kunna utvärdera och kontrollera produktens design i ett…
(more)
▼ Uppdragsgivaren Saab Electronic Defence Systems i Jönköping erbjuder ett flertal produkter främst inom avioniksystem. För att kunna utvärdera och kontrollera produktens design i ett tidigt skede så kan en simulering av systemets beteende och att felsöka så tidigt som möjligt vara ett möjligt alternativ. En systemsimulering kan innebära att mjukvaruutveckling och felsökning kan påbörjas långt innan hårdvaruprototypen är tillgänglig, med samma storlek och komplexitet som systemet.
Andra fördelar med simulering är att det går enklare att fastställa orsaken till systemkrasch, hitta de längsta exekveringstiderna och göra felinjiceringar. Syftet med detta examensarbete är att testa och utvärdera hur simulatorer och emulatorer är som utvecklings- och testverktyg.
Rapporten innehåller en marknadsundersökning där tio stycken emulatorer och simulatorer hittades. Av dessa valdes två stycken ut, Wind River Simics och Imperas OVPSim. Tester utfördes för användarvänlighet, debugging, samt jämförande tester mellan riktig hårdvara och simulerad miljö. Resultatet visar att simulatorer kan hjälpa till vid produktutveckling, men att de ännu inte är så optimala för att utvärdera hårdvara i. Detta för att avvikelser kan förekomma i exekveringstider mellan riktig och simulerad hårdvaruarkitektur.
This thesis has been carried out in cooperation with Saab Electronic Defence Systems in Jönköping which has a wide range of products, mainly for Avionic applications. In order to evaluate and verify their design it is often required to simulate behaviour and debug as early as possible. System simulation can enable software development and debug to commence long before a hardware prototype is available and also scale with the size and complexity of the system.
Another benefit of simulation is to more easily determine root causes to system crashes, establish worst case execution time cases and making fault injection. Therefore this thesis will focus on evaluating simulators and emulators, as development- and testing tools.
This report contains a marketing research, where ten emulators and simulators were found. Of these, two simulators were chosen for further investigation; WindRiver Simics and Imperas OVPSim. The evaluations considered both usability and debugging features as well as comparative tests between real hardware and the simulated environment. The results show that simulators can help in product development, but they are not yet optimal for evaluating hardware. This is because deviations may occur in execution times between real and simulated hardware architectures.
Subjects/Keywords: simulators; emulators; PowerPC; embedded systems; avionics; simulatorer; emulatorer; PowerPC; inbyggda system; avionik
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APA (6th Edition):
Gustavsson, H. (2011). Utvärdering av simulatorer och emulatorer för inbyggda system. (Thesis). Jönköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-17983
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gustavsson, Henrik. “Utvärdering av simulatorer och emulatorer för inbyggda system.” 2011. Thesis, Jönköping University. Accessed January 17, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-17983.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gustavsson, Henrik. “Utvärdering av simulatorer och emulatorer för inbyggda system.” 2011. Web. 17 Jan 2021.
Vancouver:
Gustavsson H. Utvärdering av simulatorer och emulatorer för inbyggda system. [Internet] [Thesis]. Jönköping University; 2011. [cited 2021 Jan 17].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-17983.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gustavsson H. Utvärdering av simulatorer och emulatorer för inbyggda system. [Thesis]. Jönköping University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-17983
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
28.
Sobron, Alejandro.
Design and Testing of a Flight Control System for Unstable Subscale Aircraft.
Degree: Faculty of Science & Engineering, 2015, Linköping UniversityLinköping University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121819
► The primary objective of this thesis was to study, implement, and test low-cost electronic flight control systems (FCS) in remotely piloted subscale research aircraft…
(more)
▼ The primary objective of this thesis was to study, implement, and test low-cost electronic flight control systems (FCS) in remotely piloted subscale research aircraft with relaxed static longitudinal stability. Even though this implementation was carried out in small, simplified test-bed aircraft, it was designed with the aim of being installed later in more complex demonstrator aircraft such as the Generic Future Fighter concept demonstrator project. The recent boom of the unmanned aircraft market has led to the appearance of numerous electronic FCS designed for small-scale vehicles and even hobbyist-type model aircraft. Therefore, the purpose was not to develop a new FCS from scratch, but rather to take advantage of the available technology and to examine the performance of different commercial off-the-shelf (COTS) low-cost systems in statically unstable aircraft models. Two different systems were integrated, calibrated and tested: a simple, gyroscope-based, single-axis controller, and an advanced flight controller with a complete suite of sensors, including a specifically manufactured angle-of-attack transducer. A flight testing methodology and appropriate flight-test data analysis tools were also developed. The satisfactory results are discussed for different flight control laws, and the controller tuning procedure is described. On the other hand, the different test-bed aircraft were analysed from a theoretical point of view by using common aircraft-design methods and conventional preliminary-design tools. The theoretical models were integrated into a flight dynamics simulator, which was compared with flight-test data obtaining a reasonable qualitative correlation. Possible FCS modifications are discussed and some future implementations are proposed, such as the integration of the angle-of-attack in the control laws.
Subjects/Keywords: aircraft design; systems integration; subscale flight testing; avionics; flight control system; remotely piloted aircraft
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APA (6th Edition):
Sobron, A. (2015). Design and Testing of a Flight Control System for Unstable Subscale Aircraft. (Thesis). Linköping UniversityLinköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121819
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sobron, Alejandro. “Design and Testing of a Flight Control System for Unstable Subscale Aircraft.” 2015. Thesis, Linköping UniversityLinköping University. Accessed January 17, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121819.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sobron, Alejandro. “Design and Testing of a Flight Control System for Unstable Subscale Aircraft.” 2015. Web. 17 Jan 2021.
Vancouver:
Sobron A. Design and Testing of a Flight Control System for Unstable Subscale Aircraft. [Internet] [Thesis]. Linköping UniversityLinköping University; 2015. [cited 2021 Jan 17].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121819.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sobron A. Design and Testing of a Flight Control System for Unstable Subscale Aircraft. [Thesis]. Linköping UniversityLinköping University; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121819
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Minnesota
29.
Lie, F. Adhika Pradipta.
Synthetic air data estimation: a case study of model-aided estimation.
Degree: PhD, Aerospace Engineering and Mechanics, 2014, University of Minnesota
URL: http://hdl.handle.net/11299/168265
► A method for estimating airspeed, angle of attack, and sideslip without using conventional, pitot-static airdata system is presented. The method relies on measurements from GPS,…
(more)
▼ A method for estimating airspeed, angle of attack, and sideslip without using conventional, pitot-static airdata system is presented. The method relies on measurements from GPS, an inertial measurement unit (IMU) and a low-fidelity model of the aircraft's dynamics which are fused using two, cascaded Extended Kalman Filters. In the cascaded architecture, the first filter uses information from the IMU and GPS to estimate the aircraft's absolute velocity and attitude. These estimates are used as the measurement updates for the second filter where they are fused with the aircraft dynamics model to generate estimates of airspeed, angle of attack and sideslip. Methods for dealing with the time and inter-state correlation in the measurements coming from the first filter are discussed. Simulation and flight test results of the method are presented. Simulation results using high fidelity nonlinear model show that airspeed, angle of attack, and sideslip angle estimation errors are less than 0.5 m/s, 0.1 deg, and 0.2 deg RMS, respectively.Factors that affect the accuracy including the implication and impact of using a low fidelity aircraft model are discussed. It is shown using flight tests that a single linearized aircraft model can be used in lieu of a high-fidelity, non-linear model to provide reasonably accurate estimates of airspeed (less than 2 m/s error), angle of attack (less than 3 deg error), and sideslip angle (less than 5 deg error). This performance is shown to be relatively insensitive to off-trim attitudes but very sensitive to off-trim velocity.
Subjects/Keywords: Aircraft; Air data; Avionics; Estimation; Kalman filter; Navigation; Aerospace engineering and mechanics
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APA (6th Edition):
Lie, F. A. P. (2014). Synthetic air data estimation: a case study of model-aided estimation. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/168265
Chicago Manual of Style (16th Edition):
Lie, F Adhika Pradipta. “Synthetic air data estimation: a case study of model-aided estimation.” 2014. Doctoral Dissertation, University of Minnesota. Accessed January 17, 2021.
http://hdl.handle.net/11299/168265.
MLA Handbook (7th Edition):
Lie, F Adhika Pradipta. “Synthetic air data estimation: a case study of model-aided estimation.” 2014. Web. 17 Jan 2021.
Vancouver:
Lie FAP. Synthetic air data estimation: a case study of model-aided estimation. [Internet] [Doctoral dissertation]. University of Minnesota; 2014. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/11299/168265.
Council of Science Editors:
Lie FAP. Synthetic air data estimation: a case study of model-aided estimation. [Doctoral Dissertation]. University of Minnesota; 2014. Available from: http://hdl.handle.net/11299/168265
Brno University of Technology
30.
Gabriel, Petr.
Simulovaná rozhraní testovací stanice avioniky: Simulated interfeace of test bench.
Degree: 2019, Brno University of Technology
URL: http://hdl.handle.net/11012/32082
► This thesis describes the design of solution for remote management and control of Honeywell Primus EPIC avionics test bench. The thesis also describes avionics, test…
(more)
▼ This thesis describes the design of solution for remote management and control of Honeywell Primus EPIC
avionics test bench. The thesis also describes
avionics, test bench, specifications and data transfer via RS-422 bus and ARINC 429.
Advisors/Committee Members: Ing. Michal Závišek. Honeywell,spol. s r.o. (advisor), Šteffan, Pavel (referee).
Subjects/Keywords: Avionika; vzdálené ovládání; simulace; Dassault; testovací stanice; Avionics; remote control; simulation; Dassault; test bench
Record Details
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Record Details
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Cite
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gabriel, P. (2019). Simulovaná rozhraní testovací stanice avioniky: Simulated interfeace of test bench. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/32082
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gabriel, Petr. “Simulovaná rozhraní testovací stanice avioniky: Simulated interfeace of test bench.” 2019. Thesis, Brno University of Technology. Accessed January 17, 2021.
http://hdl.handle.net/11012/32082.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gabriel, Petr. “Simulovaná rozhraní testovací stanice avioniky: Simulated interfeace of test bench.” 2019. Web. 17 Jan 2021.
Vancouver:
Gabriel P. Simulovaná rozhraní testovací stanice avioniky: Simulated interfeace of test bench. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/11012/32082.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gabriel P. Simulovaná rozhraní testovací stanice avioniky: Simulated interfeace of test bench. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/32082
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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Open Access Theses and Dissertations
