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You searched for subject:(Torpedoes). Showing records 1 – 2 of 2 total matches.

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Georgia Tech

1. Cameron, Peter J. K. An acoustic countermeasure to supercavitating torpedoes.

Degree: PhD, Mechanical Engineering, 2009, Georgia Tech

Supercavitating torpedoes pose new threats to submarines, surface ships, and shore targets whose current countermeasures are inadequate against this technology. These torpedoes have the advantage over their predecessors and companion weapons of dramatically increased speed, which reduces the reaction time available for deploying a countermeasure heightening the threat to their intended target. Proliferation of supercavitating torpedoes has motivated research on countermeasures against them as well as on the fluid phenomenon which makes them possible. The goal of this research was to investigate an envisaged countermeasure; an acoustic field capable of slowing or diverting the weapon by disrupting the cavitation envelope. The research focused on the interactions between high-level sound signals and a supercavity produced by a small free-flying projectile. In order to conduct this study it was necessary to achieve three preliminary accomplishments involving the design of: 1) experimental apparatus that allowed for the study of a small-scale supercavitating projectile in the laboratory environment; 2) apparatus and software for measuring and recording information about projectile dynamics and supercavity geometry; and 3) an acoustic array and power source capable of focusing the desired sound signal in the path of the supercavitating object. Positive results have been found which show that the accuracy of a supercavitating projectile can indeed be adversely affected by the sound signal. This research concludes with results that indicate that it is acoustic cavitation in the medium surrounding the supercavity that is responsible for the reduced accuracy. A hypothesis has been presented addressing the means by which the acoustic cavitation could cause this effect. Additionally, corrugations on the cavity/water interface imposed by the pressure signal have been observed and characterized. Advisors/Committee Members: Rogers, P. H. (Committee Chair), Ferri, A. A. (Committee Member), Ruzzene, M. (Committee Member), Smith, M. K. (Committee Member), Trivett, D. (Committee Member), Zinn, B. T. (Committee Member).

Subjects/Keywords: Acoustics; Supercavitation; Hydrodynamics; Ballistics; Cavitation; Torpedo; Torpedoes; Electronic countermeasures; Cavitation; Underwater acoustics; Acoustical engineering; Sound Transmission

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APA (6th Edition):

Cameron, P. J. K. (2009). An acoustic countermeasure to supercavitating torpedoes. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/29666

Chicago Manual of Style (16th Edition):

Cameron, Peter J K. “An acoustic countermeasure to supercavitating torpedoes.” 2009. Doctoral Dissertation, Georgia Tech. Accessed November 25, 2020. http://hdl.handle.net/1853/29666.

MLA Handbook (7th Edition):

Cameron, Peter J K. “An acoustic countermeasure to supercavitating torpedoes.” 2009. Web. 25 Nov 2020.

Vancouver:

Cameron PJK. An acoustic countermeasure to supercavitating torpedoes. [Internet] [Doctoral dissertation]. Georgia Tech; 2009. [cited 2020 Nov 25]. Available from: http://hdl.handle.net/1853/29666.

Council of Science Editors:

Cameron PJK. An acoustic countermeasure to supercavitating torpedoes. [Doctoral Dissertation]. Georgia Tech; 2009. Available from: http://hdl.handle.net/1853/29666


University of Georgia

2. Davis, Laura June. Vexed waters:.

Degree: 2018, University of Georgia

Vexed Waters: Naval Guerrillas, Masculinity, and Mayhem along the Lower Mississippi River in the Civil War Era delineates the exploits of pro-Confederate boat burners operating in St. Louis, Memphis, New Orleans, and other river towns. This project recounts how these irregular southern sailors wreaked havoc on northern shipping— at times even disguising themselves as part of the crew so that they could set steamboats ablaze, obstruct riverine navigability, curtail the effectiveness of the Union Navy, and invoke fear in the Northern populace. Vexed Waters contends that the Confederacy’s brown water war did not end with Vicksburg, but simply took on new, less conventional, more aggressive tactics. By focusing on something that the Confederate command itself understood—that the Mississippi River was the critical logistical and military geography of the war—my project brings to light an aspect of the Civil War that historians have largely managed to forget—the rebellion’s violent struggle for control of the Mississippi lasted until the war’s end. At its core, Vexed Waters is a community study, uncovering the boat burning agents and their networks of support; it traces naval guerrillas’ activities from the seedy bars and brothels where they planned the attacks to the steamboats they targeted to the jailhouses that confined them to the court rooms where they faced court martial trials. In doing so, it raise important questions about citizenship and loyalty as most boat burners were Southern sympathizers living in Union occupied territory. By recounting their exploits, I also uncover the identities of these Confederate agents and their varied motivations for employing fire, sabotage, and destruction. The result is a gendered analysis of the boat burners and their unique brand of martial manhood; they embraced explosive action and celebrated secrecy while actively manipulating the tensions, curiosities, and fears inherent to steamboat travel. The rebel incendiaries knew that the unavoidable mixing of society aboard steamboats made the vessels a breeding ground for gamblers, tricksters, con men, runaways, and terrorists; they simply played into these stereotypes, embracing the anonymity of steamboat travel and weaponizing a form of transport that most nineteenth century Americans took for granted.

Subjects/Keywords: Arson; Boat Burners; Civil War; Confederate States Navy; Gender History; Guerrillas; Incendiaries; Irregular Naval Warfare; Legal History; Lieber Code; Maritime History; Mississippi River; Naval Guerrillas; Naval History; Robert Louden; Sabotage; Steamboats; Sultana; Torpedoes; William Murphy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Davis, L. J. (2018). Vexed waters:. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/38360

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):

Davis, Laura June. “Vexed waters:.” 2018. Thesis, University of Georgia. Accessed November 25, 2020. http://hdl.handle.net/10724/38360.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Davis, Laura June. “Vexed waters:.” 2018. Web. 25 Nov 2020.

Vancouver:

Davis LJ. Vexed waters:. [Internet] [Thesis]. University of Georgia; 2018. [cited 2020 Nov 25]. Available from: http://hdl.handle.net/10724/38360.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Davis LJ. Vexed waters:. [Thesis]. University of Georgia; 2018. Available from: http://hdl.handle.net/10724/38360

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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