File:Computerized Ballistic modeling of the Comanche tailfan shroud (IA computerizedball00step).pdf

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Original file (1,222 × 1,606 pixels, file size: 2.67 MB, MIME type: application/pdf, 72 pages)

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Computerized Ballistic modeling of the Comanche tailfan shroud   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
Stephan, Allen H.
image of artwork listed in title parameter on this page
Title
Computerized Ballistic modeling of the Comanche tailfan shroud
Publisher
Monterey, California: Naval Postgraduate School;Springfield, Va.: Available from National Technical Information Service
Description
Thesis advisors, Wood, E. Roberts ; Danielson, D.A
"December 2000."
Thesis (M.S. in Aeronautical Engineering) Naval Postgraduate School, Dec. 2000
Includes bibliographical references (p. 29)
The U.S. Army has contracted Boeing-Sikorsky to develop the RAH-66 Comanche, a new, armed reconnaissance helicopter that features stealth technology designed to improve survivability when operating in hostile environments. Ballistic testing is required on the Comanche prior to fielding. Computer based simulations are being employed in order to reduce requirements for expensive live-fire testing. This thesis uses a computer program called Dytran from MacNeal-Schwendler to simulate the effects of an explosive round detonating in the Comanche tailfan shroud. Six test cases involving explosions with varying amounts of explosive energy, or specific internal energy, are evaluated. From these tests, a curve showing the percentage of structural failure versus the specific internal energy is plotted. Assuming that 20% structural failure of the model equates to a catastrophic failure, this analysis shows that the analyzed section of the Comanche tailfan shroud can withstand an explosion with a specific 10 2 2 internal energy of 2.58 * 10 in Isec . Any potential threat rounds with specific internal energies greater than 2.58 * 1010 in2/sec2 will ose serious threats to the Comanche
Mode of access: World Wide Web
System requirements: Adobe Acrobat reader
US Army (USA) author
dk/dk cc:9116 06/08/01

Subjects:
Language en_US
Publication date 1 December 2000
Current location
IA Collections: navalpostgraduateschoollibrary; fedlink; americana
Accession number
computerizedball00step
Authority file  OCLC: 1042446038
Source
Internet Archive identifier: computerizedball00step
https://archive.org/download/computerizedball00step/computerizedball00step.pdf

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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current05:46, 16 July 2020Thumbnail for version as of 05:46, 16 July 20201,222 × 1,606, 72 pages (2.67 MB)Fæ (talk | contribs)FEDLINK - United States Federal Collection computerizedball00step (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #12010)

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