Estudo de balística interna

O conhecimento e a compreensão dos processos que ocorrem no interior do tubo de uma arma de fogo, desde a ignição da carga propulsora, até à saída do projétil, é importante no desenvolvimento do armamento, de uma forma económica e segura. Com a modelação matemática destes processos, que é uma abordagem muito utilizada atualmente, é possível otimizar a carga explosiva e os materiais utilizados. Este estudo foi realizado no âmbito do projeto FIREND, resultante da colaboração entre a Academia Militar e o Instituto Superior Técnico O modelo desenvolvido foi aplicado a um sistema, arma, carga propulsora e projétil, já existente, tendo os resultados obtidos sido validados com o software PRODAS e tabelas referentes ao presente sistema. Para melhor compreender a importância das variáveis envolvidas, é feita uma análise de sensibilidade a diversos parâmetros balísticos, mantendo constante as dimensões da arma em estudo. Na análise dos resultados verifica-se que a cinta de travamento é um elemento muito importante, alterando significativamente os valores da pressão e da velocidade. Verificou-se também que com cargas propulsoras de maior taxa de queima é possível obter valores mais elevados de pressão máxima e velocidade à saída. Palavras chave: Balística interna; Projétil de Artilharia; Pressão; Velocidade; Modelação matemática; Análise de sensibilidade.

ICBM modernization : availability problems and flight test delays in Peacekeeper Program : report to the Chairman, Committee on Armed Services, House of Representatives /

"March 1989."

Strategic Defense Initiative program : extent of foreign participation : report to the Chairman, Subcommittee on Oversight and Investigations, Committee on Energy and Commerce, House of Representatives /

"B-223094."--p. 1.

Special Panel on the Strategic Defense Initiative [microform] : hearings before the Strategic Defense Initiative Panel of the Committee on Armed Services, House of Representatives, One Hundredth Congress, second session, hearings held April 20, July 14, September 29, and October 4, 1988.

"H.A.S.C. No, 100-90."

Program Evaluation Research Task (PERT) : summary report.

"September 1958."

A third survey of domestic electronic digital computing systems /

"This report supersedes BRL report no. 1010 ..."

The future of the ABM treaty : hearing before the International Security, Proliferation, and Federal Services Subcommittee of the Committee on Governmental Affairs, United States Senate, One Hundred Sixth Congress, first session, April 28, 1999.

Shipping list no.: 2000-0165-P.

Department of Defense authorization for appropriations for fiscal year 2010 : hearing before the Committee on Armed Services, United States Senate, One Hundred Eleventh Congress, first session, on S. 1390, to authorize appropriations for fiscal year 2010 for military activities of the Department of Defense, for military construction, and for defense activities of the Department of Energy, to prescribe personnel strengths for such fiscal year, and for other purposes.

"May 20 and June 3, 2009"--Pt. 6-7.

Instrumentation for magnetoaerodynamic heat transfer.

"Prepared for the Air Force Ballistic Missile Division, Headquarters Air Research and Development Command, under Contract AF(647)-309, Thermonuclear Propulsion Research."

A study of plasma stability in microwave cavities by a frequency-shift analog.

"Prepared for the Air Force Ballistic Missile Division, Headquarters Air Research and Development Command, under contract AF 04 (647)-309, Thermonuclear Propulsion Research."

Space charge limited current flow from a plane, plasma cathode,

"Prepared for the Air Force Ballistic Missile Division, Headquarters Air Research and Development Command, under contract AF 04(647)-309, Thermonuclear Propulsion Research."

The superfast pinch experiment.

"Prepared for the Air Force Ballistic Missile Division, Headquarters Air Research and Development Command, under Contract AF 04(647)-309, Thermonuclear Propulsion Research."

On one-dimensional channel flow in the presence of a magnetic field.

"Prepared for the Air Force Ballistic Missile Division, Headquarters Air Research and Development Command, under contract AF 04(647)-309 advanced propulsion systems."

Transverse pinch oscillations.

"Prepared for the Air Force Ballistic Missile Division, Headquarters Air Research and Development Command, under Contract AF 04 (647-309 Thermonuclear Propulsion Research."

Rate of heat-transfer near the stagnation point of a blunt body of revolution, in the presence of a magnetic field.

"Prepared for the Air Force Ballistic Missile Division, Headquarters Air Research and Development Command, under contract AF04(647)-127, call no. 4."