Aircraft fuel tank vulnerability to hydraulic ram
Subtitle: modification of the Northrop finite element, computer code BR-1 to include fluid-structure interaction ; theory and user's manual for BR-1HR
By: by R.E. Ball
Contributors: Naval Postgraduate School (U.S.)
Publisher: Naval Postgraduate School
Published: 1974
Place of publication: Monterey, Calif
Language: eng
Number of pages: 35
Subjects: Hydraulic rams; Fuel tanks; Computer programs; Combat survivability; Military Airplanes; Airplanes; Design and construction
Description: The finite element digital computer code BR-1, developed by the Northrop Corporation, for predicting the effects of internal air blast on combat aircraft structures is modified to include the effects of compressible fluid-structure interaction.  The true interaction phenomenon is approximated by the piston theory.  The modification enables the code to be used to predict the structural response of aircraft fuel tanks subjected to penetrating bullets and fragments.  IT can also be used in many other fluid-structure interaction problems.  This report contains the theory, the modifications, and the additional instructions required to operate the modified code, called BR-1HR.  The code is operational on the IBM 360/67 in FORTRAN IV, Level H. (Author)
Notes: Title from cover.

"Prepared for: Air Force Flight Dynamics Laboratory, Wright-Patterson AFB, OH 45433"--Cover.

"July 1974"--Cover.

"NPS-57Bp74071"--Cover.

"Final report for period 1 July 1973 - 30 June 1974."

Author(s) subject terms: Aircraft survivability, aircraft vulnerability, fuel cells, hydraulic ram.

Includes bibliographical references (p. 23-24)

"Approved for public release; distribution unlimited"--Cover.

Technical report; 1974.