Computer Studies of Aircraft Fuel Tank Response to Ballistic Penetrators.

摘要

A major goal of the hydraulic ram survivability program for aircraft fuel tanks is the development of an economical computer code which accurately predicts the pressure in the fluid, the response of the tank walls, and the crack damage to the tank due to a ballistic projectile. This study compares the tank wall response predicted by the recently modified SATANS code with the data from studies performed by California Research and Technology, Inc., the Naval Weapons Center, and the University of Dayton Research Institute. Good agreement among the results is obtained for this phase of the study. Additionally, a comparison of the predicted crack length in the entry wall of the tank using Fahrenkrog's criterion and SATANS' predicted circumferential stresses is made with actual crack lengths from a test performed by the University of Dayton Research Institute. The predicted crack lengths were in excellent agreement with the actual crack lengths. (Author)