Resistance of Various Proposed Components of Flak-Curtains to Perforation by Flak-Simulating Projectiles.

摘要

As a result of a request from the Office, Chief of Ordnance1, a program of investigation of various materials proposed as components of flak-resistant curtains has been conducted at this arsenal over the past several months. As originally contemplated, this program would have included the development of a projectile which would simulate reproducibly and measurably the impact of fragments of high-explosive anti-aircraft shell. Indeed, a projectile similar in design to the cal. .22 fragment-simulating projectile, G-22, has been tested. However the lack of correlation between the results of actual fragmentation tests of 20mm. high-explosive projectiles and the results of tests with the cal. .22 projectile or any other single projectile has led to an abandonment of the contention that any one projectile may be developed which may reproducibily and measurably simulate the effect of service impact of high-explosive shell fragments against all materials. Nevertheless several materials have been tested at this arsenal with various projectiles and the results of these tests may be of some use in the formation of an opinion as to the relative resistance characteristics of these materials to the attack of fragments of high-explosive anti-aircraft shell. It is the purpose of this report to present these results.