Accession Number : AD0703146

Title :   DEVELOPMENT TESTS OF SCREENED ARMOR PLATE,

Corporate Author : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : Leeder,J.

Report Date : 14 AUG 1941

Pagination or Media Count : 85

Abstract : The results obtained in the first Development Test of Screened Armor Plate at A. P. G., Firing Record 20774, A310 were analyzed. The use of tipping screens was shown to have produced extraordinary increases in protective efficiency of both face hardened and homogeneous armor plate, particularly for the latter type. In view of the somewhat inappropriate location of the yaw cards, direct correlation of striking yaw and armor plate penetration was not possible. For the caliber 50 firings, however, it appears that striking yaws of at least 30 deg-40 deg must be attained for the desired large increases in armor plate resistance, and that the exact striking yaw when greater than this approximation is of secondary importance. A general discussion of some aspects of screened armor plate is given and recommendations made for an extensive program involving both the armor plate and tipping screen phases of the problem. (Author)

Descriptors :   (*ANTIAIRCRAFT AMMUNITION, TERMINAL BALLISTICS), (*ARMOR PLATE, FIRING TESTS(ORDNANCE)), EXTERIOR BALLISTICS, YAW, TUMBLING, IMPACT, TENSILE PROPERTIES, PENETRATION

Subject Categories : Ballistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE