Introduction

These bombs were designed for special operational uses to give deep penetration of the earth and to produce heavy shock waves as a result of the explosion of their main charge. They have a charge/weight ratio of about 45%, and are not intended for use as armor- or concrete-piercing bombs.

The two sizes of bombs are identical in all respects, the 22,000-lb. D.P. being merely an enlarged version of the 12,000-lb. D.P. A rather unusual feature of these bombs is the use of a cowl between the bomb body and the tail assembly to enhance their streamlin-ing. Both D.P. bombs are tail fuzed only, each bomb using three Teil Pistols No. 58 loca-ted 120 degrees apart in the base plate.

These bombs have been adapted by the U.S. for service use after slight modifications in the method of construction.