The New Role of Fragmentation Bombs
When the United States forces began to move forward the need for a bomb to be used against troops became clear, and the theatres began to demand the 20-pound fragmentation bomb. Standardized in 1940 and adopted by the Joint Aircraft Committee early in 1942 as the AN-M41,26 this small bomb weighed not more than 23 pounds, even with a parachute attachment. It was not dropped singly, but by sixes in a cluster that would fit in an airplane’s 100-pound bomb station. Clustering was made possible by the use of an adapter consisting of a hollow rod to which the bombs were wired. When the adapter was released from the aircraft an arming wire was pulled, activating a cartridge with a steel slug that cut the wires holding the bombs. The bombs fell free, arming themselves with their own arming vanes. Later design modification eliminated the cartridge and substituted clamped straps