The BDU-33 and BDU-50 Practical Bombs were designed for training to simulate the launch conditions of general-purpose bombs.
GESPI's MK 81, 82, 83 and 84 General Purpose Bombs are low air resistance bombs used in aircraft bombing operations. They are equipped with electronic proximity fuzes or mechanical impact nose (M904) and tail (M905) to ensure reliability and produce explosive, explosion and fragmentation effects. Bombs are usually used against artillery, bunkers, troops, POL, vehicles, buildings, and more.
M904 on the left, and M905 on the right
The M904 is a NATO standard mechanical nose fuze used in the MK 80 series bombs. It is used in conjunction with its booster and can be configured to arm between 2 and 18 seconds. It uses M9 delay element (nondelay, 0.01, 0.025, 0.05, 0.1 or 0.25s).
The M905 is a NATO standard mechanical tail fuze used in the MK 80 series bombs. It is used in conjunction with its booster and can be configured to arm between 2 and 18s. It is armed through its anemometer and uses M9 retardation element (0.01, 0.025, 0.05, 0.1 or 0.25s).