The Cooper bomb was a British 20-pound (9 kg) bomb used extensively in World War I. It was the first high explosive bomb to be adapted by the Royal Flying Corps.
The Cooper bomb was a British 20-pound (9 kg) bomb used extensively in World War I. It was the first high explosive bomb to be adapted by the Royal Flying Corps.
The bomb was 24 lb (11 kg) in weight, of which 20 lb (9 kg) was the bomb casing and 4 lb (1.8 kg) was an explosive charge of Amatol. The main body was 5⁄16 inch (8 mm) thick, and was made of cast iron, steel, or semisteel. The aft body was made of wood and the fins from sheet steel.