The Bell P-39 �Airacobra� finished up being one of many principal fighter aircraft operating around forces right from the start of World War II. It had been build by the Bell Aircraft Corporation Maiden journey April 1939. The aircraft's unusual design showcased its Allison motor mounted in the fuselage, merely behind the pilot, driving the propeller through a driveshaft moving relating to the pilot's legs. a 37 mm T9 cannon firing through center associated with propeller hub. Entry toward cockpit finished up being through a side door.Total 9,584 instance had been produced, with more than half being delivered to the Soviet Union in lend-lease system.