The Bell P-39 �Airacobra� was among the principal fighter aircraft in service around forces at first of World War II. It had been build by the Bell Aircraft Corporation. Its maiden journey was at April 1939. The aircraft's uncommon design showcased an Allison motor mounted during the fuselage, just behind the pilot, driving the propeller through a driveshaft going involving the pilot's feet. A 37 mm T9 cannon fired through center from the propeller hub. Entry toward cockpit ended up being through a side door.A complete of 9,584 examples had been produced, with increased than half being delivered to the Soviet Union in lend-lease system.