The Bell P-39 �Airacobra� was one of many principal fighter aircraft operating with American forces at the start of World War II. It absolutely was build by the Bell Aircraft Corporation. Its maiden trip was at April 1939. The aircraft's unusual design showcased an Allison motor mounted in the middle of the fuselage, just behind the pilot, driving the propeller through a driveshaft moving involving the pilot's legs. A 37 mm T9 cannon fired through center associated with the propeller hub. Entry to the cockpit was through a side door.A complete of 9,584 examples had been produced, with over half being provided for the Soviet Union underneath the lend-lease system.