The Lockheed P-38 Lightning was an American twin-engine military fighter of the Second World War. Its pilot and weapons occupied a central nacelle between two engine-carrying booms. It served across Europe, the Mediterranean and the Pacific, where its range and performance made it particularly important to Army Air Forces fighter operations.[1]
Development
Lockheed's team, including Clarence “Kelly” Johnson, conceived the aircraft during the 1930s. The XP-38 first flew on 27 January 1939. Although the prototype was lost during an attempted transcontinental record flight, the Army continued the programme with thirteen service-test YP-38 aircraft.[1][2]
Early Lightnings experienced tail airflow disturbances and severe difficulties during high-speed dives. Subsequent modifications addressed these problems as production developed through several versions. The P-38E introduced a 20 mm cannon in place of the earlier planned 37 mm weapon.[2]
Armament and range
The mature fighter concentrated four .50-inch machine guns and a 20 mm cannon in the nose. Two Allison V-1710 engines powered the aircraft. The P-38F introduced racks for bombs or external fuel tanks, expanding both the attack role and the distance over which fighter missions could be conducted.[2]
The final production P-38L could carry two large drop tanks. Deliveries began in June 1944 and continued into 1945, making it a major late-war version.[2]
Operational reach
Lightnings operated from environments as different as the Aleutian Islands, North Africa and tropical Pacific bases. In the Pacific they became particularly successful against Japanese aircraft, demonstrating that a twin-engine fighter could be effective in single-pilot air combat.[1]
The Smithsonian's P-38J had a different wartime purpose: Lockheed converted it into a two-seat trainer for civilian test pilots. Its history illustrates the extensive training and production-test work required behind the operational Lightning fleet.[1]