Lockheed Constellation

Constellation
A USAF C-69, the military version of the Constellation
General information
Type	Airliner and transport
Manufacturer	Lockheed
Status	In very limited service
Number built	856
History
Manufactured	1943–1958
Introduction date	1943 with USAAF 1945 with TWA
First flight	January 9, 1943
Retired	1990s, airline service 1978, military
Developed from	L-044 Excalibur
Variants	L-049 Constellation C-69 Constellation L-649 Constellation L-749 Constellation L-1049 Super Constellation C-121/R7V Constellation R7V-2/YC-121F Constellation EC-121 Warning Star L-1649A Starliner
Developed into	Lockheed XB-30 (Unbuilt)

The Lockheed Constellation ("Connie") is a propeller-driven, four-engined airliner built by Lockheed Corporation starting in 1943. The Constellation series was the first civil airliner family to enter widespread use equipped with a pressurized cabin, enabling it to fly well above most bad weather, thus significantly improving the general safety and ease of commercial passenger air travel.^[1]

Several different models of the Constellation series were produced, although they all featured the distinctive triple-tail and dolphin-shaped fuselage. Most were powered by four 18-cylinder Wright R-3350 Duplex-Cyclones. In total, 856 were produced between 1943 and 1958 at Lockheed's plant in Burbank, California, and used as both a civil airliner and as a military and civilian cargo transport. Among their famous uses was during the Berlin and the Biafran airlifts. Three served as the presidential aircraft for Dwight D. Eisenhower, one of which is at the National Museum of the United States Air Force.