Lockheed Constellation

Constellation
Super Constellation
C-69 / C-121
A USAF C-69, the military version of the Constellation
Role Airliner
Manufacturer Lockheed
First flight January 9, 1943
Introduced 1943 with USAAF
1945 with TWA
Retired 1967, airline service
1978, military
Primary users Trans World Airlines, Eastern Air Lines, Pan American World Airways, Air France, BOAC, KLM, Qantas, Lufthansa, Iberia Airlines, Panair do Brasil, TAP Portugal, Trans-Canada Airlines (later renamed Air Canada), Aer Lingus and VARIG
United States Army Air Forces
Produced 1943–1958
Number built 856
Variants EC-121 Warning Star

The Lockheed Constellation ("Connie") was a propeller-driven airliner powered by four 18-cylinder radial Wright R-3350 engines. It was built by Lockheed between 1943 and 1958 at its Burbank, California, USA, facility. A total of 856 aircraft were produced in four models, all distinguished by a triple-tail design and dolphin-shaped fuselage. The Constellation was used as a civilian airliner and as a U.S. military air transport plane, seeing service in the Berlin Airlift. It was the presidential aircraft for U.S. President Dwight D. Eisenhower.

Contents

Design and development

Initial design studies

Since 1937, Lockheed had been working on the L-044 Excalibur, a four-engine pressurized airliner. In 1939, Trans World Airlines, at the instigation of major stockholder Howard Hughes, requested a 40-passenger transcontinental airliner with 3,500 mi (5,630 km) range[1] - well beyond the capabilities of the Excalibur design. TWA's requirements led to the L-049 Constellation, designed by Lockheed engineers including Kelly Johnson and Hall Hibbard.[2] Willis Hawkins, another Lockheed engineer, maintains that the Excalibur program was purely a cover for the Constellation.[3]

A preserved C-121C Super "Connie".

Development of the Constellation

The Constellation's wing design was close to that of the P-38 Lightning, differing mostly in scale.[4] The distinctive triple tail kept the aircraft's overall height low enough to fit in existing hangars,[3] while new features included hydraulically-boosted controls and a thermal de-icing system used on wing and tail leading edges.[1] The plane had a top speed of over 340 mph (547 km/h), a cruise speed of 300 mph (483 km/h), and a service ceiling of 24,000 ft (7,315 m).[5]

According to Anthony Sampson in Empires of the Sky, the intricate design may have been undertaken by Lockheed, but the concept, shape, capabilities, appearance and ethos of the Constellation were driven by Hughes' intercession during the design process.[6]

Operational history

World War II

The first Lockheed Constellation on January 9, 1943.

With the onset of World War II, the TWA aircraft entering production were converted to an order for C-69 Constellation military transport aircraft, with 202 aircraft intended for the United States Army Air Forces (USAAF). The first prototype (civil registration NX25600) flew on January 9, 1943, a simple ferry hop from Burbank to Muroc Field for testing.[1] Eddie Allen, on loan from Boeing, flew left seat, with Lockheed's own Milo Burcham as copilot. Rudy Thoren and Kelly Johnson were also on board.

Lockheed proposed the model L-249 as a long range bomber. It received the military designation XB-30 but the aircraft was not developed. A plan for a very long-range troop transport, the C-69B (L-349, ordered by Pan Am in 1940),[7] was canceled. A single C-69C, a 43-seat VIP transport, was built in 1945 at the Lockheed-Burbank plant.

The C-69 was mostly used as a high-speed, long-distance troop transport during the war.[8] 22 C-69s were completed before the end of hostilities, and not all of those entered military service. The USAAF cancelled the remainder of the order in 1945.

Postwar Use

TWA L-749A Constellation at Heathrow in 1954 with an under fuselage "Speedpack" freight container
Super Constellation (C-121C) during pilot training in Epinal - Mirecourt, France

After World War II, the Constellation soon came into its own as a popular, fast, civilian airliner. Aircraft already in production for the USAAF as C-69 transports were finished as civilian airliners, with TWA receiving the first on 1 October 1945. The first transatlantic proving flight departed Washington, DC on December 3, 1945, arriving in Paris on December 4, via Gander and Shannon.[1]

Trans World Airlines opened post-war commercial intercontinental air service on February 6, 1946, with a New York-Paris flight in a Constellation. On June 17, 1947, Pan American World Airways opened the first ever regularly-scheduled around-the-world service with their L749 Clipper America. The famous flight Pan Am 101 operated for over 40 years.

As the first pressurized airliner in widespread use, the Constellation helped to usher in affordable and comfortable air travel. Operators of Constellations included TWA, Eastern Air Lines, Pan American World Airways, Air France, BOAC, KLM, Qantas, Lufthansa, Iberia Airlines, Panair do Brasil, TAP Portugal, Trans-Canada Airlines (later renamed Air Canada), Aer Lingus and VARIG.

Initial difficulties

The Constellation airliner had three accidents in the first ten months of service, temporarily curtailing its career as a passenger airliner.[9] On June 18, 1946, the engine of a Pan American aircraft caught fire and fell off. The flight crew made an emergency landing with no loss of life. However, on July 11, a Transcontinental and Western Air aircraft fell victim to an in-flight fire, crashing in a field and taking the lives of five of the six on board.[9] The accidents prompted the suspension of the Constellation's airworthiness certificate until Lockheed could modify the design. This was dramatized in the motion picture The Aviator (2004) during the scene where Howard Hughes (played by Leonardo DiCaprio) surveys numerous grounded TWA Constellations.

The Constellation proved prone to engine failures (due to her R3350s), earning the nickname "World's Finest Trimotor" in some circles.[10]

Records

Sleek and powerful, Constellations set a number of records. On April 17, 1944, the second production L049, piloted by Howard Hughes and TWA president Jack Frye, flew from Burbank, California to Washington, D.C. in 6 hours and 57 minutes (c. 2,300 mi/3,701 km at an average 330.9 mph/532.5 km/h). On the return trip, the aircraft stopped at Wright Field to give Orville Wright his last flight, more than 40 years after his historic first flight. He commented that the Constellation's wingspan was longer than the distance of his first flight.[2]

On September 29, 1957, an L1649A Starliner flew from Los Angeles to London in 18 hours and 32 minutes (approximately 5,420 mi/8,723 km at 292.4 mph/470.6 km/h). The L1649A holds the record for the longest-duration non-stop passenger flight — during TWA's inaugural London to San Francisco flight on October 1–2, 1957, the aircraft stayed aloft for 23 hours and 19 minutes (approximately 5,350 mi/8,610 km at 229.4 mph/369.2 km/h)

Obsolescence

L-1049H freighter of Nordair Canada at Manchester Airport in 1966

The advent of jet airliners, with the de Havilland Comet, Boeing 707, Douglas DC-8 and Convair 880, rendered the piston-engined Constellation obsolete. The first routes lost to jets were the long overseas routes, but Constellations continued to fly domestic routes. The last scheduled passenger flight was made by a TWA L749 on May 11, 1967 from Philadelphia to Kansas City, MO.[11] However, Constellations remained in freight service for years to come, and were used on Eastern Airlines' shuttle service between New York, Washington, and Boston until 1968.

One of the reasons for the elegant appearance of the aircraft was the fuselage shape - a continuously variable profile with no two bulkheads the same shape. Unfortunately, this construction is very expensive and was replaced by the mostly tube-shape of modern airliners. The tube is more resistant to pressurization changes and cheaper to build.

With the shutdown of Constellation production, Lockheed elected not to develop a first-generation jetliner, instead sticking to its lucrative military business and production of the modest turboprop-powered Lockheed L-188 Electra airliner. Lockheed would not build a large civil passenger aircraft again until its L-1011 Tristar debuted in 1972. While a technological marvel, the L-1011 was a commercial failure, and Lockheed left the commercial airliner business permanently in 1983.

Variants

Super Constellation at Charles Prince Airport, Rhodesia (now Zimbabwe) in 1975. Used as a flying club headquarters.

The initial military versions carried the Lockheed designation of L-049; as World War II came to a close, some were completed as civil L-049 Constellations. The first purpose-built passenger Constellation was the more powerful L-649 and L-749 (which had more fuel in the outer wings),[12] L-849 (an unbuilt model to use the R3350 TurboCompound engines adopted for the L-1049), L-949 (an unbuilt, high-density seating-cum-freighter type, what would come to be called a "combi"),[12] followed by the L-1049 Super Constellation (with longer fuselage), L-1149 (proposal to use Allison turbine engines)[12] and L-1249 (similar to L1149, built as R7V-2/YC-121F),[12] L-1449 (unbuilt proposal for L1049G, stretched 55 in (140 cm), with new wing and turbines)[12] and L-1559 (unbuilt project to stretch L-1449 95 in (240 cm)),[12] and L-1649 Starliner (all new wing and L1049G fuselage).[12] Military versions included the C-69 and C-121 for the Army Air Forces/Air Force and the R7O R7V-1 (L-1049G) WV-1 (L-749A) WV-2 (L-1049H) (widely known as the Willie Victor) and many variant EC-121 designations for the Navy [13][14]

Operators

After TWA's initial order was filled following World War II, customers rapidly accumulated, with over 800 aircraft built. In military service, the US Navy and Air Force operated the EC-121 Warning Star variant until 1978, nearly 40 years after work on the L-049 began. Pakistan International Airlines was the first airline from an Asian country to fly the Super Constellation.

Survivors

President Dwight D. Eisenhower flew in two Constellations, named Columbine II and Columbine III.
N4257U on display at the Combat Air Museum in Topeka, Ks.

Specifications (L-1049G Super Constellation)

Lockheed Super Constellation of Lufthansa.
Orthographically projected diagram of the Lockheed L-1049G Constellation.

Data from Great Aircraft of the World[29] and Quest for Performance[30]

General characteristics

Performance

Accidents and incidents

L-049 and C-69

L-649 Constellation

L-749 Constellation

Flight 601

L-1049 Super Connie

L-1649 Starliner

See also

Related development

Comparable aircraft

Related lists

References

Notes
  1. 1.0 1.1 1.2 1.3 Taylor 1993, pp. 606–607.
  2. 2.0 2.1 Yenne 1987, pp. 44–46.
  3. 3.0 3.1 Boyne 1998, pp. 135–137.
  4. Johnson, Clarence L. "Kelly". Kelly: More Than My Share of it All. Washington, DC: Smithsonian Books, 1985. ISBN 0-87474-491-1.
  5. "Lockheed C-69 Constellation." militaryfactory.com, May 25, 2009. Retrieved: July 18, 2009.
  6. Sampson 1985
  7. Stringfellow,Curtis K., and Bowers, Peter M. Lockheed Constellation (Osceola, WI : Motorbooks International, 1992)
  8. Pace 2003, p. 17.
  9. 9.0 9.1 "The Star of Lisbon." Time, June 22, 1946.
  10. Stringfellow and Bowers 1992, p. 120 caption.
  11. Germain 1998, p. 89.
  12. 12.0 12.1 12.2 12.3 12.4 12.5 12.6 Stringfellow and Bowers.
  13. Swanborough, Gordon and Peter M. Bowers. United States Navy Aircraft Since 1911. Annapolis, Marylan: Naval Institute Press, 1976. ISBN 0-87021-968-5.
  14. Fahey, James C. The Ships and Aircraft of the U.S. Fleet, volumes 1-4, 1939-45. Annapolis, Maryland: Naval Institute Press, 1965.
  15. "Lockheed EC-121D Constellation." nationalmuseum.af.mil, National Museum of the Air Force. Retrieved: July 18, 2009.
  16. Pettersen, Ralph M. "Breitling Super Constellation." conniesurvivors.com, May 2004. Retrieved: July 18, 2009.
  17. "Historical Aircraft Restoration Society Super Constellation." hars.org.au.Retrieved: July 18, 2009.
  18. "N6937C Lockheed Super Constellation "Star of America." Airline History Museum at Kansas City.Retrieved: July 18, 2009.
  19. Denning, Larry. "Connie at the Movies." Airline History Museum at Kansas City. Retrieved: July 18, 2009.
  20. "Lockheed L-1049 G Super Constellation" Munich Airport Retrieved: August 31, 2009.
  21. "Lockheed L1649A Starliner, ZS-DVJ, c/n 1042." saamuseum.co.za, The South African Airways Museum Society. Retrieved: July 18, 2009.
  22. Hayles, John. "Science Museum Swindon: Constellation N7777G." aeroflight.co.uk, July 4, 2009. Retrieved: July 18, 2009.
  23. "Lockheed EC-121T Constellation." pimaair.org, Pima Air & Space Museum. Retrieved: July 18, 2009.
  24. "Lockheed EC-121A Constellation." pimaair.org, Pima Air & Space Museum. Retrieved: July 18, 2009.
  25. "Lockheed L-049 Constellation." pimaair.org, Pima Air & Space Museum. Retrieved: July 18, 2009.
  26. , "Lockheed Constellation, A majestade dos ares (in Portuguese). Museum Asas de um Sonho (Portugal). Retrieved: July 18, 2009.
  27. "F-ZVMV c/n 2503." conniesurvivors.com. Retrieved: July 18, 2009.
  28. "Story of F-BGNJ" Amicale du Super Constellation. Retrieved: March 23, 2010.
  29. Cacutt 1989, pp. 314–322.
  30. Loftin, L.K. Jr. Quest for Performance: The Evolution of Modern Aircraft. NASA SP-468. Retrieved: April 22, 2006.
  31. Aviation Safety Network "Accident description: Lockheed Constellation 42-94551." aviation-safety.net, Aviation Safety Network, January 3, 2009. Retrieved: July 18, 2009.
  32. Associated Press, "Four Crewmen Die In Crash of TWA Constellation", The State, Columbia, S.C., Monday 12 May 1947, No. 20,411, page 1-A.
  33. " Constellation, o acidente aéreo que matou 51 (in Portuguese)." Panair do Brasil, October 19, 2008. Retrieved: July 18, 2009.
  34. "Accident description: Lockheed Constellation N2735A." aviation-safety.net, Aviation Safety Network, July 18, 2009. Retrieved: July 18, 2009.
  35. "Accident description: Lockheed Constellation N3737A." aviation-safety.net, Aviation Safety Network, November 11, 2008. Retrieved: July 18, 2009.
  36. "Accident description: Lockheed Constellation N86504." aviation-safety.net, Aviation Safety Network, November 10, 2008. Retrieved: July 18, 2009.
  37. [url=http://aviation-safety.net/database/record.php?id=19510719-0 "Accident description: Eastern Airlines Flight 601."] Aviation Safety Network. Retrieved: March 11, 2010.
  38. "Accident description: Eastern Airlines." Aviation Safety Network. Retrieved: 11 March 2010.
  39. "L-749A 5N85H." Air Britain Archive, Issue 2, 2008. Retrieved: March 25, 2010.
  40. "From Avianca to CanJet: MoBay Airport at Centre of J'can Aviation History." Jamaica Observer, April 22, 2009. Retrieved: April 25, 2009.
  41. "Qantas L-1049G Super Constellation." Aviation Safety Network. Retrieved: September 1, 2010.
  42. "Happy Hours Air Travel Club L-1049." zoggavia.com. Retrieved: September 1, 2010.
Bibliography
  • Boyne, Walter J. Beyond the Horizons: The Lockheed Story. New York: St. Martin's Press, 1998. ISBN 0-31224-438-X.
  • Cacutt, Len, ed. “Lockheed Constellation.” Great Aircraft of the World. London: Marshall Cavendish, 1989. ISBN 1-85435-250-4.
  • Germain, Scott E. Lockheed Constellation and Super Constellation. North Branch, Minnesota: Specialty Press, 1998. ISBN 1-58007-000-0.
  • Marson, Peter J. The Lockheed Constellation Series. Tunbridge Wells, Kent, UK: Air-Britain (Historians), 1982. ISBN 0-85130-100-2.
  • Pace, Steve. X-Planes: Pushing the Envelope of Flight. Osceola, Wisconsin: Zenith Imprint, 2003. ISBN 978-0760315842.
  • Sampson, Anthony. Empires of the Sky: The Politics, Contest and Cartels of World Airlines. London: Hodder and Stoughton, 1985. ISBN 0-340-37668-6.
  • Smith, M.J. Jr. Passenger Airliners of the United States, 1926-1991. Missoula, Montana: Pictorial Histories Publishing Company, 1986. ISBN 0-933126-72-7.
  • Stringfellow, Curtis K. and Peter M. Bowers. Lockheed Constellation: A Pictorial History. St. Paul, Minnesota: Motorbooks, 1992. ISBN 0-87938-379-8.
  • Taylor, Michael J.H., ed. “Lockheed Constellation and Super Constellation.” Jane’s Encyclopedia of Aviation. New York: Crescent, 1993. ISBN 0-517-10316-8.
  • United States Air Force Museum Guidebook. Wright-Patterson AFB, Ohio: Air Force Museum Foundation, 1975.
  • Yenne, Bill, Lockheed. Greenwich, Connecticut: Bison Books, 1987. ISBN 0-51760-471-X.

External links