Douglas C-133 Cargomaster

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C-133 Cargomaster
C-133b-sanfrancsiscobay.jpg
Douglas C-133B Cargomaster, AF Ser. No. 59-0529 (1501st Air Transport Wing), over San Francisco Bay
Role Military transport aircraft
National originUnited States
Manufacturer Douglas Aircraft Company
First flight23 April 1956
Retired1971 (USAF)
Primary users United States Air Force
NASA
Produced1956–1961
Number built50

The Douglas C-133 Cargomaster is an American large turboprop cargo aircraft built between 1956 and 1961 by the Douglas Aircraft Company for use with the United States Air Force. The C-133 was the USAF's only production turboprop-powered strategic airlifter, entering service shortly after the Lockheed C-130 Hercules, which is designated a tactical airlifter. It provided airlift services in a wide range of applications, being replaced by the C-5 Galaxy in the early 1970s.

Contents

Design and development

The C-133 was designed to meet the requirements for the USAF's Logistic Carrier Support System SS402L for a new strategic transport. [1] The aircraft differed considerably from the C-74 Globemaster and C-124 Globemaster IIs that had preceded it. A high-mounted wing, external blister fairings on each side for the landing gear, and rear-loading and side-loading doors ensured that access to, and the volume of, the large cargo compartment were not compromised by these structures. The cargo compartment (90 ft/27 m in length and 12 ft/3.7 m high) was pressurized, heated, and ventilated. [2]

C-133A of 436 MAW Military Airlift Command at RAF Lakenheath England in 1969 Douglas C-133A 56-2010 MILD 17.05.69 edited-2.jpg
C-133A of 436 MAW Military Airlift Command at RAF Lakenheath England in 1969

The Cargomasters went directly into production as C-133A; no prototypes were built. The first Cargomaster flew on 23 April 1956. [3] The first C-133As were delivered to the Military Air Transport Service (MATS) in August 1957 and began flying MATS air routes throughout the world. Two C-133s established transatlantic speed records for transport aircraft on their first flights to Europe. The fleet of 50 aircraft proved itself invaluable during the Vietnam War. The Cargomaster soldiered on until the Lockheed C-5 Galaxy entered service in the early 1970s. The C-133 was then retired and most airplanes were cut up within months of being delivered to Davis-Monthan Air Force Base, Tucson, Arizona, after their final flights in 1971.

Fifty aircraft (35 C-133A and 15 C-133B) were constructed and put into service with the USAF. [4] A single C-133A and a C-133B were built and kept at Douglas Long Beach as "test articles". They had no construction numbers or USAF tail numbers.

The C-133 had large tail doors and side doors and a large, open cargo area. The C-133A carried many large and heavy loads, including Atlas and Titan ICBMs, although it was not designed specifically to transport ICBMs. It may, indeed, have been the reverse. The C-133 design was frozen by 1955 in order to build the airplanes that first flew in April 1956. The designs of both the Atlas and Titan were not firm until after 1955, when their contracts were signed. With the C-133B, the rear cargo doors were modified to open to the side (petal doors), making ICBM loading much easier. Air transporting the ballistic missiles such as the Atlas, [4] Titan and Minuteman was much less expensive, safer and faster than road transport. Several hundred Minuteman and other ICBMs were airlifted to and from their operational bases by C-133s. The C-133 also transported Atlas, Saturn and Titan rockets to Cape Canaveral for use as launch boosters in the Gemini, Mercury and Apollo space programs. After the Apollo capsules splashed down, they were airlifted in C-133s from Naval Station Norfolk, Virginia, or Hickam AFB, Hawaii, to Ellington AFB, Texas, or to California.

Operational history

Preserved C-133A Douglas C-133A Cargomaster USAF.jpg
Preserved C-133A
C-133B Cargomaster N77152 of the Foundation for Airborne Relief at Tucson Airport Arizona in 1973 still wearing MAC markings Douglas C-133B N77152 FAR Tucson 12.10.73 edited-3.jpg
C-133B Cargomaster N77152 of the Foundation for Airborne Relief at Tucson Airport Arizona in 1973 still wearing MAC markings

The C-133 was for many years the only USAF aircraft capable of hauling very large or very heavy cargo. Despite the Douglas C-124 Globemaster II's capabilities, there was much cargo that it could not carry because of its configuration with a cargo deck 13 ft (4 m) off the ground and its lower, though substantial, engine power. The C-133 continued in service after the formation of the USAFs Military Airlift Command on 1 January 1966.

By 1971, shortly before the introduction of the Lockheed C-5 Galaxy, the Cargomaster was obsolete as well as being worn out, and all were withdrawn from service. The C-133 had a 10,000-hour airframe that was life-extended to 19,000 hours. Severe vibration caused critical stress corrosion of the airframes to the point that the aircraft were beyond economical operation. The Air Force managed to keep as many of the C-133 fleet in service as possible until the C-5 entered squadron service.

C-133s set a number of unofficial records, including records for military transport aircraft on trans-Atlantic and trans-Pacific routes. Among the longest were non-stop flights from Tachikawa Airfield, Japan, to Travis Air Force Base, California (17:20 hours on 22 May 1959, 5,150 mi/8,288 km, 297.2 mph/478.3 km/h), and Hickam Air Force Base, Hawaii, to Dover Air Force Base, Delaware, in about 16 hours (4,850 mi/7,805 km 303.1 mph/487.8 km/h). The only FAI officially sanctioned record was in December 1958, when C-133A 62008 lifted a payload of 117,900 lb (53,480 kg) to an altitude of 10,000 ft (3,048 m) at Dover Air Force Base, Delaware.

Operators

Data from:C-133 units, [5] C-133 Tail Numbers [6]

Flag of the United States.svg  United States

Accidents and incidents

Early in its life-cycle the airplane developed a reputation of crashing. Crew members referred to it as a "widowmaker". Some would not fly in the C-133, since the cause of the crashes was unknown. Several issues were discovered after crash investigations. The first issue was with the auto-pitch controller on the propellers. A time delay was added to relieve stress on the nose casing. The second issue was that the stall characteristics gave little warning to the crew. The left wing was found to stall before the right wing. The fix was simple, a small strip of metal was attached to the right wing causing it to stall simultaneously with the left wing. As the aircraft neared the end of its 10,000-hour life-cycle the last C-133B crash occurred on 6 February 1970. It was determined the airframe split at the cargo door. The final fix was a band around the airframe to strengthen; the end of the C-133 was near. The C-5A Galaxy debuted in 1971 and marked the end of the C-133. Of 50 aircraft built, nine were lost in crashes and one was destroyed in a ground fire. [6] [7]

13 April 1958
AF Serial No. 54-0146, 1607 ATW — Destroyed 13 April 1958, crashed 26 mi (23 nmi; 42 km) south of Dover AFB, Delaware in Ellendale, Delaware. [8]
10 June 1961
AF Serial No. 57-1614, 1501 ATW — Destroyed 10 June 1961, crashed into the Pacific Ocean off Japan [9]
27 May 1962
AF Serial No. 57-1611, 1607 ATW — Destroyed 27 May 1962, crashed into water near Shad Intersection (37° 43' N 73° W), [10] east of Dover AFB, Delaware. [11]
10 April 1963
AF Serial No. 59-0523, 1501 ATW — Destroyed 10 April 1963, crashed while in traffic pattern, Travis AFB, California [12] [13]
13 July 1963
AF Serial No. 56-2005, 1607 ATW — Destroyed 13 July 1963 during refuelling ground fire, Dover AFB, Delaware. [14]
22 September 1963
AF Serial No. 56-2002, 1607 ATW — Destroyed 22 September 1963, crashed into Atlantic Ocean near Shad Intersection (37° 43' N 73° W), [10] southeast of Dover AFB, Delaware; aircraft apparently stalled near top of climb to cruising altitude. [15]
7 November 1964
AF Serial No. 56-2014, 1607 ATW — Destroyed 7 November 1964 in crash on takeoff at CFB Goose Bay, Labrador. Probable cause was a power stall on takeoff due to icing or possibly aerodynamic instability of the aircraft. [16]
11 January 1965
AF Serial No. 54-0140, 1607 ATW — Destroyed 11 January 1965, crashed into water after takeoff from Wake Island. [17]
30 April 1967
AF Serial No. 59-0534, 1501 ATW — Destroyed 30 April 1967, ditched off the east coast of Okinawa, Japan after propeller pitch became fixed, due to electrical problems in either propeller control or propeller power circuits. [18]
6 February 1970
AF Serial No. 59-0530, 60 MAW — Destroyed 6 February 1970, disintegrated in flight over southwestern Nebraska, due to catastrophic propagation of old 11 in (280 mm) skin crack hidden under paint to a total length of 17 ft (5.2 m); large sections of skin peeled off and the aircraft came apart at 23,000 ft (7,000 m). [19] [20]

Surviving aircraft

C-133A Cargomaster 56-2008 at the National Museum of the United States Air Force C-133 Cargomaster NMUSAF.jpg
C-133A Cargomaster 56-2008 at the National Museum of the United States Air Force
C-133B Cargomaster 59-0527 on display at the Pima Air & Space Museum. Douglas C-133 Cargomaster BuNo 59-0527.jpg
C-133B Cargomaster 59-0527 on display at the Pima Air & Space Museum.
C-133A AF Ser. No. 56-2008
Preserved at the National Museum of the United States Air Force at Wright-Patterson Air Force Base near Dayton, Ohio. On 16 December 1958, this aircraft established a world record for propeller-driven aircraft by carrying a payload of 117,900 lb (53,500 kg) to an altitude of 10,000 ft (3,000 m). It was flown to the museum on 17 March 1971. [4]
C-133B AF Ser. No. 59-0527
In the collection of the Pima Air & Space Museum adjacent to Davis–Monthan Air Force Base in Tucson, Arizona.
C-133B AF Ser. No. 59-0536
Located at the Air Mobility Command Museum at Dover Air Force Base, Delaware. This aircraft had previously been at the Strategic Air Command Museum at Offutt Air Force Base, Nebraska for many years and was donated to the AMC Museum when the SAC Museum moved from its on base location in the late 1990s to its new location near Ashland, Nebraska.
C-133B Cargomaster 59-0536 on display at the Air Mobility Command Museum. C133.jpg
C-133B Cargomaster 59-0536 on display at the Air Mobility Command Museum.
C-133A AF Ser. No. 56-1999
N199AB, previously owned by Cargomaster Corporation, was never certificated by the Federal Aviation Administration for civilian operation, and could only be flown as a government aircraft, mostly for the State of Alaska. N199AB was based at ANC and was flown as a transport until 2004, carrying cargo, such as pipeline sections. It also flew frontend loader trash trucks and heavy equipment to the Alaskan bush, i.e., Point Hope, Point Lay, Wainright, Barrow, Deadhorse, Barter Island, and Anatovich Pass in April 2006. In August 2008, it flew its last flight to the Jimmy Doolittle Air & Space Museum at Travis Air Force Base, Fairfield, California, where it has been restored to USAF markings and maintained on static display.

Specifications (C-133B)

3-view line drawing of the Douglas C-133A Cargomaster Douglas C-133A Cargomaster 3-view line drawing.png
3-view line drawing of the Douglas C-133A Cargomaster

Data from American military transport aircraft since 1925 [21]

General characteristics

Performance

See also

Aircraft of comparable role, configuration, and era

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References

  1. ↑ Norton, Bill (March 2004). "Forgotten Airlifter: The Short-Lived Douglas C-133 Cargomaster". Air Enthusiast . Stamford, Lincs: Key Publishing (110): 45–53. ISSN   0143-5450.
  2. ↑ "Latest Flying Freighter Can Carry 200 Troops". Popular Mechanics: 109. April 1956.
  3. ↑ Francillon, René J. (1988). McDonnell Douglas aircraft since 1920 Vol. 1. London: Putnam. pp. 509–512. ISBN   0-851778275.
  4. 1 2 3 "Douglas C-133A Cargo Master". National Museum of the US Air Force™. Retrieved 17 March 2018.
  5. ↑ Taylor, Cal. "C-133 Units". www.angelfire.com. Retrieved 17 March 2018.
  6. 1 2 Taylor, Cal. "C-133 Tail numbers". www.angelfire.com. Retrieved 17 March 2018.
  7. ↑ John Sotham (September 2010). "The Curse of the Cargomaster". Air & Space/Smithsonian .
  8. ↑ Ranter, Harro. "ASN Aircraft accident Douglas C-133A Cargomaster 54-0146 Georgetown, DE". aviation-safety.net. Retrieved 17 March 2018.
  9. ↑ Ranter, Harro. "ASN Aircraft accident Douglas C-133A-35-DL Cargomaster 57-1614 Tachikawa AB, Japan". aviation-safety.net. Retrieved 17 March 2018.
  10. 1 2 The Code of Federal Regulations of the United States of America. U.S. Government Printing Office. 1961. p. 225.
  11. ↑ Ranter, Harro. "ASN Aircraft accident Douglas C-133A-35-DL Cargomaster 57-1611 Dover AFB, DE, USA". aviation-safety.net. Retrieved 17 March 2018.
  12. ↑ "The Crash of the C-133B near Travis AFB, CA". Check-Six.com. Retrieved 21 July 2013.
  13. ↑ Ranter, Harro. "ASN Aircraft accident Douglas C-133B-DL Cargomaster 59-0523 Fairfield-Travis AFB, CA (SUU)". aviation-safety.net. Retrieved 17 March 2018.
  14. ↑ Ranter, Harro. "ASN Aircraft accident Douglas C-133A Cargomaster 56-2005 Dover AFB, DE (DOV)". aviation-safety.net. Retrieved 17 March 2018.
  15. ↑ Ranter, Harro. "ASN Aircraft accident Douglas C-133A Cargomaster 56-2002 Cape May, NJ, USA". aviation-safety.net. Retrieved 17 March 2018.
  16. ↑ Ranter, Harro. "ASN Aircraft accident Douglas C-133A-30-DL Cargomaster 56-2014 Goose Bay Airport, NL (YYR)". aviation-safety.net. Retrieved 17 March 2018.
  17. ↑ Ranter, Harro. "ASN Aircraft accident Douglas C-133A-5-DL Cargomaster 54-0140 Wake Island AFB (AWK)". aviation-safety.net. Retrieved 17 March 2018.
  18. ↑ Ranter, Harro. "ASN Aircraft accident Douglas C-133B-DL Cargomaster 59-0534 Okinawa". aviation-safety.net. Retrieved 17 March 2018.
  19. ↑ "Last of the Giants… Near Palisade, Nebraska". Check-Six.com. Retrieved 9 October 2016.
  20. ↑ Ranter, Harro. "ASN Aircraft accident Douglas C-133B-DL Cargomaster 59-0530 Palisade, NE". aviation-safety.net. Retrieved 16 March 2018.
  21. ↑ Johnson, E.R.; Jones, Lloyd S. (2013). American military transport aircraft since 1925. McFarland & Company, Inc. pp. 222–226. ISBN   978-0-7864-6269-8.

Further reading

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