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|The Dash 80 flying|
|First flight||July 15, 1954|
|Status||On display, Steven F. Udvar-Hazy Center, Smithsonian Air and Space Museum|
|Unit cost||US$16 million|
|Developed into|| Boeing KC-135 Stratotanker |
Design and development
Two things made Boeing think about making a jet airliner. The first reason was because of the Boeing B-47 Stratojet. The second reason was because of the world's first jet airliner, the de Havilland Comet.
In 1950 Boeing made some details on a jet airliner which they called the Model 473-60C. Airlines were not sure about jet planes because they successful with propeller planes like the Douglas DC-4, DC-6, Boeing Stratocruiser and Lockheed Constellation.
Boeing had sold a lot of planes to the military but they were not very successful with airlines. Douglas was the most successful airliner maker at the time. Boeing thought that the only way to get airlines to buy a jet plane was to show them one.
Boeing wanted its jets to have different model numbers from its propeller planes. The names of the propeller planes all started with 300. The numbers 400, 500 and 600 were used by missiles and other things, so Boeing made the model number of the jets 700. The first jet would be the 707.
The Dash 80 was 132 inches (3.35 m) wide. Boeing wanted to make the 707's fuselage 144 inches (3.66 m) wide. By the time the 707 was made, its fuselage was 148 inches (3.76 m) in diameter. The decision to change it did not make many delays, because the Dash 80 was mostly made by hand.
The Dash 80 was finished on May 15, 1954, which was 18 months after the making started.
Some problems were found with the engines and brakes. The brakes once completely failed when the plane landed, so it went over the runway.
The barrel roll
People from Aircraft Industries Association (AIA) and International Air Transport Association (IATA) came to the 1955 Seafair and Gold Cup Hydroplane Races on August 6, 1955. The Dash 80 was supposed to make a simple flight above them, but the Boeing test pilot did two barrel rolls instead.
Use as a test aircraft
The Dash 80 was put in storage in 1969. On May 26, 1972 Boeing gave the Dash 8- to the Smithsonian Air and Space Museum. For 18 years the plane was in a "desert boneyard" in Arizona. Boeing took it back and restored it. The Dash 80's last flight was to Dulles International Airport near Washington, D.C. on August 27, 2003. It was painted in its first ever colours and it was sent to the Steven F. Udvar-Hazy Center, which is near Dulles Airport in Chantilly, Virginia.
Data from Boeing Aircraft since 1916General characteristics
- Crew: 3
- Length: 127 ft 10 in (39.97 m)
- Wingspan: 129 ft 8 in (39.88 m)
- Height: 38 ft (11.59 m)
- Wing area: 2,400 ft² (223 m²)
- Empty weight: 92,120 lb (41,870 kg)
- Loaded weight: 190,000 lb (86,360 kg)
- Powerplant: 4 × Pratt & Whitney JT3 turbojets, 10,000 lbf (44.5 kN) each
- Maximum speed: 582 mph (506 knots, 937 km/h) at 25,000 ft (7,600 m)
- Cruise speed: 550 mph (478 knots, 886 km/h)
- Range: 3,530 mi (3,070 nmi, 5,683 km)
- Service ceiling: 43,000 ft (13,110 m)
- Rate of climb: 2,500 ft/min (12.7 m/s)
- Aircraft related to this one
- Similar aircraft
- The contention that the maneuver was dangerous was refuted by Johnston himself. "It's a one-g maneuver. It's absolutely nonhazardous, but it's very impressive," explained Johnston to Allen. Other big four-engine jet aircraft have since done barrel rolls.
- Irving 1994, p. 166.
- "Boeing 367-80." National Air and Space Museum, Smithsonian Institution, 2004. Retrieved: February 22, 2007.
- Irving 1994, pp. 167–169.
- Irving 1994, p. 171.
- "707 Family." Boeing. Retrieved: April 3, 2010.
- Thompson, R.G. "Dash 80 The story of the prototype 707." Air & Space Magazine, May 1, 1987. Retrieved: April 3, 2010.
- Irving 1994, p. 173.
- Irving 1994, p. 179.
- "Video interview with Tex Johnston about barrel roll." aviationexplorer.com. Retrieved: April 3, 2010.
- "It's Possible to Roll This Airplane." Flying Magazine, Vol. 135, No. 5, May 2008, p. 48.
- Wallace, James. "After 40 years at Boeing, chief test pilot John Cashman is retiring." seattlepi.nwsource.com, January 12, 2007. Retrieved: April 4, 2009.
- Pither 1998, p. 13.
- Hanser, Kathleen and Claire Brown. "Historic Boeing Dash 80 Aircraft Makes Final Flight to Dulles for Display at National Air and Space Museum's Companion Facility, the Steven F. Udvar-Hazy Center." Smithsonian Institute. Retrieved: April 3, 2010.
- Bowers 1989, p. 432.
- Bowers, Peter M. Boeing aircraft since 1916. London: Putnam Aeronautical Books, 1989. ISBN 0-85177-804-6.
- Irving, Clive. Wide Body: The Making of the Boeing 747. Philadelphia: Coronet, 1994. ISBN 0-340-59983-9.
- Tony Pither. The Boeing 707 720 and C-135. Tonbridge, Kent, UK: Air-Britain (Historians) Ltd, 1998. ISBN 0-85130-236-X
- Wilson, Stewart. Airliners of the World. Fyshwick, Australia: Aerospace Publications Pty Ltd., 1999. ISBN 1-875671-44-7.