词条 | Folland Midge | |||||||||||||||||||
释义 |
The Folland Midge was a small, swept-wing British subsonic light fighter aircraft originally developed as a concept demonstrator for the successful Folland Gnat. Design and developmentThe Midge and Gnat were the creation of W.E.W. "Teddy" Petter, a British aircraft designer who had gained wide recognition for his design of the English Electric Canberra bomber and Lightning supersonic interceptor. Petter had grown suspicious of the trend towards bigger and more expensive combat aircraft, and he felt that a small, simple fighter would offer the advantages of low purchase and operational costs. New lightweight turbojet engines were being developed that would be able to power such small fighters.[1] Petter was unable to pursue this vision at English Electric, so he left to become managing director and chief designer of Folland Aircraft. In 1951, using company funds, he began work on his lightweight fighter concept, which was designated the "Fo-141 Gnat". The Gnat was to be powered by a Bristol BE.22 Saturn turbojet with 3,800 lbf (16.9 kN 1,724 kgp) thrust. However, the Saturn was cancelled, and so Petter's unarmed proof-of-concept demonstrator for the Gnat was powered by the less powerful Armstrong Siddeley Viper 101 with 1,640 lbf (7.3 kN / 744 kgp) thrust. The demonstrator was designated Fo-139 "Midge". The Midge, serial number G-39-1, first flew on 11 August 1954 from Boscombe Down, Wiltshire, with Teddy Tennant at the controls, and proved to be an excellent aircraft.[1] The Midge had a number of advanced features, such as hydraulically powered "flaperons", main landing gear that could be used as airbrakes, and a one-piece canopy that hinged over an inner armoured windscreen. Despite the low-powered engine, the little jet could break Mach 1 in a dive and was very agile.[1] The Midge was evaluated by pilots from Canada, India, Jordan, New Zealand, and the US Air Force, and was almost universally praised. The Midge had performed a total of 220 flights when it was destroyed in a fatal crash on 26 September 1955, with a Swiss pilot at the controls.[2] However, the Midge had demonstrated that Petter's lightweight fighter concept had much going for it. Folland went on to develop a full-scale Gnat prototype, also using company funds.[1] Original film footage of the Midge can be seen in the 1956 British science fiction film Satellite in the Sky. The Midge portrays a fictional jet fighter used to test an experimental rocket fuel. Specifications{{Aircraft specifications|plane or copter?=plane |jet or prop?=jet |ref=The Encyclopedia of World Aircraft[3] |crew=one |length main=28 ft 9 in |length alt=8.76 m |span main=20 ft 8 in |span alt=6.30 m |height main=9 ft 3 in |height alt=2.82 m |area main=125 ft² |area alt=11.61 m² |empty weight main= |empty weight alt= |loaded weight main= |loaded weight alt= |max takeoff weight main=4,500 lb |max takeoff weight alt=2,041 kg |engine (jet)=Armstrong Siddeley Viper 101 |type of jet=turbojet |number of jets=1 |thrust main=1,640 lbf |thrust alt=7,295 N |max speed main=600 mph |max speed alt=966 km/h |range main= |range alt= |ceiling main=40,000 ft |ceiling alt=12,191 m |climb rate main= |climb rate alt= |loading main= |loading alt= |thrust/weight= |avionics= |guns= |bombs= }} See also{{Aircontent|related=
|similar aircraft=
|lists= |see also= }} Notes1. ^1 2 3 The Folland Gnat / HAL Ajeet {{webarchive |url=https://web.archive.org/web/20100612133807/http://www.vectorsite.net/avgnat.html |date=12 June 2010 }}, Greg Goebel's Vectorsite. 2. ^"The Midge Accident" Flight 7 October 1955 3. ^General Editor: David Donald. The Encyclopedia of World Aircraft. Etobicoke, Ontario, Canada: Prospero Books, 1998. {{ISBN|1-894102-24-X}}. References
External links{{commons category|Folland Aircraft}}
4 : British experimental aircraft 1950–1959|Folland aircraft|Single-engined jet aircraft|Aircraft first flown in 1954 |
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