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Folland Midge

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Title: Folland Midge  
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Subject: Armstrong Siddeley Adder, Royal Air Force, List of accidents and incidents involving military aircraft (1950–54)
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Folland Midge

Role Fighter
National origin United Kingdom
Manufacturer Folland Aircraft
Designer W.E.W. Petter
First flight 11 August 1954
Number built One
Developed into Folland Gnat

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 development

The 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 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.


Data from The Encyclopedia of World Aircraft[3]

General characteristics


See also

Related development
Aircraft of comparable role, configuration and era


  1. ^ a b c d The Folland Gnat / HAL Ajeet, 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.


  • Folland Midge
  • Gnat Mk 1
  • Folland Midge and Gnat

The initial version of this article was based on a public domain article from .

External links

  • magazine, 1954FlightFlightglobal 1954 (pdf) Image of Folland Midge,
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