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Youngman-Baynes High Lift

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Title: Youngman-Baynes High Lift  
Author: World Heritage Encyclopedia
Language: English
Subject: Heston Aircraft Company, Percival Proctor, De Havilland Gipsy Queen, Folland Midge, BAC Strikemaster
Collection: British Experimental Aircraft 1940–1949
Publisher: World Heritage Encyclopedia

Youngman-Baynes High Lift

High Lift
Youngman-Baynes High Lift (VT789), at Heston 1948
Role Experimental aircraft
National origin United Kingdom
Manufacturer Heston Aircraft Company Ltd
Designer L.E. Baynes
First flight 5 February 1948
Retired 1954
Number built 1

The Youngman-Baynes High Lift was a British, experimental aircraft of the 1940s. It was a single-engine, low-wing monoplane with a fixed tailwheel undercarriage.


  • Development 1
  • Operational history 2
  • Specifications 3
  • See also 4
  • References 5


The High Lift was a "one-off" experimental, flying test-bed for the system of slotted flaps invented by R.T. Youngman. It was designed by L.E. Baynes, using components from the Percival Proctor, and built by Heston Aircraft Company Ltd. R. Munday piloted the first flight at Heston Aerodrome on 5 February 1948, carrying the military serial VT789.

Operational history

The High Lift was registered as G-AMBL on 10 May 1950.[1] Its career ended in 1954 when it was presented to the College of Aeronautics at Cranfield.


Data from [2]

General characteristics
  • Crew: 2
  • Length: 29 ft 0 in (8.84 m)
  • Wingspan: 33 ft 0 in (10.06 m)
  • Empty weight: 2380 lb (1080 kg)
  • Gross weight: 3500 lb (1588 kg)
  • Powerplant: 1 × de Havilland Gipsy Queen 32 six-cylinder inline piston engine, 250 hp (187 kW)


  • Maximum speed: 180 mph (289 km/h)

See also

Related development


  1. ^ United Kingdom Civil Aviation Authority Aircraft Register entry for G-AMBL
  2. ^ Jackon 1974, p. 337
  • Jackson, A.J. (1974). British Civil Aircraft since 1919 Volume 3. London: Putnam.  
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