|Role||Single-seat light aircraft|
The D.31 Turbulent was designed to be amateur-built and is a single-seat ultra-light aircraft with cantilever low-wing and fixed tailwheel landing gear. Designed to be powered by a 30hp (1200cc) Volkswagen or similar engine. The fuselage uses wood construction. Rollason Aircraft & Engines Limited produced 29 factory-built D.31 aircraft in the United Kingdom and three D.31A models with strengthened wing spar in order to get a full British certificate of Airworthiness. Five Turbulents are operated by the Tiger Club in 2008.
Reviewers Roy Beisswenger and Marino Boric described the design in a 2015 review, saying, "the controls are wonderfully light, and although not aerobatic, the aircraft has been used by the Tiger Club Display Team for formation flying displays in the UK."
- Original design and prototypes
- powered by 25 hp (19 kW) Ava 4A-00
- Standard home-built and factory built variant
- Factory & homebuilt aircraft incorporating factory designed (Rollason of Croydon) strengthened main spar to allow C of A certification. Top speed = 115 Knots. Max weight = 317 kg
- powered by Sarolea Epervier
- powered by Porsche
- Crew: 1
- Length: 17 ft 4½ in (5.30 m)
- Wingspan: 21 ft 5 in (6.53 m)
- Empty weight: 349 lb (158 kg)
- Gross weight: 620 lb (281 kg)
- Powerplant: 1 × Volkswagen, 30 hp (22 kW)
- Maximum speed: 125 mph (201 km/h)
- Rate of climb: 400 ft/min ( m/s)
- Aircraft of comparable role, configuration and era
- Sport Aviation. December 1960. Missing or empty
- Air Trails: 78. Winter 1971. Missing or empty
- Bob Hege (Winter 1969). "That thing in the basement". Air Progress: 10.
- Tiger Club Druine Turbulent page[permanent dead link] Retrieved: 25 February 2008
- Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 107. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
- Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 113. Flying Pages Europe SARL, 2015. ISSN 1368-485X
- Simpson, Rod (2001). Airlife's World Aircraft. Shrewsbury: Airlife Publishing Ltd. ISBN 1-84037-115-3.
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