de Havilland Gipsy Queen

The de Havilland Gipsy Queen is a British six-cylinder aero engine of 9.2 litres (560 cu in) capacity that was developed in 1936 by the de Havilland Engine Company. It was developed from the de Havilland Gipsy Six for military aircraft use.[1] Produced between 1936 and 1950 Gipsy Queen engines still power vintage de Havilland aircraft types today.

Gipsy Queen
A de Havilland Gipsy Queen 70-4 at the Royal Air Force Museum Cosford
Type Piston inline aero engine
Manufacturer de Havilland Engine Company
First run 1936
Major applications de Havilland Dragon Rapide
Number built c.5,000
Developed from de Havilland Gipsy Six



Gipsy Queen I
(1936) 205 hp (153 kW), military version of Gipsy Six II. Splined crankshaft, but intended for fix-pitch airscrews fitted with an adapter. No fittings for a VP airscrew fitted. Very limited production.
Gipsy Queen II
(1936) 210 hp (160 kW), military version of the Gipsy Six Series II. Strengthened crankcase. Splined crankshaft for V/P airscrew.
Gipsy Queen III
(1940) 200 hp (150 kW), military version of Gipsy Six, strengthened crankcase, tapered crankshaft for fixed-pitch;-1,358 built. Most of these engines were fitted with a very basic top-cover, as per the early Gipsy-Six, with no accessory drives at the rear of the top-cover whatsoever.
Gipsy Queen IV
(1941) Supercharged version, originally designated Gipsy Queen IIIS, designated Gipsy Queen 50 in June 1944. Only a handful were made. This engine was widely advertised at the time, however, it never entered production, as it was superseded by the completely re-engineered Queen 30.
Gipsy Queen 30; All-new engine from this point. (120 mm x 150 mm = 10.18 L)[3]
(1946) 240 hp (180 kW), 1,762 built.
Gipsy Queen 30-2
(1946) 240 hp (180 kW).
Gipsy Queen 30-3
(1946) 240 hp (180 kW).
Gipsy Queen 30-4
(1946) 240 hp (180 kW).
Gipsy Queen 32
(1946) 250 hp (190 kW).
Gipsy Queen 33
As Gipsy Queen 30 for pusher installation.
Gipsy Queen 34
As Gipsy Queen 30.
Gipsy Queen 50
(1944) 295 hp (220 kW), Single-speed, single stage supercharger. 14 built.
Gipsy Queen 51
295 hp (220 kW), as Gipsy Queen 50.
Gipsy Queen 70-1
(1946) Renamed Gipsy Six S.G, 1,889 built. Supercharged with reduction-drive.
Gipsy Queen 70-2
380 hp (280 kW)3. Supercharged with reduction-drive.
Gipsy Queen 70-3
380 hp (280 kW). Supercharged with reduction-drive.
Gipsy Queen 70-4
340 hp (250 kW). Supercharged with reduction-drive.
Gipsy Queen 71
(1950) 330 hp (250 kW). Supercharged with reduction-drive.



Of the 11 Gipsy Queen-powered de Havilland Doves on the British register, only two remain airworthy as of April 2011.[4]

A Gipsy Queen II powered 1936 Percival Mew Gull (G-AEXF) is owned and operated by The Shuttleworth Collection at Old Warden in the UK, and flies regularly at home, and limited away airshows, subject to serviceability.[5]

Engines on display

Preserved de Havilland Gipsy Queen engines are on public display at the following museums:

Specifications (Gipsy Queen I)

Data from Lumsden [6]

General characteristics

  • Type: 6-cylinder inverted inline piston engine
  • Bore: 4.646 in (118 mm)
  • Stroke: 5.512 in (140 mm)
  • Displacement: 560.6 cu in (9.186 L)
  • Length: 63.5 in (1,587 mm)
  • Width: 20.5 in (513 mm)
  • Height: 33.5 in (838 mm)
  • Dry weight: 486 lbs (220 kg)


  • Valvetrain: Overhead valve
  • Fuel type: 87 octane petrol
  • Oil system: Dry sump
  • Cooling system: Air-cooled


See also

Related development

Comparable engines

Related lists



  1. Janes 1989, p. 275.
  2. List from Lumsden 2003, pp. 145-146
  3. Gunston 1999, pp. 139
  4. CAA G-INFO DH.104 Retrieved: 21 April 2011
  5. Percival Mew Gull - Shuttleworth Retrieved 23 March 2017
  6. Lumsden 2003, p.145.


  • Jane's Fighting Aircraft of World War II. London. Studio Editions Ltd, 1989. ISBN 0-517-67964-7
  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
  • Gunston, Bill. Development of Piston Aero Engines. Patrick Stephens Limited, 1999. ISBN 978-1-85260-619-0.
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