De Havilland Gipsy Queen

The de Havilland Gipsy Queen is a British six-cylinder aero engine of 9.2 L 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. Produced between 1936 and 1950 Gipsy Queen engines still power vintage de Havilland aircraft types today.

Variants
Note:
 * Gipsy Queen I
 * (1936) 205 hp, 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, military version of the Gipsy Six Series II. Strengthened crankcase. Splined crankshaft for V/P airscrew.


 * Gipsy Queen III
 * (1940) 200 hp, 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 This engine was widely advertised at the time, however, it never entered production, as it was superseded by the completely re-engineered Queen 30.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)
 * (1946) 240 hp, 1,762 built.


 * Gipsy Queen 30-2
 * (1946) 240 hp.


 * Gipsy Queen 30-3
 * (1946) 240 hp.


 * Gipsy Queen 30-4
 * (1946) 240 hp.


 * Gipsy Queen 31
 * (1946) 205 hp. ref=Flight |


 * Gipsy Queen 32
 * (1946) 250 hp.


 * Gipsy Queen 33
 * As Gipsy Queen 30 for pusher installation.


 * Gipsy Queen 34
 * As Gipsy Queen 30.


 * Gipsy Queen 50
 * (1944) 295 hp, Single-speed, single stage supercharger. 14 built.


 * Gipsy Queen 51
 * 295 hp, 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 hp3. Supercharged with reduction-drive.


 * Gipsy Queen 70-3
 * 380 hp. Supercharged with reduction-drive.


 * Gipsy Queen 70-4
 * 340 hp. Supercharged with reduction-drive.


 * Gipsy Queen 71
 * (1950) 330 hp. Supercharged with reduction-drive.

UK Ministry of Defence designation of Gipsy Queen 30-2
 * Gipsy Queen 136

Applications
• Breda Ba.44

• Cierva W.9

• Fiat G.46 bis and G.46-2

• de Havilland Dove

• de Havilland Dragon Rapide

• de Havilland Heron

• Handley Page Marathon

• Heston A.2/45

• Miles Mentor

• Miles Merchantman

• Parnall Heck

• Parnall 382

• Percival Merganser

• Percival Prentice

• Percival Proctor

• Planet Satellite

• Scottish Aviation Pioneer

• Short Sealand

• Youngman-Baynes High Lift

Surviving engines
Of the 11 Gipsy Queen-powered de Havilland Doves on the British register, only two remain airworthy.

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.

Engines on display
A preserved de Havilland Gipsy Queen engine is on public display at the Royal Air Force Museum Cosford.

A de Havilland Gipsy Queen 30 in on display at the de Havilland Aircraft Museum.