Polish Aviation Museum

31-864 Kraków,
al. Jana Pawła II 39
phone: (12) 640 99 60,
(12) 642 40 70
e-mail: info@muzeumlotnictwa.pl

a cultural institution of the Malopolska Region

Małopolska – Kraków Region


Mecenas Muzeum

Kraków Airport

Instytut Techniczny Wojsk Lotniczych - sponsor restauracji samolotu Caudron  CR.714 Cyclone


Patroni Medialni

Skrzydlata Polska



Aircraft engine: Rolls-Royce Kestrel IIS

Rolls-Royce Kestrel IIS
Great Britain
inline engine
1930



Configuration12-cylinder V
Coolingliquid-cooled
Displacement21.2 l (1,281 cu in)
Compression ratio6.0
Propeller reduction gear ratio0.55
Weight420 kg (926 lb)
Maximum power525 hp at 3,000 RPM
Climb power475 hp at 2,500 RPM

A British engine that powered prototypes of Luftwaffe aircraft.

The Kestrel was designed in 1926 at the Rolls–Royce works as the first of the new generation of engines of that company with cast cylinder blocks. The carburettor was placed in front of the booster. The Kestrel was subsequently upgraded into RR Goshawk and RR Peregrine and a bit larger RR Buzzard, finally to be succeeded by the legendary Merlin. The Kestrel was used in the Hawker Hart, Hawker Demon, Hawker Fury, Hawker Nimrod and Handley Page Heyford aircraft.

In Germany in the early 1930s the BMW-VI engine used to power new military aircraft was found to be unsatisfactory, and new engine types were not yet available. Therefore a batch of ten Rolls-Royce Kestrel engines was bought. They were used to power the prototype of the Junkers Ju 87 dive bomber (Ju 87 V1) and Messerschmitt Bf 109 fighter (Bf 109 V1). In the museum's archives there's a receipt for the purchase of the Kestrels. The engine on display comes from that "ten".

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Dofinansowano ze środków Ministra Kultury i Dziedzictwa Narodowego
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