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Pegasus Aircraft Engine


Photograph of Pegasus aircraft engine
Wikipedia Commons

The Bristol Pegasus was an air-cooled radial aircraft engine with nine cylinders. Derived from the Mercury, but with numerous mechanical improvements, it had a bore of 5.75 inches (146mm) and stroke of 7.5 inches (146mm).

Model
Horsepower
Wattage
Notes
IIIM3
690 hp
514 kW

VI
775 hp
578 kW

X
920 hp
686 kW

XVIII
1065 hp
794 kW

Aircraft using this engine included the Stanraer, Sunderland, Swordfish, and Walrus.

References
Gunston (2006)


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