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Bristol Siddeley BE.53 Pegasus
Rolls-Royce Pegasus

The Engine Specifications
Bristol Aero-Engines began work on the BE.53 Pegasus in 1958.  Since the British government had declared manned combat aircraft to be obsolete, NATO's Mutual Weapons Development Program and Bristol paid for development.  Four curved nozzles rotate to provide both thrust and lift.

The engine was designed in tandem with the Hawker P.1127 which first flew in 1960.  It is still the only engine of its kind.

Production and development of the Pegasus was continued by Rolls-Royce when Bristol was acquired by that firm in 1966.  Over 1,100 engines have been produced.

Vectored-thrust turbofan
Compressor: three LP and eight HP stages
Turbine: two LP and two HP stages
Mass flow: 435 lb/sec
Pressure ratio: 14
Models Used by
Mk 103: 21,500 lb (95.6 kN)
British Aerospace Harrier
Related Pages
More about Bristol Aero-Engines
More about Rolls-Royce

page updated 04 July 2003



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Kenneth W Shanaberger 2000 - 2010