The Rolls Royce Pegasus is a turbofan engine originally designed by the Bristol Engine Co. and is now manufactured by Rolls-Royce. The engine powers all versions of the Hawker Siddeley Harrier multi-role military aircraft. The first prototype was made in 1958 and formal production began in 1959.
- Made in: UK, USA, Italy, India, Spain and Thailand under licence.
- Type: Twin-spool turbofan.
- Length: 137 in (3.480 m).
- Diameter: 48 in (1.219 m).
- Dry weight: 3,960 lb (1,796 kg).
- Compressor: 3-stage low pressure, 8-stage high pressure axial flow.
- Combustors: Annular.
- Turbine: 2-stage high pressure, 2-stage low pressure.
- Maximum thrust: 23,800 lbf (106 kN).
- Overall pressure ratio: 16.3:1.
- Specific fuel consumption: 0.76 lb/lbf-hr.
- Thrust-to-weight ratio: 6:1.
- First made in: 1958.
- Nationality: British.