Hawker Siddeley P.1127 GR.1" designation. The Harrier went on to become a successful aircraft in British service, and was exported to several nations, often seeing usage as a carrier-based aircraft. The P.1127/Kestrel was an experimental V/STOL aircraft, which served as the forerunner for the production of the Hawker Siddeley Harrier and the wider Harrier Jump Jet family. It served to demonstrate an entirely original technique of flight, as well as to trial a brand new type of engine in the form of the Pegasus turbofan engine. Despite this, the aircraft employed a principally conventional structure which, according to Mason, lent itself favourably to
Harrier Jump Jet the type, receiving 102 AV-8A and 8 TAV-8A Harriers between 1971 and 1976. The British Aerospace Sea Harrier is a naval V/STOL jet fighter, reconnaissance and attack aircraft; it was a navalised development of the Hawker Siddeley Harrier. The first version entered service with the Royal Navy's Fleet Air Arm in April 1980 as the "Sea Harrier FRS.1", and was informally known as the "Shar". Sea Harriers played a high-profile role in the Falklands War of 1982, flying from the aircraft carriers HMS "Invincible" and HMS "Hermes". Wartime experiences led to the production of an improved model in the form