History
The Harrier emerged from work by Hawker and Bristol on a practical vectored-thrust aircraft. The Pegasus engine used rotating nozzles to direct thrust downward for vertical lift or backward for forward flight, avoiding separate lift engines and the dead weight they would impose in cruise.
Operational development moved through the P.1127 and multinational Kestrel evaluation before the RAF accepted the Harrier GR.1. The U.S. Marine Corps saw particular value in an aircraft able to operate near ground forces and purchased the AV-8A.
Origins and Development
The first Harrier used a single Pegasus turbofan with four vectoring nozzles, bicycle landing gear with outrigger wheels, and short wings carrying external weapons. Vertical takeoff was possible, but short rolling takeoffs usually allowed more fuel and ordnance.
Design and Capabilities
The aircraft's strongest advantage was basing flexibility. It could use roads, small pads, and forward sites, reducing dependence on vulnerable main runways. Range and payload were modest, especially in pure vertical operation, and pilots required specialized training for transitions between wing-borne and jet-borne flight.
Operational History
RAF Harriers served in Germany as part of NATO's dispersed tactical-force concept. U.S. Marine AV-8As supported expeditionary aviation. During the Falklands War, RAF ground-attack Harriers operated from carriers alongside Sea Harriers, demonstrating how the broader family could function when conventional land bases were unavailable.
Dispersed operations required an entire support concept. Fuel, ammunition, maintenance tools, communications, and ground crews had to move with the aircraft if roadside or forward sites were to be useful. The Harrier could escape dependence on a runway, but it could not escape logistics. NATO exercises in Germany therefore tested both the airplane and the ground organization needed to keep small detachments operating after main bases were attacked.
Variants and Development
The GR.1 and improved GR.3 served the RAF, while the AV-8A and later AV-8C equipped the Marines. The Sea Harrier added radar and naval air-defense systems, while the later AV-8B/Harrier II became a substantially redesigned second generation with a larger composite wing and improved payload.
Legacy
The first Harrier made V/STOL combat aviation operational rather than experimental. It did not erase the advantages of conventional runways, but it created a workable alternative for forces that valued dispersal, expeditionary basing, and small-deck naval operations.
The first operational generation of the Harrier V/STOL combat aircraft, fielded by the RAF as the GR.1/GR.3 and by the U.S. Marine Corps as the AV-8A/AV-8C for attack, reconnaissance, and close-support missions.
Variants
| Designation | Type | Role | Recorded operators |
|---|---|---|---|
| AV-8A Harrier | Export | Attack | United States Marine Corps |
| AV-8C Harrier | Upgrade | Attack | United States Marine Corps |
| Harrier GR.1 | Production | Attack | Royal Air Force |
| Harrier GR.3 | Upgrade | Attack | Royal Air Force |
Representative specifications
Configuration-specific profiles are shown separately so values from different variants are not blended into one false “standard” aircraft.
Harrier GR.3 — C022 conservative technical baseline
Powerplant: 1 × Rolls-Royce Pegasus 11 (Mk 103)
Sources and further reading
Structured references supporting this aircraft family, variants, specifications, and narrative sections.
- AV-8C Harrier — Naval History and Heritage Command · Tier 1
- Progress and Purpose: A Developmental History of the U.S. Marine Corps 1900-1970 — United States Marine Corps · Tier 1
- Hawker Siddeley Harrier GR3 — Royal Air Force Museum · Tier 2
- The RAF Harrier Story — Royal Air Force Museum · Tier 2