
Se hele annoncen 112.000 2017 I går 119.900 kr. | |
| Land | Uk |
| Type | Eksperimentelle V/STOL fly |
| Første flyvning | 19. november 1960 (s.1127) – 7. marts 1964 (tårnfalk) |
| Bygget | 6 P.1127s – 9 tårnfalke |
Den Hawker P.1127 og Hawker Siddeley Kestrel FGA.1 er det eksperimentelle og udviklingsfly, der førte til Hawker Siddeley Harrier, den første lodrette og / eller korte start og landing (V / STOL) jetjagerbomber. Udviklingen af P.1127 begyndte i 1957 og udnyttede Bristol Engine Companys valg om at investere i oprettelsen af Pegasus' motor med vektorkraft. Testen begyndte i juli 1960, og ved udgangen af året havde flyet opnået både lodret start og vandret flyvning.
| Hawker XV-6A tårnfalk gå rundt | |
|---|---|
| Fotograf | Vladimir Yakubov |
| Lokalisering | Virginia Air & Space Center, Hampton, VA |
| Billeder | 106 |
| Hawker Siddeley P.1127 Harrier Walk Around | |
|---|---|
| Fotograf | Burhand Donke |
| Lokalisering | Unknow |
| Billeder | 21 |
Se også:
| Hawker P.1127 Walk Around | |
|---|---|
| Fotograf | Meindert de Vreeze |
| Lokalisering | Unknow |
| Billeder | 41 |
Development and the Tripartite Evaluation
The Hawker Siddeley Kestrel was an experimental V/STOL (Vertical/Short Take-Off and Landing) aircraft developed in the early 1960s as a follow-up to the P.1127. It served as a critical technology demonstrator for the “vectored thrust” concept. In 1964, a unique “Tripartite Evaluation Squadron” was formed, consisting of pilots and ground crews from the UK, the United States, and West Germany. This joint team spent a year proving that a jet fighter could operate from unprepared fields, forest clearings, and small ship decks, effectively laying the operational groundwork for the future Harrier.
| Attribute | Standard Specification (Kestrel FGA.1 / XV-6A) |
|---|---|
| Rolle | V/STOL Evaluation Aircraft |
| Besætning | 1 (Pilot) |
| Kraftværk | 1 x Bristol Siddeley Pegasus 5 (15,200 lbf thrust) |
| Maximum Speed | 1,142 km/h (710 mph) / Mach 0.92 at sea level |
| Længde | 12.95 meters (42 ft 6 in) |
| Vingefang | 6.99 meters (22 ft 11 in) |
| Maximum Weight | 7,030 kg (15,500 lb) |
| First Flight | March 7, 1964 |
The Pegasus Engine and Vectored Thrust
- Single-Engine Solution: Unlike other VTOL designs that used multiple “lift engines,” the Kestrel used one Pegasus turbofan with four rotating nozzles to direct all thrust for both hover and forward flight.
- Reaction Control System: Because aerodynamic surfaces (flaps/rudders) don’t work in a hover, the Kestrel used “puffer” jets at the nose, tail, and wingtips, fed by engine bleed air, to maintain balance.
- Landing Gear: It featured a unique “zero-track” bicycle landing gear—two main wheels in tandem under the fuselage and small outrigger wheels on the wingtips for stability.
- VIFF Capability: During testing, pilots discovered they could “Vector In Forward Flight” (VIFF), rotating the nozzles during air combat to decelerate rapidly or turn tighter than conventional aircraft.
Transition to the United States
- The XV-6A Designation: After the tripartite trials ended in 1965, six of the aircraft were shipped to the US for further testing by the Army, Navy, and Air Force, receiving the American designation XV-6A.
- Marine Corps Interest: While the US Air Force and Army eventually passed on the design, the US Marine Corps was so impressed by the XV-6A trials that they pushed for the acquisition of its successor, the AV-8A Harrier.
- Preservation: Several Kestrels survive today, most notably at the National Museum of the US Air Force in Dayton, Ohio, and the Pima Air & Space Museum in Arizona.
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