
Vanagas Siddeley P.1127 | |
| Šalies | Jk |
| Tipas | Eksperimentiniai V/STOL orlaiviai |
| Pirmasis skrydis | 1960 m. lapkričio 19 d. (p.1127) – 1964 m. kovo 7 d. (Kestrel) |
| Pastatytas | 6 P.1127s – 9 Kestrels |
2007 Vanagas P.1127 ir Vanagas Siddeley Kestrel FGA.1 yra eksperimentiniai ir technologinės plėtros orlaiviai, atvedę į "Hawker Siddeley Harrier", pirmąjį vertikalų ir (arba) trumpą kilimo ir tūpimo (V / STOL) reaktyvinį naikintuvą-bombonešį. P.1127 kūrimas prasidėjo 1957 m., Pasinaudojant Bristolio variklių kompanijos pasirinkimu investuoti į Pegasus vektorinės traukos variklio kūrimą. Bandymai prasidėjo 1960 m. Liepos mėn., O iki metų pabaigos orlaivis pasiekė tiek vertikalų, tiek horizontalų skrydį.
Šaltinis: Hawker Siddeley P.1127 apie Wiki
| "Hawker XV-6A Kestrel" pasivaikščiojimas aplink | |
|---|---|
| Fotografas | Vladimiras Yakubovas |
| Lokalizavimo | Virdžinijos oro ir kosmoso centras, Hamptonas, VA |
| Nuotraukos | 106 |
| Hawker Siddeley P.1127 Harrier Walk Around | |
|---|---|
| Fotografas | Burhand Donke |
| Lokalizavimo | Nežinoti |
| Nuotraukos | 21 |
Taip pat žiūrėkite:
| Hawker P.1127 Walk Around | |
|---|---|
| Fotografas | Meindert de Vreeze |
| Lokalizavimo | Nežinoti |
| Nuotraukos | 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) |
|---|---|
| Vaidmenį | V/STOL Evaluation Aircraft |
| Įgulos | 1 (Pilot) |
| Jėgainė | 1 x Bristol Siddeley Pegasus 5 (15,200 lbf thrust) |
| Maximum Speed | 1,142 km/h (710 mph) / Mach 0.92 at sea level |
| Ilgis | 12.95 meters (42 ft 6 in) |
| Sparnų ilgis | 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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