ホーカー・シドレー P.1127 | |
| 国 | 英国 |
| 型 | 実験用V/STOL航空機 |
| 初飛行 | 1960年11月19日(P.1127)~1964年3月7日(ケストレル) |
| 構築 | 6 P.1127s – 9 ケストレル |
ザ ホーカー P.1127 と ホーカー・シドレー・ケストレル FGA.1 ホーカーシドレーハリアー、最初の垂直および/または短い離着陸(V / STOL)ジェット戦闘爆撃機につながった実験的および開発的な航空機です。P.1127の開発は1957年に始まり、ブリストル・エンジン社がペガサスのベクトル推力エンジンの開発に投資するという選択を利用した。テストは1960年7月に始まり、年末までに航空機は垂直離陸と水平飛行の両方を達成しました。
ソース： ホーカー・シドレー P.1127 ウィキ
| ホーカーXV-6Aケストレルウォークアラウンド | |
|---|---|
| カメラマン | ウラジーミル・ヤクボフ |
| ローカライズ | バージニア航空宇宙センター、ハンプトン、バージニア州 |
| 写真 | 106 |
| Hawker Siddeley P.1127 Harrier Walk Around | |
|---|---|
| カメラマン | Burhand Donke |
| ローカライズ | 知りません |
| 写真 | 21 |
関連項目:
| Hawker P.1127 Walk Around | |
|---|---|
| カメラマン | マリンデル・ド・ヴレーズ |
| ローカライズ | 知りません |
| 写真 | 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) |
|---|---|
| 役割 | V/STOL Evaluation Aircraft |
| 乗組員 | 1 (Pilot) |
| パワープラント | 1 x Bristol Siddeley Pegasus 5 (15,200 lbf thrust) |
| 最高速度 | 1,142 km/h (710 mph) / Mach 0.92 at sea level |
| 長さ | 12.95 meters (42 ft 6 in) |
| 翼 | 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.
ビュー : 2160
