Republic XF-91 | |
|---|---|
| 국가 | 미국 |
| 역할 | 프로토타입 요격기 항공기 |
| 첫 비행 | 9 월 1949 |
| 내장 | 2 |
Tthe 공화국 XF-91 썬더셉터 (원래 XP-91로 지정됨)은 Republic Aviation에서 개발한 혼합 추진 프로토타입 요격기입니다. 항공기는 대부분의 비행에 제트 엔진을 사용하고 등반 및 요격 중에 추력을 더하기 위해 네 개의 작은 로켓 엔진 클러스터를 사용합니다. 이 디자인은 현대 제트 엔진의 성능이 급속히 향상되어 완성 될 때까지 대부분 쓸모 없었으며 두 개의 프로토 타입 만 제작되었습니다. 이 중 하나는 레벨 비행에서 마하 1을 초과 한 최초의 미국 전투기였습니다.
소스: 위키 백과에 공화국 XF-91
| 공화국 XF-91 | |
|---|---|
| 사진 작가 | 존 헥, 블라디미르 야쿠보프 |
| 로컬라이제이션 | 국립 항공 우주 박물관, 워싱턴 DC |
| 사진 | 99 |
참고 항목:
General Characteristics and Role
The Republic XF-91 Thunderceptor was an experimental prototype interceptor aircraft developed for the U.S. Air Force (USAF) in the late 1940s. Its primary role was to explore the concept of a high-performance, short-range interceptor that could rapidly climb to high altitudes and intercept enemy bombers. To achieve this, the aircraft was equipped with a revolutionary mixed-propulsion system combining a turbojet engine for cruise and four rocket engines for bursts of acceleration during combat or climb. The XF-91 is perhaps best known for its uniquely designed inverse tapered wings, a feature intended to mitigate Mach tuck and improve low-speed handling.
| Property | Typical Value (XF-91) |
|---|---|
| 역할 | Experimental Mixed-Power Interceptor |
| National Origin | 미국 |
| 제조업체 | Republic Aviation Company |
| First Flight | 9 월 1949 |
| 승무원 | 1 (Pilot) |
| 길이 | 13.23 m (43 ft 5 in) |
| 윙스 팬 | 9.51 m (31 ft 2 in) |
| Gross Weight | 8,870 kg (19,550 lb) |
Propulsion and Aerodynamics
- Primary Engine: 1 x General Electric J47-GE-3 turbojet engine (in the rear fuselage).
- Turbojet Thrust: 23.35 kN (5,200 lbf) (dry).
- Auxiliary Power: 4 x Reaction Motors XLR11 liquid-fueled rocket engines (mounted in the tail above and below the jet exhaust).
- Rocket Thrust: Approx. 26.7 kN (6,000 lbf) total for short bursts.
- Maximum Speed: Mach 1.71 (achieved in a later powered flight). It was the first U.S. fighter to exceed Mach 1 in level flight using a mixed-propulsion system.
- Inverse Taper Wing: The wing chord was wider at the tip than at the root (the inverse of conventional taper). This arrangement maintained high lift at the tips, helping to prevent tip stall and improve control at high angles of attack.
- Landing Gear: Featured a unique bicycle-style main landing gear with two main wheels side-by-side at the center of the fuselage, supported by small outrigger wheels under the wingtips.
Program Outcome and Legacy
- Technical Success: The XF-91 proved the feasibility of using rocket augmentation for performance bursts and demonstrated the viability of the inverse taper wing concept for high-speed flight control.
- Cancellation: Despite its technical achievements, the program was canceled in 1952. The development of more powerful, conventional turbojet engines (which eliminated the need for complex, short-duration rocket power) and the rise of the superior all-jet F-104 Starfighter made the mixed-power interceptor obsolete.
- Legacy: The inverse taper wing design, while not adopted, was an important piece of research. The aircraft’s testing provided vital data on high-Mach flight and supersonic stability.
- Preservation: The sole remaining prototype is preserved and displayed at the National Museum of the United States Air Force at Wright-Patterson AFB in Dayton, Ohio.
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