
Sikorsky R-4 | |
|---|---|
| 국가 | 미국 |
| 역할 | 헬리콥터 |
| 첫 번째 비행 | 출생 1942년 1월 14일 |
| 내장 | 131 |
Tthe 시코르스키 R-4 이고르 시코르스키 (Igor Sikorsky)가 설계한 2인승 헬리콥터로, 단일 3날 메인 로터가 장착되고 방사형 엔진으로 구동됩니다. R-4는 세계 최초의 대규모 대량 생산 헬리콥터이자 미 육군 공군, 미국 해군, 미국 해안 경비대, 영국 왕립 공군 및 왕립 해군이 사용한 최초의 헬리콥터였습니다. 미 해군과 미국 해안 경비대에서 헬리콥터는 Sikorsky HNS-1로 알려졌습니다. 영국 서비스에서는 Hoverfly로 알려졌습니다.
| Sikorsky XR-4C Walk Around | |
|---|---|
| 사진 작가 | 블라디미르 야쿠보프 |
| 로컬라이제이션 | 국립 항공 우주 박물관 – Udvar-Hazy Center, Chantilly, VA |
| 사진 | 33 |
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참고 항목:
General Characteristics
The Sikorsky R-4 (known as the Hoverfly in British service) was the world’s first mass-produced helicopter and the first to be successfully put into service by the United States Army Air Forces (USAAF) and Allied military forces during World War II. Designed by Igor Sikorsky, it pioneered the single-main-rotor, single-tail-rotor configuration common today. It was primarily used for training, liaison, and air-sea rescue.
| Property | Typical Value (R-4B Production Variant) |
|---|---|
| 역할 | Liaison, Training, Search and Rescue (SAR) |
| Designer/Manufacturer | Igor Sikorsky / Sikorsky Aircraft |
| First Flight (Prototype XR-4) | 출생 1942년 1월 14일 |
| 승무원 | 2 (Pilot and Passenger/Co-pilot) |
| Rotor Diameter | 11.58 m (38 ft) |
| Length (Fuselage) | 10.2 m (33 ft 8 in) |
| Max Takeoff Weight | 1,170 kg (2,581 lb) |
| Units Built | 131 (All variants) |
Design and Powerplant
- Engine: One Warner R-550-3 7-cylinder air-cooled radial piston engine.
- Power Output: 149 kW (200 hp). (Earlier variants used 165 hp or 180 hp engines.)
- Rotor System: Single main rotor with three wooden blades, and a two-bladed anti-torque tail rotor.
- Construction: Fuselage constructed from steel tubing truss, covered with doped fabric to reduce drag.
- Pilot Controls: Incorporated the cyclic stick, collective pitch lever, and rudder pedals for the tail rotor, establishing the standard helicopter control layout.
- Historic Use: Achieved the first air-based combat rescue in Burma in April 1944.
공연
- Maximum Speed: 121 km/h (75 mph, 65 knots) at sea level.
- Cruise Speed: 105 km/h (65 mph, 56 knots).
- Range: Approximately 210 km (130 miles, 110 nautical miles).
- Service Ceiling: 2,400 m (8,000 ft).
- Climb Rate: 3.3 m/s (650 ft/min).
- Piloting Difficulty: The R-4 was notoriously difficult to fly due to vibration and the lack of a governor to automatically coordinate throttle with collective pitch changes.
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