Helicopters1962 experimental helicopter series by Lockheed
Lockheed XH-51
The Lockheed XH-51 (Model 186) is an American single-engine experimental helicopter designed by Lockheed Aircraft, utilizing a rigid rotor and retractable skid landing gear. The XH-51 was selected as the test vehicle for a joint research program conducted by the United States Army and United States Navy to explore rigid rotor technology.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
- Manufacturer
- Lockheed Corporation
- Category
- Helicopters
- Country of origin
- United States
- First flight
- 1962-11-02
Specifications
- Cruise speed
- 140 kt
- Max speed
- 151 kt
- Range
- 230 nm
- Service ceiling
- 16,000 ft
- Rate of climb
- 2,000 ft/min
- Max takeoff weight
- 4,100 lb
- Empty weight
- 2,790 lb
- Fuel capacity
- 80 US gal
- Powerplant
- Pratt & Whitney Canada PT6 B-9
- Engines
- 1
- Seats
- 2
- Length
- 40.8 ft
- Wingspan
- 16.1 ft
- Height
- 8.2 ft
- Number built
- 3
Specifications are approximate and may vary by variant. Compiled from Wikipedia (CC BY-SA).
Reference and training only. Specifications vary by variant — consult the manufacturer and the official documents.