Specifications (XH-51A)
Data from Janes's All The World's Aircraft 1969-70
General characteristics
- Length: 40 ft 9 in (12.40 m)
- Rotor diameter: 35 ft 0 in (10.67 m)
- Height: 8 ft 2½ in (2.50 m)
- Disc area: 962 ft² (89.4 m²)
- Empty weight: 2,790 lb (1,265 kg)
- Max. takeoff weight: 4,100 lb (1,864 kg)
- Powerplant: 1 × Pratt & Whitney Canada PT6B-9 turboshaft, 550 hp (410 kW)
Performance
- Maximum speed: 151 knots (174 mph, 280 km/h)
- Cruise speed: 139 knots (160mph, 257 km/h)
- Range: 226 NM (260 mi, 418 km)
- Service ceiling: 16,000 ft (4,876 m) (hover ceiling (in ground effect))
- Rate of climb: 2,000 ft/min (10 m/s)
- Disc loading: 4.26 lb/ft² (20.9 kg/m²)
- Power/mass: 0.27 hp/lb (0.44 kW/kg)
Read more about this topic: Lockheed XH-51