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| The Sikorsky UH-60 Black Hawk is a medium-lift utility or assault helicopter derived from the twin-turbine engine, single rotor Sikorsky S-70.
The S-70 was the winner of a United States Army competition in the late 1970s to replace the UH-1 Huey family. Though the two final competing designs were both developed to Army specifications, the UH-60 was selected over an entry from Boeing-Vertol. It would go on to serve as the basis for variants in service with other branches of the US military. The Black Hawk series of aircraft can perform a wide array of missions, including the tactical transport of troops, electronic warfare, and aeromedical evacuation: several Black Hawks are even used to transport the President of the United States as Marine One. In air assault operations it can move a squad of 11 combat troops with equipment or reposition the 105 mm M102 howitzer with thirty rounds of 105 mm ammunition, and a four-man crew in a single lift. Alternatively, it can carry 2,600 lb (1,170 kg) of cargo or sling load 9,000 lb (4,050 kg) of cargo. The Black Hawk is equipped with advanced avionics and electronics for increased survivability and capability, such as the Global Positioning System.SPECIFICATIONS: Crew: Minimum 2 pilots Capacity: 2,645 lb of cargo internally, including 14 troops or 6 stretchers, or 8,000 lb (UH-60A) or 9,000 lb (UH-60L) of cargo externally Length: 64 ft 10 in (19.76 m) Rotor diameter: 53 ft 8 in (16.36 m) Height: 16 ft 10 in (5.13 m) Disc area: 2,260 ft² (210 m²) Empty weight: 10,624 lb (4,819 kg) Loaded weight: 16,260 lb (7,375 kg) Max takeoff weight: 24,500 lb (11,113 kg) Powerplant: 2× General Electric T700-GE-701 free-turbine turboshafts, 1,560 hp (1,160 kW) each PERFOMANCE: Never exceed speed: 193 knots (222 mph, 357 km/h) Combat radius: 368 mi (420 nm, 592 km) Ferry range: 1,380 mi (1,200 nm, 2,220 km) Service ceiling: 19,000 ft (5,790 m) Rate of climb: 700 ft/min (3.6 m/s) Disc loading: 7.19 lb/ft² (35.4 kg/m²) Power/mass: 0.959 hp/lb (158 W/kg) |
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| Bibliography: Wikipedia |