Boeing CH-47 Chinook

Boeing CH-47 Chinook is a versatile, twin-engine, tandem rotor heavy-lift helicopter. The contra-rotating rotors eliminate the need for a rear vertical rotor, allowing all power to be used for lift and thrust, giving a top speed of 170 knots (196 mph, 315 km/h).
Crew - 3 pilot, copilot, flight engineer - Capacity - 33 troops or 24 litters and 3 attendants - Length: 98 ft 10 in (30.1 m) - Rotor diameter: 60 ft 0 in (18.3 m) - Height: 18 ft 11 in (5.7 m) - Disc area: 2,800 ft² (260 m²) - Empty weight: 22,450 lb (10,185 kg) - Loaded weight: 26,680 lb (12,100 kg) - Max takeoff weight: 50,000 lb (22,680 kg) - Powerplant: 2× Lycoming T55-GA-714 turboshafts, 5,069 hp (2,800 kW) each - Performance/Maximum speed: 170 knots VNE (196 mph, 315 km/h) - Range: 1,280 mi (1,110 nm, 2,060 km) - Service ceiling: 8,500 ft (2,590 m) - Rate of climb: 1,980 ft/min (10.1 m/s) - Disc loading: 9.5 lb/ft² (47 kg/m²) - Power/mass: 0.28 hp/lb (460 W/kg)