Wednesday, June 12, 2013

US To Acquire 177 CH-47 Chinook Helicopters And 99 V-22 Osprey Tilt-Rotor Aircraft

The United States Army has awarded a contract for 177 Boeing CH-47 Chinook transport helicopters in a deal worth roughly $4 billion. Also included is an option for an additional 38 CH-47 Chinook helicopters.

Another contract soon to be awarded is for 99 V-22 Osprey tilt-rotor aircraft for about $6.5 billion by the United States Navy. The V-22 Osprey is build by Boeing and Bell Helicopter.

The multi-purpose V-22 Osprey is the first tilt-rotor aircraft to have entered service. The V-22 Osprey specifications are:
  • Length of 17.5 m
  • Rotor diameter of 11.6 m
  • Wingspan of 14 m
  • Empty weight of 33140 lbs
  • Maximum takeoff weight of 60500 lbs
  • Maximum speed of 275 knots 
  • Combat radius of 722 km
  • Ceiling of 25000 feet
The Osprey is powered by 2 Rolls-Royce/Allison T406/AE 1107C-Liberty turboshafts with 6150 hp each.

The combination of a helicopter and fixed-wing turboprop aircraft delivers higher speed, increased range and higher payload, while maintaining vertical takeoff and landing (VTOL) and short takeoff and landing (STOL) capability.

The CH-47 Chinook is a twin-engined, heavy-lift transport helicopter that entered service in 1962. It's design is distinguished by two tandem rotors. The CH-47 specifications are:
  • Length of 30.1 m
  • Rotor diameter of 18.3 m
  • Height of 5.7 m
  • Empty weight of 23400 lbs
  • Maximum takeoff weight of 50000 lbs
  • Maximum speed of 315 km/h
  • Combat radius of 370 km
  • Ceiling of 18500 ft
The CH-47 Chinook is powered by 2 Honeywell Lycoming T55-GA-714A turboshafts with 4733 hp each.

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