Thursday, January 5, 2012

Bell Boeing V-22 Osprey


The Bell Boeing V-22 Osprey is an American multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.

The V-22 originated from the United States Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. The team of Bell Helicopter and Boeing Helicopters was awarded a development contract in 1983 for the tiltrotor aircraft. The Bell Boeing team jointly produce the aircraft.[4] The V-22 first flew in 1989, and began flight testing and design alterations; the complexity and difficulties of being the first tiltrotor intended for military service in the world led to many years of development.

The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007; it is supplementing and will eventually replace their CH-46 Sea Knights. The Osprey's other operator, the U.S. Air Force, fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed in both combat and rescue operations over Iraq, Afghanistan and Libya.

Specifications (MV-22B)
MV-22 Osprey Line Drawing.svg
A map of Iraq and surrounding nations with a small circle showing the area the CH-46E can cover and a larger circle for the V-22.
V-22's combat radius in Iraq, contrasted with the CH-46E's smaller combat radius.
Nassau Amphibious Ready Group, showing four V-22s in 2010. Two V-22s are in compact storage configuration.

Data from Norton, Boeing,Bell guide, Naval Air Systems Command, and USAF CV-22 fact sheet

General characteristics

Crew: Four (pilot, copilot and two flight engineers/crew cheifs)
Capacity:
24 troops (seated), 32 troops (floor loaded), or
20,000 lb (9,070 kg) of internal cargo, or up to 15,000 lb (6,800 kg) of external cargo (dual hook)
1× Growler light internally transportable ground vehicle
Length: 57 ft 4 in (17.5 m)
Rotor diameter: 38 ft 0 in (11.6 m)
Wingspan: 45 ft 10 in (14 m)
Width with rotors: 84 ft 7 in (25.8 m)
Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
Disc area: 2,268 ft² (212 m²)
Wing area: 301.4 ft² (28 m²)
Empty weight: 33,140 lb (15,032 kg)
Loaded weight: 47,500 lb (21,500 kg)
Max takeoff weight: 60,500 lb (27,400 kg)
Powerplant: 2 × Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each

Performance

Maximum speed: 250 knots (463 km/h, 288 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[150]
Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
Range: 879 nmi (1,011 mi, 1,627 km)
Combat radius: 390 nmi (426 mi, 722 km)
Ferry range: 1,940 nmi (2,230 mi, 3,590 km) with auxiliary internal fuel tanks
Service ceiling: 25,000 ft (7,620 m)
Rate of climb: 2,320 ft/min (11.8 m/s)
Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
Power/mass: 0.259 hp/lb (427 W/kg)

Armament

1× 7.62 mm (.308 in) M240 machine gun or 0.50 in (12.7 mm) M2 Browning machine gun on ramp, removable
1× 7.62 mm (.308 in) GAU-17 minigun, belly-mounted, retractable, video remote control in the Remote Guardian System

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