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

Auxiliary hydraulic power is provided by a 3000 psi (20,700 kPa), fixed displacement, 24 VDC electric motor-driven pump. The unit converts aircraft electrical power into rotary shaft motion to drive a cantilever shaft-mounted vane pump.

The V-22 Osprey is the world’s first production tiltrotor aircraft. Unlike any aircraft before it, the V-22 successfully blends the vertical flight capabilities of helicopters with the speed, range, altitude, and endurance of fixed-wing trans-ports.

The Osprey had two independent hydraulic systems and a backup system. A Hamilton Standard Turbomach T-62T-46-2 auxiliary power unit (APU) turbine, in the rear of the wing center section, drove two electrical generators and an air compressor; the APU also had an automatic fire extinguisher system.

The V-22 Osprey is the world’s first production tiltrotor aircraft. Unlike any aircraft before it, the V-22 successfully blends the vertical flight capabilities of helicopters with the speed,...

Including EMD and Operational Evaluation (OPEVAL), V-22 aircraft have flown more than 5,000 hours, participated in extensive ground-based and shipboard tests, achieved speeds of 342 knots (402 mph; 647 km/hr), altitude of 25,000 ft., gross weight of 60,500 lbs. and a G maneuver load factor of +3.9 at 260 knots.

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cal generators. An APU drives through the center gearbox for engine starting. The aircraft is required to fold compactly for ship­ board compatibility. This is accomplished by fold­ ing the rotor blades inboard above the wing with the nacelles at 90 degrees (Figure 2c). The nacelles are then rotated to cruise position (0 degrees) and

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