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  • Bell Helicopter and Boeing V-22 Osprey - Military Power

Bell Helicopter and Boeing V-22 Osprey - Military Power

Tiltrotors Provide An Unfair Advantage

Jason ThompsonJan 1, 2011
The V-22 Osprey combines the vertical takeoff (VTOL) capabilities of a helicopter with the range and speed benefits of an airplane. Today, this tiltrotor concept is being deployed in active service, assisting in U.S. conflicts and natural disasters around the world. The first prototype was built back in 1954, and its progress has been turbulent due to costs, engine filtration in dusty situations, and mechanical failures. Still, there is no denying the tactical advantages this diesel-powered (well, JP8 really) Osprey can deliver: twice the speed, three times the payload, and five times the range of the helicopters it's designed to replace.
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First Of Its Kind
This is the world's first production tiltrotor aircraft, and it combines many interesting features. For example, it has a 5,000-psi hydraulic system, 240 kVA of electrical capacity, and two Rolls-Royce gas-turbine engines connected together with a driveshaft in case one engine fails. The airframe is made from aluminum, and the wings and skin are composed of IM-6 graphite-epoxy-solid laminates. It uses titanium fasteners that are extremely light and strong. There is a 2,000-pound winch, and even an onboard oxygen-generating system. Loaded for combat with 24 troops and equipment, the Osprey is able to travel about 494 miles. It's self-deployable around the world when flown with an added fuel tank and no cargo.
MIL-SPEC: V-22 Osprey
  • Manufacturer: Bell Helicopter and Boeing Rotorcraft Systems
  • Length: 57 feet 4 inches
  • Width: 84 feet 7 inches (helicopter mode)
  • 83 feet 11 inches (airplane mode)
  • Rotor diameter: 38 feet 1 inch
  • Max cruise speed at 47,000 pounds: 287 mph (250 knots)
  • Fuel capacity: 2,037 gallons
  • Weight: 32,600 pounds
  • Internal cargo capacity: 20,000 pounds
  • Crew: 3 cockpit seats and 24 troop seats
  • Engines: 2 Rolls-Royce AE 1107C-Liberty turboshaft turbines
  • Power: 6,150 shaft hp (each turbine)
  • Pressure ratio: 16.7:1
  • Length: 78.1 inches
  • Diameter: 34.2 inches
  • Weight: 971 pounds
  • Compressor: 14 hp
  • Turbine: 2 hp

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