By Bill Norton
Bell/Boeing V-22 Osprey: Multi provider Tilt-rotor КНИГИ ;ВОЕННАЯ ИСТОРИЯ Bell/Boeing V-22 Osprey: Multi carrier Tilt-rotorByBill NortonPublisher:Aerofax2004 128 PagesISBN: 1857801652PDF120 MBThis joint Bell and Boeing undertaking was once validated in 1982 according to the Joint prone complex Vertical carry application protecting a large functionality envelope and a number of initiatives. the reply got here within the type of the V-22 tilt-rotor, an idea verified previous through Bell with their 1977 XV-15. The shipping airplane sort fuselage of the V-22, in a position to hold 24 troops, is crowned via a wing with a posh flap/aileron procedure and swivelling pods housing Rolls-Royce turboshaft engines, every one riding huge, immense three-bladed prop-rotors. The XV-22A prototype first flew on 19 March 1989 and was once through 9 extra prototype and improvement plane. The purpose was once that the USAF may obtain the CV-22B for distinctive missions paintings, the U.S. Marine Corps the MV-22B attack transports and the USA military the HV-22B CSAR/fleet logistics model, however the technologically tough software has been set again by means of deadly injuries and an eighteen month grounding whereas flight questions of safety have been addressed. even if, it really is set to recommence a constrained improvement software to ensure that the creation plane will start to be added on the finish of 2003 and achieve preliminary working power through 2005 making the timing of this entire new booklet at the airplane, so much apposite. letitbit sharingmatrix eighty five
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Additional info for Bell/Boeing V-22 Osprey: Multi Service Tilt-rotor
Consequently, an uprated version of the 4,855shp (3,620-kW) General Electric T64, called the T64-GE-717, was considered as an interim power plant in the first 60 aircraft. This option might provide the power but not the sfc, reliability, and other MTE specifications, and also entailed additional costs for a future modification to the final engine design. Likewise, a version of the Avco Lycoming T55 was under consideration. However, it later developed that three engine manufacturers - General Electric, Pratt & Whitney, and Allison - assured the airframe manufacturers that prototypes of their MTE power plants would soon be available.
The idea was to generate cost-control discipline and to shift more of the program risk from the government. 5 billion. The unusual fixed-price contract for development and the first three low-rate production lots compelled the contractor to make changes to the proposed design to reduce risk, especially with respect to potential weight increases. To meet the guaranteed empty weight a crushable floor, intended to reduce crash impact forces imparted to occupants, was eliminated. Using their own funds, the contractors had been hard at work since June 1985 with continued research and development (R&D) aimed at further risk reduction.
A few off-site tests were planned, including sea trials aboard ship. Flights by military crews alone would be performed during operational evaluation (OPEVAL) at a number of locations. Motion-based manned simulators and the XV-15 were employed for aircrew raining. The first V-22 was revealed to the world in a rollout ceremony on 23 May 1988 at Arlington. At that time the first flight was scheduled for June (soon changed to around 15 August) and initial delivery of the first production example in December 1991.