Improved aircraft architecture with a reduced bleed aircraft secondary power system

    公开(公告)号:AU2002242188A1

    公开(公告)日:2002-09-04

    申请号:AU2002242188

    申请日:2002-02-14

    Abstract: The present invention relates to an improved architecture for an aircraft. The aircraft has a first engine, a first gearbox associated with the first engine, a first starter/generator associated with the gearbox, and a first motor drive connected to the first starter/generator for providing the starter/generator with electric power to start the first engine and to receive electric power from the starter/generator after the engine has been started to operate electrically driven systems onboard the aircraft. The aircraft preferably further has at least one other engine which has a gearbox and a starter/generator associated with it and at least a second motor drive connected to the starter/generator. The electrically driven systems operated by the motor drive(s) include an environmental control system, a wing anti-icing system, an aircraft control system, and the aircraft fuel system. The aircraft also includes an auxiliary power unit for supplying electrical power to at least the first motor drive for initiating operation of the first engine.

    12.
    发明专利
    未知

    公开(公告)号:DE60317118T2

    公开(公告)日:2008-07-31

    申请号:DE60317118

    申请日:2003-01-13

    Abstract: The present invention relates to an engine integrated auxiliary power unit. The engine (10) comprises a high pressure spool which includes a high pressure compressor (20) connected to a high pressure turbine (22) and a low pressure spool which includes a low pressure compressor (12) connected to a low pressure turbine (14). The engine further has a system for independently operating the high pressure spool and thus allowing the high pressure spool to function as an auxiliary power unit.

    CONVERGENT-DIVERGENT FILM COOLANT PASSAGE

    公开(公告)号:CA1275052A

    公开(公告)日:1990-10-09

    申请号:CA526017

    申请日:1986-12-22

    Abstract: Convergent-Divergent Film Coolant Passage A coolant passage through a wall to be cooled, such as the wall of a hollow airfoil, is shaped and oriented to eject coolant fluid therefrom within the boundary layer of hot gases flowing over the surface to film cool the wall downstream of the outlet. The passage includes a metering portion near its inlet, followed by a diffusing portion and nozzle portion. The nozzle portion, adjacent the outlet, simultaneously diverges and converges in mutually perpendicular directions to produce a more uniform coolant velocity profile, which results in increased coolant area coverage and improved cooling effectiveness.

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