The ability of a part-span variable inlet guide vane to modulate the thrust of a high bypass turbofan engine was evaluated at altitude/Mach number conditions of 4572 m/0.6 and 9144 m/0.93. Fan-tip, gas generator and supercharger performance were also determined, both on operating lines and during fan duct throttling. The evaluation was repeated with the bypass splitter extended forward to near the fan blade trailing edge. Gross thrust attenuation of over 50% was achieved with 50 deg variable inlet guide vane closure at 100% corrected fan speed. Gas generator supercharger performance fell off with variable inlet guide vane closure but this loss was reduced when a splitter extension was added. The effect of variable inlet guide vane closure on gas generator performance was minimal.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Effect of a part-span variable inlet guide vane on the performance of a high-bypass turbofan engine


    Contributors:

    Conference:

    Joint Propulsion Conference ; 1981 ; Colorado Springs, CO, US


    Publication date :

    1981-07-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





    Turbofan with motorized rotating inlet guide vane

    KUPRATIS DANIEL BERNARD / SIDELKOVSKIY DMITRIY B / TERWILLIGER NEIL et al. | European Patent Office | 2020

    Free access

    Turbofan with motorized rotating inlet guide vane

    KUPRATIS DANIEL BERNARD / SIDELKOVSKIY DMITRIY B / TERWILLIGER NEIL et al. | European Patent Office | 2021

    Free access


    Variable bypass turbofan engine

    ROLLING AUGUST J | European Patent Office | 2017

    Free access