Regulatory changes are proposed for new engine certification for multi-engine helicopters to account for contingency operations when one engine goes out at take-off. The new rules are needed because current regulations define category A and B conditions as one-engine out, land immediately, or continue take-off, respectively. Category A is seldom feasible while Category B requires oversize engines, implying lowered fuel efficiencies. However, NASA studies have shown that engines with large contingency power can operate more efficiently in normal conditions due to decreased coolant flow. Techniques for realizing up to a 50 percent power augmentation with minor modifications of existing engines are described.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Powerplant design for one-engine-inoperative operation


    Contributors:
    Hirschkron, R. (author) / Martin, E. (author) / Samanich, N. (author)

    Published in:

    Publication date :

    1984-08-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




    SIDESLIP GUIDANCE FOR ONE ENGINE INOPERATIVE CONDITION

    TREMBLAY LUC / METIVET MARK / MEUNIER FRANCIS et al. | European Patent Office | 2018

    Free access


    OPERATING AIRCRAFT PROPULSION SYSTEM DURING ENGINE-INOPERATIVE EVENT

    GATES PATRICK / PAPILLON MELANIE | European Patent Office | 2023

    Free access

    One Engine Inoperative Cruise for Mission Performance Optimisation

    Massey, Colin / Highams, Lisa / Violante, Tiago | British Library Conference Proceedings | 2018


    SIDESLIP GUIDANCE FOR ONE ENGINE INOPERATIVE CONDITION

    TREMBLAY LUC / METIVET MARK / MEUNIER FRANCIS et al. | European Patent Office | 2019

    Free access