Electric and hybrid electric vertical takeoff and landing vehicles will require high performance electric motor driven propulsion systems to enable fuel burn and emissions benefits over traditional liquid fuel powered rotorcraft. One key to the design of a high performance electric motor driven propulsion systems is to be able to estimate the mass and efficiency of a gearbox at various motor and propellor operating speeds. Knowing how gearbox mass and efficiency trade with motor and propellor rotational speed, allows motor and propellor RPM to be traded in an overall optimization of the propulsion system. In this paper, a genetic optimization tool for estimating the mass and efficiency of gearboxes is presented. Example results from the tool are presented and compared to existing correlations in use by NASA aircraft design codes.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Genetic Optimization of Planetary Gearboxes Based on Analytical Gearing Equations


    Contributors:

    Publication date :

    2022-07-05


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





    Planetary gearing

    Furman, F.D. | Engineering Index Backfile | 1925


    Planetary Gearing Device

    OHNEMUS ULRICH / LIEBERT SEBASTIAN / KLUGE BENJAMIN | European Patent Office | 2017

    Free access

    Planetary gearing device

    OHNEMUS ULRICH / LIEBERT SEBASTIAN / KLUGE BENJAMIN | European Patent Office | 2018

    Free access