The following concepts, based on using open airscrew(s) for VTOL maneuvers, are re-examined in light of current technology: (1) tip-driven helicopters, (2) compound helicopters; and (3) high-speed VTOL aircraft, represented by tiltrotors, tiltwings, retractoplanes and stoppable rotors. Criteria, permitting one to compare performance of aircraft using diverse lifting and propelling methods are established. Determination of currently possible performance, indication of near-future potentials, and comparison of those items with the baseline levels (as represented by contemporary shaft-driven helicopters, first generation tiltrotors, and commercial turboprop fixed-wind aircraft) constitutes bulk of this report.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Open airscrew VTOL concepts


    Contributors:

    Publication date :

    1992-09-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Open Airscrew VTOL Concepts

    W. Z. Stepniewski / T. Tarczynski | NTIS | 1992


    General airscrew applications to VTOL propulsion

    Ritter, A. / Ordway, D.E. | Engineering Index Backfile | 1962


    Airscrew braking

    Engineering Index Backfile | 1945


    Airscrew design

    Engineering Index Backfile | 1932


    Airscrew weight

    Gillmore, K.B. / Cleaver, A.V. | Engineering Index Backfile | 1941