The CH-47B variable-stability helicopter was used to evaluate a range of height-response configurations while performing a precision hover bob-up task. The purpose of the study was to assess the validity of results obtained in previous ground-based and in-flight simulations in the context of a precision bob-up task and to provide additional flight data for inclusion in revisions to specifications for helicopter handling qualities. Height response characteristics were implemented using explicit model-following techniques, and the resulting CH-47B dynamics were validated using time-domain and frequency-domain data-analysis methods. The tests complemented the previous investigations by providing detailed pilot comments and ratings, and performance and control-utilization data that relate exclusively to the hover bob-up task. The results are compared with those from previous investigations and with new criteria that have been proposed for handling qualities requirements for helicopters.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Flight evaluation of height response characteristics for the hover bob-up task and comparison with proposed criteria


    Contributors:

    Publication date :

    1986-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    V/STOL hover stability impact on hover control task

    Whitaker, A. B. / Kelly, C. P. / Wittman, R. B. et al. | NTRS | 1977



    Study of Army Design Hover Criteria

    D. V. Horacek / M. E. Calvert | NTIS | 2017



    HOVER FLIGHT TEST SYSTEM FOR AIRCRAFT

    MAGONIGAL SEAN C / DRYFOOS JAMES B / BENDER JEFFREY S et al. | European Patent Office | 2021

    Free access