A flight investigation was undertaken to assess the potential benefits afforded by a vertical-velocity command system (VVCS) for VTOL (vertical take-off and landing) aircraft. This augmentation system was conceived primarily as a means of lowering pilot workload during decelerating approaches to a hover and/or landing under category III instrument meteorological conditions. The scope of the investigation included a determination of acceptable system parameters, a visual flight evaluation, and an instrument flight evaluation which employed a 10 deg, decelerating, simulated instrument approach task. The results indicated that the VVCS, which decouples the pitch and vertical degrees of freedom, provides more accurate glide-path tracking and a lower pilot workload than does the unaugmented system.


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    Title :

    Flight Investigation of a Vertical-Velocity Command System for VTOL Aircraft


    Contributors:
    J. R. Kelly (author) / F. R. Niessen (author) / K. R. Yenni (author) / L. H. Person (author)

    Publication date :

    1977


    Size :

    26 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English