The basic limitations were defined of the pilot plus rotorcraft in making the transition from a very low decision height to a steady hover over the helipad. The term 'decision-height window' is defined as the limits of glideslope/localizer tracking errors, and groundspeed variations, that can exist at breakout to allow a safe visual transition to hover. The dimensions of the decision-height window can have a significant impact on the required rotorcraft handling qualities, and for setting autopilot coupler and flight director performance standards for decelerating instrument approaches in rotorcraft.


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    Title :

    Determination of Decision-Height Windows for Decelerating IMC Approaches in Helicopters


    Contributors:
    R. H. Hoh (author) / S. W. Baillie (author) / S. Kereliuk (author) / J. J. Traybar (author)

    Publication date :

    1991


    Size :

    17 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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