A flight investigation of various stability augmentation systems for jet-lift V/STOL aircraft, using a variable stability helicopter, is reported. The main emphasis was placed on overcoming the directional divergence due to the unstable weathercock stability that occurs at low airspeeds, but short investigations of a roll stabilizer to reduce the pilot work load, and a pitch stabilizing device to assist the pilot to maintain attitude in the presence of an angle-of-attack instability, were included. Both visual and a limited number of simulated instrument flights were conducted. After testing several stabilizing devices, it was concluded that a lateral accelerometer operating through the yaw reaction controls yielded directional handling qualities in the 'acceptable-satisfactory' region. (Author)


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    Title :

    A Flight Investigation of Various Stability Augmentation Systems for a Jet-Lift V/STOL Aircraft (Hawker-Siddeley P1127) Using an Airborne Simulator


    Contributors:

    Publication date :

    1968


    Size :

    40 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English