The report covers the flight test of a three-axis hydrofluidic stability augmentation system for a UH-1-type helicopter. The design goal was to improve the performance of the aircraft, without stabilizer bar, in the speed range of 60 to 120 kn. The system was installed in a UH-1C helicopter. The helicopter's hydraulic power supply was used to power the FSAS controlers and servoactuators. The system improved the performance of the UH-1C helicopter in all three axes by increasing the damping, increasing the phugoid mode period, and producing a constant vehicle rate proportional to cyclic stick input. (Author)


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    Title :

    Three-Axis Fluidic Stability Augmentation System


    Contributors:
    M. E. Ebsen (author) / H. D. Ogren (author) / D. H. Sotanski (author)

    Publication date :

    1971


    Size :

    170 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English