Powered-lift STOL aircraft exhibit special aerodynamic characteristics that necessitate changes in established procedures of flight testing. Methods used in ground-effect flight testing of STOL-configured aircraft are described, with special emphasis on results obtained from tests of the YC-15 AMST prototype aircraft. Ground effect on lift and on drag is theoretically analyzed in terms of trailing vortices, bound vortex, and flight-path angle. Airspeed static source position errors are induced by ground constraint and must be considered in the data reduction. Flight-test results show a positive lift increment due to ground proximity.


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    Title :

    Flight-test measurements of ground effect - STOL airplanes


    Contributors:

    Conference:

    Annual Symposium ; 1977 ; Washington, DC


    Publication date :

    1977-01-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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