Tests of the YG-l autogiro were conducted in the full-scale wind tunnel to investigate the lift, drag, and moment characteristics of the machine and its different components. Tests were made upon the complete autogiro and upon the complete autogiro with the following parts removed: (1) horizontal tail, (2) horizontal tail and rotor-blade tabs, (3) horizontal tail and rotor blades. Additional tests were made upon the autogiro rotor alone. Flight tests were made upon the complete machine to investigate the validity of the wind-tunnel corrections applied in the reduction of the data. The results show a considerable discrepance between the flight and wind-tunnel tests at high lift coefficients. This discrepancy makes it impossible to rely upon the absolute values obtained in the wind-tunnel tests. The flight tests indicate, however, that the true values of the lift-drag ratio are higher than those obtained in the wind tunnel. A maximum lift-drag ratio of 11 for the rotor alone was indicated by the wind tunnel tests.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Full-Scale Wind-Tunnel and Flight Tests of a YG-1 Autogiro


    Contributors:
    J. B. Wheatley (author) / W. C. Clay (author)

    Publication date :

    1937


    Size :

    42 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Full-scale wind-tunnel tests of PCA-2 autogiro rotor

    Wheatley, J.B. / Hood, M.J. | Engineering Index Backfile | 1935


    Full-scale wind-tunnel tests of a PCA-2 autogiro rotor

    Wheatley, John B. / Hood, Manley J. | TIBKAT | 1935


    Wind-Tunnel Tests of 10-foot-diameter Autogiro Rotors

    Wheatley, John B / Bioletti, Carlton | NTRS | 1937


    Wind-tunnel tests of 10-foot-diameter autogiro rotors

    Wheatley, J.B. / Bioletti, C. | Engineering Index Backfile | 1936


    Wind-tunnel tests of a 10-foot-diameter autogiro rotors

    Wheatley, John B. / Bioletti, Carlton | TIBKAT | 1936