Two documents discuss results of additional investigations of concept introduced in "Helicopter Tail-Boom Strakes" (LAR-13233). Essence of concept that strake or pair of strakes on side of tail boom facing retreating side of main rotor of helicopter perturbs flow in such way to increase aerodynamic pressure on that side, contributing force to thrust from tail rotor. Because of force, thrust required of tail rotor for yaw control reduced. Important advantage in low-speed flight, especially in sideward flight, in which tail-rotor thrust in absence of strake sometimes insufficient.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Further Research On Helicopter Tail-Boom Strakes


    Contributors:

    Published in:

    Publication date :

    1994-12-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :



    Helicopter Tail-Boom Strakes

    Kelley, H. L. / Phelps, A. E., III / Wilson, J. C. | NTRS | 1986


    Flight investigation of the effect of tail boom strakes on helicopter directional control

    Kelley, Henry L. / Crowell, Cynthia A. / Yenni, Kenneth R. et al. | NTRS | 1990


    Flight investigation of the effect of tail boom strakes on helicopter directional control

    Kelly, Henry L. / Crowell, Cynthia A. / Yenni, Kenneth R. et al. | NTRS | 1993