The objective of this research is to investigate the efficacy of circulation control (CC) at low Reynolds numbers ( R e = 150 , 000 ) with relatively low and high blowing rates on a circulation control wing (CCW). Four dual-radius flap geometries are developed and tested by varying specific flap parameters from a previously studied baseline configuration. A two-dimensional low-speed wind-tunnel experimental study is undertaken to evaluate the effect of trailing edge upper slot blowing at cruise flight and takeoff (0° and 30° flap deflection). The wind tunnel tests are conducted at Mach numbers of 0.03, with momentum coefficients of blowing ( C μ ) ranging from 0.0 to 0.3. The research presented in this paper is the natural outgrowth of results reported in previous work related to the wind tunnel testing of a CCW with dual-radius flaps. This investigation explores the design of CC dual-radius flaps to improve the performance of existing CC flap configurations. This research also provides insight into how the characteristics of the CC flap geometry affect CC performance.


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    Title :

    Wind Tunnel Investigation of a Circulation Control Wing with Dual-Radius Flaps



    Published in:

    Journal of Aircraft ; 55 , 4 ; 1731-1741


    Publication date :

    2018-07-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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