The method of symmetrical spanwise blowing was used to suppress the wing-body rock of a typical canard-configuration model in free-to-roll tests. The experimental results showed that the rock was successfully suppressed by symmetrical spanwise blowing when the pitch angle was between thirty degrees and thirty-four degrees. However, this kind of blowing failed to suppress the non-commanded motion once pitch angle exceeded thirty-four degrees. To analyze the mechanism under this phenomenon, surface-pressure measurements and PIV tests were carried out. The reason for the successful suppression was inferred as the success of the delaying of windward vortex breakdown at a small sideslip angle, while the failed results at larger pitch angles were due to the fact that the blowing cannot delay the windward breakdown anymore under very small sideslip.


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    Title :

    Experimental Study of the Suppression of Wing-Body Rock by Spanwise Blowing


    Contributors:
    Chen, Kun (author) / Dong, Yizhang (author) / Shi, Zhiwei (author) / Tong, S.X. (author) / Sha, J. (author)


    Publication date :

    2019-07-01


    Size :

    489614 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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