33th Congress of the International Council of the Aeronautical Sciences

03.2 - Experimental Aerodynamics

EXPERIMENTAL INVESTIGATION OF THE EFFECT OF THE YAW ANGLE ON THE DRAG REDUCTION RATE FOR TRAPEZOIDAL RIBLETS

A. Inasawa¹, R. Taniguchi¹, M. Asai¹, M. Sasamori², M. Kurita²; ¹Tokyo Metropolitan University, Japan ;²JAXA, Japan

The effects of yaw angle of riblets on the drag reducing effect was examined experimentally for riblets having trapezoidal valleys in turbulent wind channel. The drag reduction effect was weakened when the yaw angle exceeded 10 deg and thus was more sensitive to the yaw angle than for saw-tooth riblets.


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