Comparison of three typical jets control (IMAGE)
Caption
Aiming at the dynamic stall problem that restricts the improvement of aircraft maneuverability, a new dynamic stall control method based on leading-edge DSJ is proposed in this paper. The results show that the leading-edge jet technology can improve the dynamic stall flow field environment. For the whole pitching process, the average lift coefficients of steady jet, SJ and DSJ increased by 3.65%, 10.51% and 14.62% respectively, and the average drag coefficients decreased by 9.58%, 29.9% and 32.0% respectively. In the downward phase, the average lift coefficient increased by 16.31%, 26.72% and 35.88% respectively, and the average drag coefficient decreased by 26.21%, 50.46% and 54.28% respectively. Due to its strong ‘wall attachment effect’ and ‘quasi-steady’ characteristics, DSJ exhibits optimal control effect, showing its application potential in dynamic stall control.
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Chinese Journal of Aeronautics
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