两种翼型螺旋桨ARA-D和S1223的等离子体增效实验研究

文章首先基于雷诺相似理论,在地面螺旋桨实验平台上开展ARA-D翼型螺旋桨微秒脉冲等离子体增效三维实验,结果表明,等离子体对螺旋桨拉力增效效果随着脉冲频率增加而减弱,而螺旋桨转矩受等离子体影响随拉力增效效果增加而减弱,拉力、效率最大增幅分别达到10.79%、11.56%。而后基于雷诺相似理论及叶素理论,在低湍流度风洞开展S1223翼型螺旋桨叶素微秒脉冲等离子体增效二维实验,结果表明等离子体激励提高了翼型各叶素拉力,其中根部与尖部叶素表现尤为明显。二维实验结果可为三维实验激励器展向排布方案提供理论依据。2种实验结果均表明,等离子体射流可以有效抑制翼型表面流动分离。

Experimental study of the enhancement of plasma flow control of ARA-D and S1223 propeller airfoils

Based on the Reynolds-Similarity Theory, an experiment is carried out for the ARA-D propeller airfoil to study the microsecond pulse plasma flow control supported by the ground test platform for the propeller. It is found that the synergy of the thrust decreases with the increase of the actuation frequency. The thrust increases by 10.79% and the efficiency increases by 11.56%. Based on the Reynolds-Similarity Theory and the Blade Element Theory, an experiment is carried out for the S1223 propeller airfoil to study the enhancement performance of the microsecond pulse plasma flow control supported by the low-turbulence wind tunnel. It is found that the plasma actuation improves the thrust of the blade elements, especially in the root and the tip, and the result provides a theoretical basis for the actuator distribution in the span direction in ARA-D experiments. The results of both experiments show that the plasma jet restrains the boundary layer separation on the airfoil surface effectively.