The present work focuses on the investigation of unsteady aerodynamics of plunging cambered foil with conditions corresponding to that of a Micro Air Vehicle. The effect of non-dimensional plunge amplitude, plunging frequency and the dimensionless plunge velocity on the propulsive performance of a harmonically plunging cambered foil are studied by varying Reynolds number from 2.5 × 10⁴ to 7.5 × 10⁴. Further, the flow field around the foil is analysed to understand the influence of the above-mentioned parameters and the reasons behind the positive thrust force generation. It is observed that these investigated parameters remarkably influence the instantaneous force coefficients. It is also noticed that these parameters have a significant effect on the topology of the leading edge vortex which can dramatically change the aerodynamic performance of the foil. It is observed that the Reynolds number also has a significant influence on the drag-thrust transition.

目前的工作重点是研究在与微型飞行器相对应的条件下插入弧形翼片的非定常空气动力学。通过改变雷诺数从2.5×10 ⁴到7.5×10 ^{4研究了无量纲切入幅度、切入频率和无量纲切入速度对谐波切入弧形翼片推进性能的影响。}. 进一步分析了翼片周围的流场，以了解上述参数的影响以及产生正推力的原因。可以观察到，这些研究的参数显着影响瞬时力系数。还注意到这些参数对前缘涡流的拓扑结构有显着影响，可以显着改变翼片的空气动力学性能。可以看出，雷诺数对拖-推过渡也有显着影响。