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在跨音速气流中,卵柱体上将出现激波。同时,大迎角时卵柱体的背风面上将形成离体旋涡。这就构成了卵柱体上旋涡与激波发生作用的条件。实验和分析表明,卵柱体背风面上的激波对不对称的旋涡谱有很大的影响。当一对不对称旋涡通过激波后,两旋涡的不对称性减小,并且它们将向着离开物体的方向偏折。分析和实验结果是一致的。因此,可以认为,跨音速时旋涡与激波的作用是作用在卵柱体上的横侧气动力随M_α数增加而减小的主要原因。
In transonic airflow, there will be shocks on the ovary. At the same time, the high angle of attack at the lee side of the lemma will form isolated vortices. This constitutes a vortex on the ovum and shock wave conditions. Experiments and analyzes show that the shock waves on the lee side of the egg cylinder have a great influence on the unsymmetrical vortex spectrum. As a pair of asymmetric vortices pass through the shock, the asymmetry of the two vortices decreases and they will deflect away from the object. Analysis and experimental results are consistent. Therefore, it can be considered that the effect of the vortex and the shock wave at the transonic speed is the main reason that the lateral aerodynamic force acting on the ovary cylinder decreases with the increase of the M_α number.