Beginning with the prescribed wake model, a Semi Empirical Correction for the vortex core effect on rotor wake is made and free wake calculation is carried out.
首先从预定的广义尾流入手，并引入尖涡涡核作用的半经验修正，对旋翼的自由尾流进行计算分析。
An empirical formula of curvature correction factor was presented.
提出了一个曲率修正系数的经验计算式。
A empirical equation of the leakage of Belleville ring seal is presented, and a correction for the axial vibration is given.
本文通过试验得出了碟形圈密封漏失量的经验公式，并对轴向振动的影响进行了修正。
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