悬停旋翼在火箭发射线上的诱速计算方法

A Method for Calculating Rotor Induced Volocity during the Hover Condition along the Rocket Launch Line

定性探讨了旋翼下洗速度对火箭轨道产生的影响．以直升机悬停条件下稳定尾流为例，计算方法从广义尾流模型入手，以期望的拉力值为收敛准则，通过反复修正迭代求解环量方程。最后，计算结果展示了旋翼下洗速度在火箭轨道上的分布，并作了简要分析。

The effect of rotor downwash velocity on rocket trajectory is qualitatively investigated. Taking the rotor steady wake for the hover condition as an example, the calculation method starts with the generlized wake model and takes the rotor thrust value as the convergence criterion to solve the circulation equations iteratively. Finally the rotor downwash velocity distribution along rocket trajectory is found with brief analysis.