直升机气动干扰实验研究

A EXPERIMENT INVESTIGATION OF HELICOPTER INTERACTIONAL AERODYNAMICS

本文介绍了一个模型直升机气动干扰实验研究的概况,给出了有和没有旋翼时平尾法向力时均值的比较。旋翼拉力系数对平尾法向力时均值的影响,平尾法向力的时间历程等。通过平尾法向力计算结果与实验结果的比较,说明在低风速时的平尾法向力计算中考虑旋翼下洗对动压的影响是重要的。

This paper describes a experiment investigation of helicopter interactional aerodynamics.The normal forces of horizontal tail plane are compared for with and without rotor.Influence of rotor thrust on both is presented .mean and history of normal forces of horizontal tail plane Predicted data of normal forces of horizontal tail plane are compared with test data,it is shown that influence of rotor downwash on dynamic pressure must be involved in prediction of normal forces of horizontal tail plane at low wind speed.