迎角／滚转角组合风洞试验中侧向弹性角的影响及处理方法

通过迎角／滚转角组合改变模型姿态是横向测力风洞试验中重要的试验方式，此类试验中虽然会提供侧向弹性角数据，但在使用试验数据时往往不使用侧向弹性角数据，这会使得气动载荷与模型姿态对应关系不准确。侧向弹性角由侧向力和偏航力矩引起，在侧向力和偏航力矩较大的试验中，侧向弹性角的影响尤为显著，如方向舵效率试验。本文通过分析侧向弹性角的影响，提出一种侧向弹性角数据处理方法，经试验应用表明可以有效地提高数据使用的准确性。

The effect and processing method for the lateral flexible angle in the angle of attack and roll coupled wind tunnel test

Changing the model attitude with the coupled angle of attack and roll is an impor-tant mode for the lateral test.Although the lateral flexible angle is offered in this kind of test, the data of lateral flexible angle is often neglected,which leads to the inaccuracy of the relation between the aerodynamic loads and the model attitude.Lateral flexible angle is generated from the lateral force and the yawing moment,and the effect of the lateral flexible angle will be nota-ble when the values of the lateral force and the yawing moment are large in the test,for example, the yaw steerage test.The effect of the lateral flexible angle is analyzed,offers a data processing method of the lateral flexible angle.Calculative and experimental results show that the method can increase the accuracy of the application data.