CARDC旋转天平风洞试验系统

CARDC ROTARY BALANCE WIND TUNNEL TESTING SYSTEM

旋转天平风洞试验系统主要用于风洞中测定飞机模型在不同姿态角时绕风轴以不同旋转速率作等速旋转状态下的气动特性，为飞机尾旋特性的分析和预测提供必要的气动系数。本文简要介绍了中国空气动力研究与发展中心低速所的旋转天平风洞试验系统的总体方案、试验能力和性能。文中给出了校验模型试验的主要结果，对试验数据的精准度进行了简单的讨论。校验模型试验结果表明，本试验系统给出的旋转状态气动力系数的精准度达到了较高的水平，具备了应用于型号试验和有关气动力研究的基本条件。

The rotary balance testing in wind tunnel is mainly used to measure aerodynamic forces acting on aircraft model rotating around the longitudinal axis of wind axes system to provide data neccessary to spin characteristics analysis and prediction.In the paper the configuration,testing capacity and performance of CARDC rotary balance testing system is presented.Major results of a calibration model test and discusions of data accuracy are also given.It is shown that aerodynamic coefficientve yielded by the rotary balance system have high accuracy and the system can be put into use to the project tests and aerodynamic research.