运动模型式飞行器气动力参数测试系统研究

Research of an Aerodynamics Coefficients Measuring System with Moving Aircraft Model

摘要:

为了对飞行器进行气动布局、飞行性能评估，提出了一种运动模型式气动力参数测量方法，并研制了一套运动模型式测试系统，通过运动模型来模拟飞行器在空气中的运动，其构造主要包含载具、测试支架、六分量天平、风速测量模块、数据采集模块、控制模块、便携计算机等部分；该类测试系统在某些特定工况下能准确模拟飞行器的飞行状态，对流场参数和模型所受载荷进行实时测量，预测各运动状态下飞行器的气动特性；通过数值模拟分析和风洞实验对车载试验数据进行了对比验证，结果表明，该测试系统能够准确获得模型的气动力特性数据；该系统具有一定的拓展性和通用性，可使用火箭橇等其他载具开展高速运动模型式气动力参数测量试验。

Abstract:

In order to evaluate the aerodynamics layout and flight performance of the aircraft, a aerodynamic coefficients measuring method with moving model is proposed, and a moving model measuring system is developed to simulate the motion of the aircraft in the air through the moving model, whose construction mainly includes the carrier, measuring stand, six-component balance, wind speed measurement module, data acquisition module, control module, portable computer and other parts; The measuring system can simulate the flight state of the vehicle, accurately predict the aerodynamic characteristics of the vehicle in each motion state, and make real-time measurements of the flow field coefficients; the numerical simulation analysis and wind tunnel experiments have been conducted to compare and verify the data, and the results show that the measuring system can accurately obtain the aerodynamic characteristics data of the model; In addition, the system is also scalable and versatile, and can be used with other carriers such as rocket sleds to carry out high-speed moving model aerodynamic coefficients measurements.