【摘要】 风洞试验是空气动力学研究和飞机设计的必要技术手段,其中测力天平是飞机模型测力试验的核心关键设备之一。在飞机模型动力模拟风洞试验中(如推力矢量,TPS进排气,滑流试验等),需要给飞机模型注入高压气体用以驱动动力模拟实验设备,在测力天平上需要安装高压供气管路用来传输高压气,即组成为空气桥天平。空气桥天平在供气时,由于自身刚度,压力膨胀等原因会对天平测力有干扰影响,需要考虑相关解决措施。研制一台新型六分量内式空气桥天平,用于测量推力矢量风洞试验中飞机的气动载荷。并研制一套校准装置用于空气桥天平的校准,得到天平工作公式,并修正消除安装波纹管所产生的影响。更多还原

【Abstract】 Wind tunnel test is a necessary technical means for Aerodynamics Research and aircraft design, among which the force balance is one of the key equipment for aircraft model force test. In the wind tunnel test of aircraft model dynamic simulation(such as thrust vector,TPS intake and exhaust, slipstream test, etc.), it is necessary to inject high-pressure gas into the aircraft model to drive the dynamic simulation test equipment, and install high-pressure air supply pipeline on the force balance to transmit high-pressure air, that is to say, to form an air bridge balance. When the air bridge balance is supplying air, its own stiffness, pressure expansion and other reasons will interfere with the balance’s force measurement, so relevant solutions need to be considered. A new six component internal air bridge balance is developed to measure the aerodynamic load of the aircraft in the thrust vector wind tunnel test. A set of calibration device is developed to calibrate the air bridge balance, the working formula of the balance is obtained, and the influence caused by the installation of bellows is corrected and eliminated.更多还原