The invention discloses a supersonic wind tunnel flutter test device and test method, and belongs to the technical field of wind tunnel flutter tests. A fairing is fixed to the inner wall of a wind tunnel through a steel plate, and an inlet and an outlet are formed in the top and the bottom of the fairing; the model is provided with a rotating shaft hinged to the bearing, and the bottom of the rotating shaft is fixedly connected with a spring piece. The model is provided with a limiting pin, the air cylinder pushes the Y-shaped clamping groove plate to move, the limiting pin is locked, and amplitude divergence is restrained during flutter of the model. After the limiting pin is locked, the base assembly is pushed to move upwards, so that the model extends into the wind tunnel; the wind tunnel is started, the limiting pin is unlocked after the airflow reaches the test wind speed, and the wind tunnel tests are carried out; when the model vibrates, the Y-shaped clamping groove plate locksthe limiting pin to inhibit the amplitude divergence of the model; the base assembly is pulled to enable the model to be rapidly retracted into the fairing. The fairing with the inlet and the outletis arranged, and the functions of retracting the model into the fairing and simulating the aerodynamic configuration of the aircraft body after flutter occurs are fulfilled; the method is safe, reliable and simple.
一种超声速风洞颤振试验装置和试验方法,其属于风洞颤振试验技术领域。它采用整流罩通过钢板固定在风洞内壁上,整流罩顶部和底部设有出入口;模型带有转轴,转轴与轴承铰支连接,转轴底部与弹簧片固定连接。模型带有限位销,气缸推动Y型卡槽板移动,锁定限位销,在模型颤振时抑制振幅发散。锁定限位销后,推动底座组件向上移动,使模型伸到风洞内;启动风洞,气流达到试验风速后,解锁限位销,进行风洞试验;模型发生颤振时,Y型卡槽板锁定限位销,抑制模型振幅发散;拉动底座组件使模型迅速收回至整流罩内部。设置带有出入口的整流罩,实现了发生颤振后将模型收回至整流罩内部和模拟机身气动外形的功能,该方法安全、可靠、简单。
Supersonic wind tunnel flutter test device and test method
一种超声速风洞颤振试验装置和试验方法
2021-02-02
Patent
Electronic Resource
Chinese
IPC: | G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen |
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