The invention provides a model wind tunnel virtual flight test aerodynamic coefficient measurement method, which comprises the following steps of: adding a balance in a model wind tunnel virtual flight test system to measure triaxial aerodynamic force in a model movement process, acquiring model mass and centroid parameters by using a parameter identification method, and performing multi-shafting conversion and inertia force correction to obtain the aerodynamic coefficient of the model wind tunnel virtual flight test system. A lift coefficient, a resistance coefficient and a lateral force coefficient of the model are extracted from aerodynamic force collected by the balance. According to the method, the problem that the aerodynamic coefficient cannot be accurately obtained in the linear displacement constraint wind tunnel virtual flight test is solved, support is provided for comprehensive analysis of wind tunnel virtual flight test data, the three-degree-of-freedom virtual flight test information obtaining capacity is improved, and then the test trueness is improved.
本发明提供一种模型风洞虚拟飞行试验气动力系数测量方法,通过在模型风洞虚拟飞行试验系统中增加天平测量模型运动过程中的三轴气动力,利用参数辨识方法获取模型质量和质心参数,通过多轴系的转换和惯性力修正,从天平采集的气动力中提取出模型的升力系数、阻力系数和侧力系数。该方法弥补了线位移约束风洞虚拟飞行试验无法准确获取气动力系数的问题,为风洞虚拟飞行试验数据综合分析提供了支撑,本发明提高了三自由度虚拟飞行试验信息获取能力,进而提高了试验的真实度。
Model wind tunnel virtual flight test aerodynamic coefficient measurement method
一种模型风洞虚拟飞行试验气动力系数测量方法
10.06.2022
Patent
Elektronische Ressource
Chinesisch
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 / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
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