FL-8风洞旋转天平试验支架干扰研究(英文)

Investigation of support interference on rotary balance test in FL-8 low speed wind tunnel

给出了FL-8风洞进行旋转天平试验支架干扰研究的情况,对试验方法、设备和试验结果进行了介绍。为了实现圆弧形滑轨与模型支杆的支撑和变角功能,特别设计了新型的变角支杆。试验结果表明:支架干扰对纵横向气动力的影响规律是不同的,对纵向结果的影响是与旋转方向无关的,而对横向结果的影响在正反旋转时是相反的。尾撑和背撑试验结果经过支架干扰修正后向相同的值靠近,说明支架干扰修正的结果是合理的,提高了试验结果的准度。

This paper introduced the research of rotary balance test support interference in FL-8 low speed wind tunnel,including the test method,equipment and results.To realize the function of support and angle variation,an angle variation rod was designed.Test results showed that the support interference of the longitudinal and lateral aerodynamic forces was different,the influence of support interference was irrelative to the rotational direction in the longitudinal results,and it was opposite with different rotational direction in the lateral results.The results after support interference correction of dorsal and rear sting support were close to each other,which indicated that the correction was reasonable,and the accuracy of the test results was improved.