连续变迎角测力试验技术在大型暂冲式跨声速风洞中的应用

由于暂冲式高速风洞运行时间短暂，普遍采用阶梯变迎角方式进行静态测力试验，其试验信息量难以满足先进飞行器研制的试验需求。为在暂冲式高速风洞中获得更为详尽的气动力信息，在2．4m跨声速风洞中进行了连续变迎角测力试验技术应用研究。主要介绍了该项试验技术的基本特点，给出了J7标模的主要试验结果。结果表明，该项试验技术获得的气动力数据与常规阶梯方式具有很好的一致性，可以满足工程实用的要求。

Application of continuous sweeping force measuring technology in large intermittent transonic wind tunnel

Static force measuring tests are usually carried out with so-called ＂step＂ method in which model＇s angle of attack changes step by step, as the run time in intermittent high speed wind tunnel is short. But this test method just provides deficient test information which can not satisfy the advanced aircraft invention demands. The study of continuous sweeping force measur- ing technology has been conducted in 2.4m transonic wind tunnel for getting more aerodynamic information, in which to get aerodynamic data as model＇s angle of attack sweeps continuously. Specialities of the sweeping method and test results of J7 reference model are presented. The test results show that the aerodynamic data of the sweeping method are consistent to conventional step method, and can satisfy demands of engineering applications.