论文部分内容阅读
本文收集了七种飞机型号模型,在三座低速风洞、两座高速风洞的试验结果,低速风洞试验数据与高速风洞试验数据(M=0.5或0.6)存在明显差别,文中分析了它们不衔接的规律。我们采用相同的模型和支杆、相同的试验方法,在FL—7和FL—8风洞对衔接问题进行专题试验研究。在此基础上,论述了影响高低速风洞试验数据衔接问题的主要因素。指出了减小或消除低速风洞的支架干扰,是解决“衔接”问题的关键。
In this paper, we collected seven model aircraft models. The test results of three low-speed wind tunnels and two high-speed wind tunnels show that there is a clear difference between the low-speed wind tunnel test data and the high-speed wind tunnel test data (M = 0.5 or 0.6) They do not converge in the law. We use the same model and struts, the same test method, in the FL-7 and FL-8 wind tunnel on the convergence of the topic of experimental study. On this basis, the main factors that affect the convergence of experimental data of high and low speed wind tunnel are discussed. It is pointed out that reducing or eliminating the support of low-speed wind tunnel is the key to solve the “convergence” problem.