针对FL-9低速高雷诺数风洞腹撑支架干扰问题,采用风洞试验研究的方法,开展了圆截面支杆与24棱截面支杆、锥度支杆与等直段支杆、不同的模型机身与支杆直径比等一系列对比验证试验,对FL-9风洞内式天平单支杆腹撑支杆的二维截面形状、三维外形、支杆直径选取原则等进行了研究.获得了对雷诺数不敏感、支架干扰量小且稳定的腹撑支杆,并通过与其他风洞试验对比,进一步验证了FL-9风洞内式天平单支杆腹撑系统的精准度.%For the problem of the ventral support interference in the FL-9 low-speed and high-Reynolds number wind tunnel,series comparative tests were conducted regarding various supports with different configurations including circle shape and twenty-four sides polygon,cone shape and constant section shape,different diameter ratios of the fuselage and the strut.These experiments were employed to study the selection rule for the FL-9 wind tunnel internal balance mono-strut ventral support with respect to the two-dimensional cross section shape,the three-dimensional spatial shape,and the strut diameter.A strut insensible to Reynolds number was obtained with low and stable support interference.The repeatable precision and accuracy of the FL-9 wind tunnel internal balance mono-strut ventral system were further verified by comparing the present tests with those conducted in other wind tunnels.
展开▼
