高速风洞模型支撑方式研究

Research of Sting Support in Highspeed WindTunnel Test

摘要:

为了合理选择模型支撑形式，在高速风洞进行了直支杆与Z支杆两种支撑形式的支架干扰研究试验。结果发现，支架对模型带来不可忽略的干扰量，两种支撑形式对升力、阻力与力矩的干扰量随迎角基本上呈线性变化；直支杆由于距离模型较近，对模型尾部带来较大的影响。而Z支杆对模型尾部影响较小，在全机与无尾两种状态下的干扰量较为相近。

Abstract:

In order to choosing right model support, support interference of rear sting and Zsting was experimentally investigated in a highspeed wind tunnel. The experimental results show that the sting support interference is not small enough to be neglected. The interference on lift，drag and pitching moment coefficient changes lineally with the model attack angle. The rear sting is so close to model that it affects the flow field on model empennage. The Zsting brings little effect on model empennage, so the interference of whole model is similar with that of the model without empennage.