【摘要】 采用竖置全跨试验方案,在CARDC(中国空气动力研究与发展中心)4米×3米风洞进行了几个二元翼型模型风洞试验。最初选用的模型是NASA GA(W)-1翼型,并作为校验模型。试验雷诺数高达4.69×100~6,攻角范围为-10～24°,试验结果相当满意。更多还原

【Abstract】 This paper recommends a method of testing two-dimensional models vertically spaned in a conventional wind tunnel. Up to now, as many as ten 2-D models have been tested using this methud in the CARDC 4X3 wind tunnel. The first one of them is a 2-D model of the NASA GA(W)-1 airfoil section and has been tested as a calibration model. The results were compared with data from NASA and good agreement was obtained. The tests were conducted over an angle-of-attack range from -10° to 24° and up to a Reynolds number of 4.69×106. For flow visualization, the method of attaching tufts was adopted. In order to obtain the profile drag, a total head rake of 39 Venturi tubes was employed.更多还原