翼型气动力直接测量风洞试验技术探索

在西北工业大学NF-3风洞二元试验段内开展了翼型气动力直接测量试验技术的探索性研究。描述了试验方法和试验设备，给出了试验结果，并与通过模型表面测压和尾迹测量法所得结果进行了对比。结果表明：翼型气动力直接测量技术关键在于解决测力中段和外段的传力及缝道流动问题；笔者提出的方法比较好地解决了这一难题，直接测量的翼型气动力和表面测压和尾迹测量技术所得结果在中小迎角范围吻合良好。

Experimental technique on direct measuring of aerodynamic forces of airfoil

The exploring investigation of the direct measuring of the aerodynamic forces on airfoil is performed in NF-3 wind tunnel at Northwestern Polytechnical University. The experimental method and facility are described and the experimental result is put forward. The comparison of the forgoing result with the result of surface pressure and drag with trail total pressure tube is done. It is shown that the key of experimental technique on the direct measuring of the aerodynamic forces on airfoil rests on force-transfering and gap flow between middle section and outside section.