二元多段翼型试验技术研究

ＮＨ－２风洞在国内首次开展了二元多段翼增升装置试验技术研究。本文主要研究了试验装置的尺寸选择，二元性的确保及沿壁干扰修正，尤其是侧壁干扰修正方法等方面的问题。结果是有价值的。可应用于多段翼增升装置的选型试验。该试验技术经ＧＡ（Ｗ）－１模型的考核，证明与国外资料结果吻合较好，并应用于南昌飞机制造公司所承担的Ｎ５飞机增长升装置的选型，该机试飞满意。

Experimental Investigation of 2-D Multi-Element Airfoil

An experimental investigation of 2-D multi-element airfoil has been first carried out in NH-2 low speed wind tunnel in our country. This experimental technique had been verified by GA(W)-1 air foil model and its results were in fair agreements with those from foreign countries. This experimental method had been successfully applied to N5 airplane air foil selection for lift-enhancement. In this paper the main research projects are laid on the following items: the selection of size of the test device, the assurance of the 2-D characteristics and the correction of the tunnel wall interference, particularly the problem of the interference correction on the tunnel side wall. The results can be applied to the lift-enhancement experiment for the multi-element airfoil.