大长径比旋转弹俯仰动导数风洞实验技术

本文介绍了大长径比旋转弹俯仰动导数风洞实验技术,其中包括实验方案,天平和模型结构、性能以及实验结果。实验条件为:马赫数0.5～3.0;攻角0°,4~(?),8~(?);最大转速为15000r/min。实验结果表明:实验方案可行,测试系统性能良好,结果可靠,旋转对俯仰动导数影响很小。

WIND TUNNEL EXPERIMENTAL TECHNIQUE FOR THE PITCHING DYNAMIC DERIVATIVES OF A SPINNING PROJECTILE HAVING HIGH FINENESS RATIO

This paper gives an introduction to the wind tunnel experimental technique intended for the investigation of pitching dynamic derivative of a spinning projectile having high fineness ratio.It describes the test program, structure of the balance and the model, as well as the experimental results. The tests were made under the following conditions : range of Mach numbers :0.5 to 3; angle of attack: 0, 4 and 8 deg; maximum sping rate of the projectile: approximantely 15000r/min. The experimental results indicate that the test program is feasible, the experimental setup displays fine performance; and the results are rel iable. There appears to be no detectable spinning effect on the pitching dynamic derivative.