【摘要】 本文使用气浮技术及气动分元法等特殊实验方法,对锥体模型加工、安装偏差以及头部斜切引起的小滚动力矩进行了风洞实验研究。实验M数为4、5、6,攻角从-2°至+6°,Re数在5×10~6左右。文中给出了实验结果,静校和风洞吹风重复性误差,并对有关实验结果进行了初步的讨论。更多还原

【Abstract】 A wind tunnel experimental method,which is used for obtaining the rolling moment with small asymmetry,such as nosetip,tolerance in models installing or machining,has been developed.The experimental Mach numbers is 4,5,6.The angle of attacks range from-2° to 6°,and the Reynolds number,about 5×106.The experiment results and repeatance error are given in the paper.The experiment investigation shows that the tolerance in machining can cause as large as 10-4 coefficient of rolling moment.It is somewhat even large than that of the nosetip.更多还原