【摘要】 本文研究了目前国内亚、跨声速风洞M数控制的几种方法,分析了现状和所面临的问题,提出对第二喉道用闭环控制和对驻室静压的闭环控制方法,简要介绍了52风洞亚声速运行时的驻室静压控制和总、静压比值控制的原理,并着重讨论了风洞串级控制的变量耦合问题。更多还原

【Abstract】 Several methods have been studied in this paper,whichnowadays are being used to control Mach numbers of airflow for dom-estic subsonic and transonic wind tunnel tests.The real situation and theproblems of these methods have been analyzed.A new method of closedloop control to the second throat of the wind tunnel for controlling thestatic pressure in the plenum chamber or the ratio of stagnation press-ure to static pressure has been introduced.The variable coulping proble-ms in the process are emphatically discussed.更多还原