大型结冰风洞双供水供气喷雾控制系统研制OACSTPCD

The double water supply and gas supply system is the key to ensure the super-cooled large droplet(SLD)cloud simulation ability of the icing wind tunnel,and a large icing wind tunnel double water supply and gas supply spray control system is developed in view of the problems of insufficient SLD cloud simulation abili-ty and operation envelope to be expanded in the existing spray system.In view of the characteristics of multiple control variables and large measurement points of the spray system,a distributed control system based on indus-trial ethernet network is established,and test processes,methods and strategies are formulated.The perfect double water supply and gas spray test technology is established,moreover,the system debugging and verifica-tion are carried out.The test results indicate that the accuracy of two-way water pressure and air pressure con-trol are stable within 1％,which reaches the system design index,and the system can provide strong support for the subsequent airworthiness certification of China's aircraft.