便携式导弹级间活塞式分离装置充气特性研究

Study of Pneumatic Characteristics of Portable Missile Interstage Piston-type Separation Device

便携式导弹级间活塞式分离装置是一种新型级间气动分离装置,利用Simulink软件对其充气特性进行研究,建立活塞缸压力仿真模型,分析了活塞缸容积、气孔临界直径对活塞缸压力变化、充气时间的影响规律。结果表明,充气时间随着气孔临界直径减小而增大、与活塞缸容积成正比,活塞缸容积、气孔临界直径越接近临界值,活塞式分离装置的气动分离特性越好。

Portable missile interstage piston-type separation device is a new type of interstage aerodynam- ic separation device. Studying on pneumatic characteristics with Simulink software, a simulation model of piston cylinder pressure is established, and the influence law of the piston cylinder volume and the criti- cal diameter of air hole on the pressure change of piston cylinder and the aeration time are analyzed. The results show that the aeration time increases with the decrease of the critical diameter of air hole and is proportional to the volume of the piston cylinder. The value of the piston cylinder volume and the critical diameter of air hole are close to the critical value and the aerodynamic separation performance of the pis- ton-type separation device is more reliable.