【摘要】 讨论了双级延伸喷管的动特性，确定了贮气瓶内压强、放气时间与延伸喷管运动参数之间的关系，建立了通用的数学模型，为供气系统和延伸喷管各部件的设计提供了理论依据。更多还原

【Abstract】 Analyses of kinematics of double extendible nozzle and properties of actuating system are presented.The relations of pressure and expanding time of gas cylinder and motion data of expanding cone are approached.A general purpose mathematical model is built.It provides the reliable theoretical basis for actuating system desing and dynamics analysis of the parts更多还原