Solid-propellant and liquid-propellant launch vehices have their own characteristics,both playing an im-portant role in space transportation systems of space powers.This paper reviews and summarizes the development hi...Solid-propellant and liquid-propellant launch vehices have their own characteristics,both playing an im-portant role in space transportation systems of space powers.This paper reviews and summarizes the development history of solid-propellant launch vehicles,and analyzes their technical characteristics including multiple stages,large payloads,complex separation,diverse operation modes,fast response,and mission adaptability as well as unique ad-vantages in launch activities.This paper analyzes and proposes four development laws for solid-propellant launch vehi-des,including improving comprehensive performance,infusing heritage with innovation,unitization and seriation,and optimizing power systems.Finally,this paper proposes the opportunities and challenges faced by solid-propellant launch vehicles based on market demands.展开更多
为了研究底排点火具在弹丸出炮口时瞬态燃烧特性及工作性能,采用半密闭爆发器模拟炮口压力突降过程,借助高速录像系统,开展了高降压速率条件下底排点火具燃烧特性的实验研究。结果表明,在高速降压过程中,底排点火具燃烧受到强烈瞬态扰...为了研究底排点火具在弹丸出炮口时瞬态燃烧特性及工作性能,采用半密闭爆发器模拟炮口压力突降过程,借助高速录像系统,开展了高降压速率条件下底排点火具燃烧特性的实验研究。结果表明,在高速降压过程中,底排点火具燃烧受到强烈瞬态扰动。不同药剂的点火具抗干扰性能不同,其中以硝酸钡为药剂主成分的点火具和以镁粉+PTFE为药剂主成分的点火具燃烧性能稳定,以氢化锆、二氧化铅为药剂主成分的点火具工作稳定性较差,火焰持续时间标准差为523 m s,点火具喷孔堵塞严重。展开更多
文摘Solid-propellant and liquid-propellant launch vehices have their own characteristics,both playing an im-portant role in space transportation systems of space powers.This paper reviews and summarizes the development history of solid-propellant launch vehicles,and analyzes their technical characteristics including multiple stages,large payloads,complex separation,diverse operation modes,fast response,and mission adaptability as well as unique ad-vantages in launch activities.This paper analyzes and proposes four development laws for solid-propellant launch vehi-des,including improving comprehensive performance,infusing heritage with innovation,unitization and seriation,and optimizing power systems.Finally,this paper proposes the opportunities and challenges faced by solid-propellant launch vehicles based on market demands.
文摘为了研究底排点火具在弹丸出炮口时瞬态燃烧特性及工作性能,采用半密闭爆发器模拟炮口压力突降过程,借助高速录像系统,开展了高降压速率条件下底排点火具燃烧特性的实验研究。结果表明,在高速降压过程中,底排点火具燃烧受到强烈瞬态扰动。不同药剂的点火具抗干扰性能不同,其中以硝酸钡为药剂主成分的点火具和以镁粉+PTFE为药剂主成分的点火具燃烧性能稳定,以氢化锆、二氧化铅为药剂主成分的点火具工作稳定性较差,火焰持续时间标准差为523 m s,点火具喷孔堵塞严重。