摘要
为避免硝酸羟胺(HAN)基液体推进剂传统催化点火的延迟时间长、催化剂失活等缺点,同时充分发挥HAN基液体推进剂高能量密度、高比冲等优点,设计并搭建了HAN基液体推进剂静置状态和流动状态下电点火实验系统。制备了4种新型高能HAN基液体推进剂,并开展了静置状态和流动状态下电点火及稳定燃烧实验研究,对比了不同组份下HAN基液体推进剂点火及稳定燃烧的影响。甲醇的添加抑制了推进剂的活性,推进剂分解过程变得缓慢且没有观察到持续稳定燃烧的火焰。掺混15%乙腈的推进剂在火焰高度和点火延迟时间等方面都表现出优异性能,流动状态下在关闭加载电压后能通过自分解维持火焰的燃烧。
To break through avoid the shortcomings of long delay time and catalyst deactivation of traditional catalytic ignition for hydroxylamine nitrate(HAN)-based liquid propellant,and give full play to the advantages of high energy density and high specific impulse of HAN-based liquid propellant.The experimental systems of electric ignition for static and flowing state of HAN-based liquid propellants were designed and constructed.Four new kinds of high-energy HAN-based liquid propellants were prepared.The electric ignition and stable combustion experiments of propellants for static and flow state were studied.The effects of different components on the ignition and stable combustion of HAN-based liquid propellants were compared.The addition of methanol inhibited the activity of the propellant.Meanwhile,the decomposition process of the propellant became slow and no stable combustion flame was observed.The propellant mixed with 15%acetonitrile showed excellent performance in flame height and ignition delay time,and it could maintain the flame combustion by self-decomposition after closing the voltage for the flow state.The research results provide reference for the design of space engine structure based on the electric ignition method.
作者
金宝志
申连华
李国岫
李洪萌
鲍世国
JIN Baozhi;SHEN Lianhua;LI Guoxiu;LI Hongmeng;BAO Shiguo(School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044,China;Beijing Key Laboratory of New Energy Vehicle Powertrain Technology,Beijing Jiaotong University,Beijing 100044,China;Beijing Key Laboratory of Research and Application for Aerospace Green Propellants,Beijing Institute of Aerospace Testing Technology,Beijing 100074,China)
出处
《火箭推进》
CAS
北大核心
2024年第5期96-105,共10页
Journal of Rocket Propulsion
基金
国家自然科学基金(52176097)
中央高校基本科研业务费(2022JBZY033)。
关键词
空间发动机
硝酸羟胺基液体推进剂
电点火
甲醇
乙腈
space engine
hydroxylamine nitrate based liquid propellant
HAN
electric ignition
methanol
acetonitrile
