第40卷2023年第s1期上海航天(中英文)AEROSPACESHANGHAI(CHINESE&ENGLISH)火箭液体末子级精准钝化排放设计及飞行验证张成1,于泽游1,赵俊淇1,张众1,王和平2,古艳峰1(1.上海宇航系统工程研究所,上海201109;2.上海航天技术研究院,上海201109)摘要:火箭末子级搭载留轨应用系统是实现火箭末子级二次利用的重要手段,是空间资源利用的创新途径之一。为满足留轨应用系统在较小控制能力下具备快速在轨稳定应用的能力,本文围绕推进剂钝化排放机理开展仿真研究,设计了火箭末子级精准钝化排放飞行程序,改进了排放管路布局,从而降低留轨应用系统在自主控制前火箭的排放干扰,提供相对稳定的初始姿态条件。飞行试验结果表明:火箭末子级可为留轨应用系统俯仰、偏航、滚转通道提供0.4(°)/s以内的稳定姿态,优于留轨系统单轴1(°)/s的设计要求;排放程序设计合理、正确,排放管路改进有效,满足末子级钝化的要求。关键词:火箭;末子级;精准钝化排放;留轨系统;姿态角速度中图分类号:V438+.1文献标志码:ADOI:10.19328/j.cnki.2096⁃8655.2023.s1.003DesignandVerificationofPreciseDischargeProcessofUpperStageofLaunchVehicleZHANGCheng1,YUZeyou1,ZHAOJunqi1,ZHANGZhong1,WANGHeping2,GUYanfeng1(1.ShanghaiAerospaceSystemEngineeringInstitute,Shanghai201109;2.ShanghaiAcademyofSpaceflightTechnology,Shanghai201109)Abstract:Therailsystemontheupperstageofthelaunchvehicleisacriticalwaytorealizethereutilizationoftheupperstageandcanbeoneoftheinnovativewaystoutilizespaceresources.Aprecisedischargeprogramoftheupperstagewasproposedforthefirsttimebasedontheexistingflightprocedure,whichaimedtoimprovetheabilityofstabilizationandapplication.Itcouldeliminatethedischargeinterferenceandprovideastableandaccurateinitialconditionfortherailsystemontheupperstageutilizingposturestabilizationprogramminganddischargepipeoptimization.Theflightresultshowedthattheprecisedischargeprogramwasreasonableandappropriate;thedischargepipeoptimizationwaseffective;andtheprecisemissionprogramappliedcouldprovideanattitudecontrolaccuracywithin0.4(°)/sontherateofpitch,yaw,androll,whichwasbetterthantheindexrequirementsof1(°)/sonthreedimensions.Keywords:launchvehicle;t...