两级推进单轨火箭橇结构与弹道设计  

Structure and trajectory design of two-stage monorail rocket sleds

作　　者：夏有财 李俊耀 张浩 刘奎显 XIA Youcai;LI Junyao;ZHANG Hao;LIU Kuixian(China Huayin Ordnance Test Center,Huayin 714200,China)

机构地区：[1]中国华阴兵器试验中心,陕西华阴714200

出　　处：《兵器装备工程学报》2022年第S02期46-49,58,共5页Journal of Ordnance Equipment Engineering

摘　　要：为了在现有条件下提高火箭橇试验速度,设计了两级推进单轨火箭橇车结构,对结构关键零部件进行了强度校核,关键结构件安全系数均大于3,满足强度和可靠性要求;根据试验需求对两级单轨橇车运动弹道进行设计,通过选取合适的橇车运动弹道算法计算设计弹道,得到加速度、速度、位移时间曲线,结果表明:一级发动机工作结束后两级橇车组合体运动速度为130.42 m/s,位移159 m,二级发动机工作结束后二级橇车速度达到327.35 m/s,计算结果对后续试验开展具有工程指导意义。A rocket sled is a modern ground test facility.In order to improve its test speed under the existing conditions,the structure of a two-stage propulsion monorail rocket sled is designed,and its strength of key parts of is checked.It is obtained that the safety factor of key structural parts is greater than 3,which meets the requirements of strength and reliability;according to the test requirements,the motion trajectory of the two-stage monorail sled is designed.The design trajectory is calculated by selecting the appropriate calculation algorithm,the speed displacement and time curve,and the calculation results are analyzed.The results show that,after the work of the primary engine,the speed of the two-stage sled combination is 130.42 m/s and the displacement is 159 m.After the operation of the secondary engine,the speed of the secondary sled reaches 327.35 m/s.The calculation results have certain engineering guiding significance for the follow-up test.

关 键 词：两级火箭橇 火箭橇试验 弹道计算 结构设计 计算方法 

分 类 号：V411.3[航空宇航科学与技术—航空宇航推进理论与工程]