摘要
临界转速是液体火箭发动机涡轮泵转子系统的主要动力特性参数之一,随着转子系统工作转速的不断提高,临界转速对保证发动机安全可靠运行至关重要。建立涡轮泵转子系统的动力学模型,计算其临界转速,分别研究泵端和涡轮端轴承支承刚度和轴向位置对临界转速的影响,为液体火箭发动机涡轮泵转子系统结构设计、诊断与维护提供理论依据。
The critical speed is one of the major dynamic characteristics parameters of rotor system for liquid rocket engine turbo-pump. With the rotating speed increase, the critical speed is very important to ensure the safe and reliable operation of the engine A dynamic model for rotor system is established in this paper. The critical speed is computed. The effect of axial position and supporting stiffness of the bearings near the pump and the turbine is respectively researched on the critical speed of the rotor system. This study provides a theory for optimum design, fault diagnosis and safe operation of the turbo-pump rotor in the liquid rocket engine.
出处
《导弹与航天运载技术》
北大核心
2013年第3期18-22,共5页
Missiles and Space Vehicles
关键词
涡轮泵
转子系统
临界转速
支承刚度
轴向位置
Turbo-pump
Rotor system
Critical speed
Supporting stiffness
Axial position
作者简介
窦唯（1977-），男，博士，高级工程师，主要研究方向为转子动力学及故障诊断技术
