关键词: 液体推进剂火箭发动机;涡轮转子;转子速度;传递矩阵法＋;数值仿真

Abstract: According to the conditions of acting force and displacement,the transfer matrices of the shaft,plate and support were respectively derived.The calculation equations of frequency and amplitude were deduced based on the overall arrangement of rotor structure.From this,with the critical rotation speed and amplitude for every step solved.the methods of compound stiffness for calculating the vibration damping and support elasticity were given.The calculated result specifies that elasticity,damping and mass of support have important influence upon the vibration properties of rotor(critical rotation speed and amplitude)and that the matching of rotor and supports can play adjust and controll the vibration properties of the rotor.

Key words: Liquid propellant rocket engine;Turbine rotor;Rotor speed;Transfer matrix method +;Numerical simulation