关键词: 燃气涡轮发动机;喘振;转子;瞬态响应;旋转失速

Abstract: Based on the analysis of distributions of the surge force loaded on the rotor in time and space domain,an opinion that the existence of unbalance of pressure along the circulation brings the force on the rotor in the radial direction and results in the radial vibration of the rotor system was introduced A data processing method of determining the radial rotary aerodynamic loading using the test data of pressure fluctuation was improved An analysis software for computing the dynamical character of complex rotor system was developed based on the FEM method,and the transient response of rotor system caused by surge load was investigated The investigation shows that the aerodynamic loading caused by surge will result in the low frequency vibration of alternate forced vibration and free clamped vibration in the rotor system

Key words: Gas turbine engine;Surge;Rotor;Transient response;Rotating sta?