Vibration Character and Aeroelastic Stability Analysis of Real Labyrinth Gas Seals

Labyrinth gas seals are commonly used for aeroengines and other machines.But failures,such as sound machine coupling,vibration mode harmony and aeroelastic flutter,often occur.We analyzed the vibration character and aeroelastic stability of labyrinth gas seals which are used in a real aeroengine.According to the analysis result,we give some useful suggestions.