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.