Vibration Damping Apparatus for Hydrostatic Seal of Gas Turbine Engine

摘要

A hydrostatic seal and vibration damping apparatus for a gas turbine engine adapted to reduce vibrations during cold engine start-ups is disclosed. In one disclosed configuration, the vibration damping apparatus is comprised of a temperature sensitive control ring having a relatively high coefficient of thermal expansion adapted to expand quickly at relatively low temperatures to protect the hydrostatic seal during such gas turbine engine startups. At operational temperatures, the control ring is adapted to become separated from the hydrostatic sea.

主权项

1. A hydrostatic seal and vibration damping assembly for a gas turbine engine, comprising:
a hydrostatic seal having a shoe; and a vibration damping apparatus operatively associated with the shoe, the vibration damping apparatus having a different coefficient of thermal expansion than the hydrostatic shoe.