Broad Spectrum Vibration Damper Assembly Fixed Stator Vanes of Axial Flow Compressor.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Pagination or Media Count:
Undesirable vibrations of stator airfoil vanes circumferentially disposed in annular rows, and fixed at their ends by a sectored outer shroud and a sectored inner shroud, in an axial flow compressor of gas turbine engine are damped by a damper assembly that is fitted into, and is frictionally engaged, in the sectored inner shroud which, in turn, is segmented to assist in this damping. The damper assembly includes A metal seal strip member having indentations a metal sine wave-shaped damper and spring member that is complementary to, and is engaged with, the seal strip member and, a honeycomb member affixed to the bottom surface of the seal strip member. The vibrations cause movement of the shroud segments which, in turn, cause rubbing contact and, the resulting friction heat energy is conducted through the metal components of the damper assembly to the thermal sink that is the through-flowing air in the compressor. Author
- Jet and Gas Turbine Engines