Vibration damping shroud for a turbomachine vane

Details Vibration damping shroud for a turbomachine vane Vibration damping shroud for a turbomachine vane

1994-08-01

1995-05-02

Look, Edward K.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

415119, F01D 2504, F01D 902

Patent

active

054113709

ABSTRACT:
A gas turbine engine (10) has a row of fan stator vanes (18) extending radially across a flow path (20) and joined to inner and outer cases (22) and (24). A vibration damping shroud (78) includes a radially extending chamber (84) for receiving one end of each stator vane in a primary vibration damping material (86). At least one pin receiving cavity (88), independent of the chamber, contains a secondary vibration damping material (92) which slidably engages a corresponding support pin (72) extending from the adjacent case (22) to anchor the vane to the case. The independence of the chamber and the cavity enables the use of different primary and secondary materials capable of satisfying conflicting performance requirements.

REFERENCES:
patent: 3778184 (1973-12-01), Wood
patent: 3932056 (1976-01-01), Tai
patent: 4305696 (1981-12-01), Pask
patent: 4655682 (1987-04-01), Kunz et al.
patent: 5074752 (1991-12-01), Murphy et al.
patent: 5328327 (1994-07-01), Naudet
patent: 5346362 (1994-09-01), Bonner et al.

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