Blade to blade vibration damper

Details Blade to blade vibration damper Blade to blade vibration damper

1984-07-31

1987-01-27

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416193A, 416500, F01D 510

Patent

active

RE0323390

ABSTRACT:
Effective damping of blade vibratory energy is sought by the apparatus described herein. The concepts relate specifically to what is known as blade to blade damping as is distinguished from blade to ground damping.
The dampers employed have a "T" shaped cross section geometry and are designed to extend circumferentially on an engine rotor between the platform sections of each pair of rotor blades. The dampers are of extreme light weight such that the slipload forces required to generate sliding contact between the damper and the blade platforms is low.

REFERENCES:
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patent: 3181835 (1965-05-01), Davis
patent: 3723023 (1973-03-01), Crick
patent: 3748060 (1973-07-01), Hugoson et al.
patent: 3881844 (1975-05-01), Hennessey et al.
patent: 3888601 (1975-06-01), Glassburn
patent: 4101245 (1978-07-01), Hess et al.
patent: 4182598 (1980-01-01), Nelson
patent: 4343594 (1982-08-01), Perry
patent: 4355957 (1982-10-01), Sifford et al.

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