Counterweighted blade damper

Details Counterweighted blade damper Counterweighted blade damper

1977-12-28

1980-03-11

Casaregola, Louis J.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

416500, 415119, F01B 530, F01B 526

Patent

active

041926331

ABSTRACT:
A segmented damper is provided with a lower dovetail portion which is insertable into a dovetail slot for radial retention and which is engageable on its face by a blade retainer for axial retention, such that the damper is pivotable in an axial plane. The damper upper portion has on its one side a flange for engaging the blade shank rail and on its other side a flange for shifting the damper center of gravity axially outward from the lower pivot point. Centrifugal force, occasioned by rotation of the disk and damper, then causes the damper to pivot and impart an axial force against the blade to thereby dampen vibrations.

REFERENCES:
patent: 2999668 (1961-09-01), Howald et al.
patent: 3181835 (1965-05-01), Davis
patent: 3700354 (1972-10-01), Memery
patent: 3751183 (1973-08-01), Nichols et al.
patent: 3768924 (1973-10-01), Corsmeier et al.
patent: 3814539 (1974-06-01), Klompas

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