Elastomeric damping arrangement

Details Elastomeric damping arrangement Elastomeric damping arrangement

1976-12-17

1978-06-27

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Having wear liner, sheathing or insert

416241A, 416500, B64C 1120

Patent

active

040971937

ABSTRACT:
An elastomeric damping arrangement is constructed to provide a highly efficient damping of the vibrations of a vibration prone member, such as an airfoil, especially a helicopter rotor blade. The damping arrangement is applied directly on or to the vibration prone structural member in the region of dynamic deformation, as an integral component part of the structural member. At least one damping layer is covered by a protecting layer which merges smoothly into the surface of the vibration prone member. The damping layer is made of a viscoelastic material having a high internal damping action. The protecting or cover layer is made of high strength material having a high rigidity in the direction of the occurring damping force.

REFERENCES:
patent: 1842178 (1932-01-01), Kempton
patent: 2426123 (1947-08-01), Sikorsky
patent: 2431184 (1947-11-01), Martin
patent: 3357850 (1967-12-01), Baker
patent: 3796513 (1974-03-01), Jonas
patent: 4006999 (1977-02-01), Brantley

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