Viscoelastic vibration damper for engine struts

Details Viscoelastic vibration damper for engine struts Viscoelastic vibration damper for engine struts

1993-10-14

1994-10-18

Look, Edward K.

Rotary kinetic fluid motors or pumps

With sound or vibratory wave absorbing or preventing means...

416500, F01D 510

Patent

active

053562640

ABSTRACT:
The present invention is a viscoelastic damper assembly for a front frame for a gas turbine engine that is removable, reusable, and retrofitable. The viscoelastic damper is disposed within a strut for damping vibration of the strut caused by airstream pressure pulses from first stage fan blades operating at transonic speeds. The viscoelastic damper can be installed in struts on gas turbine engines already in service or during manufacture. Also, the viscoelastic damper can be easily removed and reused when repairs to the front frame are required.

REFERENCES:
patent: 2566701 (1951-10-01), Griese
patent: 2690810 (1954-10-01), Doussain et al.
patent: 2917274 (1959-12-01), Davidson
patent: 3027138 (1962-03-01), Howell et al.
patent: 3791483 (1974-02-01), Vasiljevic
patent: 3966357 (1976-06-01), Corsmeier
patent: 4240250 (1980-12-01), Harris
patent: 4329119 (1982-05-01), Baskin
patent: 4820117 (1989-04-01), Larrabee et al.
patent: 5056738 (1991-10-01), Mercer et al.
patent: 5284011 (1994-02-01), Von Benken
U.S. Patent Appln S/N 06/317,356, filed Nov. 2, 1981, by Vdoviak, et al. "Variable Slot Bypass Injector System".

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