Elastomeric tuned vibration absorber

Details Elastomeric tuned vibration absorber Elastomeric tuned vibration absorber

1997-11-26

1999-11-16

Poon, Peter M.

Aeronautics and astronautics

Aircraft structure

Fuselage and body construction

267136, 188379, B64C 100, F16M 100, F16F 710

Patent

active

059842334

ABSTRACT:
A tuned vibration absorber includes a mounting plate having at least two, and alternatively four, mounting holes in spaced relationship from a longitudinal center axis of the plate. An elastomeric spring is bonded to the mounting plate. A main tuning mass is bonded to the elastomeric spring opposite the mounting plate, and fine tuning masses are riveted directly onto the main tuning mass. The elastomeric spring and main mass both have a rectangular profile to maintain a low profile height from the mounting plate. A cover is formed of a single sheet of metal bent to form a rectangular box with one open side. The cover includes mounting flanges with holes that align with the mounting holes on the mounting plate. For mounting the vibration absorber on a stiffening ring of an aircraft frame, a spacing plate is positionable between a portion of the mounting plate and the stiffening rib of an aircraft frame, and adjacent to an overlapping secondary stiffening ring to provide a flat mounting surface.

REFERENCES:
patent: 3102722 (1963-09-01), Hamontre
patent: 4527371 (1985-07-01), Hagbjer
patent: 5052530 (1991-10-01), Shimazaki
patent: 5135204 (1992-08-01), Funahashi
patent: 5641133 (1997-06-01), Toossi
patent: 5845236 (1998-12-01), Jolly et al.
Lord Corporation, Aerospace Products, Product Information, Tuned Vibration Absorbers--A Quiet Revolution, PB-6004, Aug. 1992.

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