Title:
HELICOPTER ROTOR
Document Type and Number:
Japanese Patent JP04228399
Kind Code:
A
Abstract:
PURPOSE: To provide a flexbeam helicopter rotor having an improved snubber- vibration damper for positioning the flexbeam spar relative to a torque tube.
CONSTITUTION: Snubber-vibration dampers 52, 53 are elastomeric (elastic polymer such as rubber) bearings having a spherical part and a flat part. Laminates 76, 78, 80 forming the bearings are continuous and selectively preloaded and of selected material to provide increased fatigue life, size reduction, reduced laminate stress concentration and reduced critical design stress in the snubber- vibration damper.
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Inventors:
Byrnes, Francis E.
Anna, Frank D. P.
Anna, Frank D. P.
Application Number:
JP1991000099386
Publication Date:
August 18, 1992
Filing Date:
April 04, 1991
Export Citation:
Assignee:
UNITED TECHNOL CORP
International Classes:
B64C27/48; B64C27/35; B64C27/51; B64C27/00; B64C27/32; (IPC1-7): B64C27/48; B64C27/51