High damping flexible propeller/impleller

Details High damping flexible propeller/impleller High damping flexible propeller/impleller

1990-03-23

1992-04-28

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Laminated, embedded member or encased material

416224, 416241R, F04D 2132

Patent

active

051082624

ABSTRACT:
This invention is directed to a high damping and damage tolerant flexible opeller assembly and a method for the production thereof. The high damping and damage tolerant flexible propeller has a unitary hub having an axis of rotation and adapted for mounting on a rotatable shaft, multiple spokes extending from the hub portion, each spoke at its tip portion being made of a high density material having the shape that conforms to that of the specific propeller, each spoke at its inner portion from the tip portion to the hub portion being made of multidimensional fibers, the inner portion of each spoke being made of a multidimensional fiber preform being impregnated with a highly viscoelastic matrix material.

REFERENCES:
patent: 1614186 (1927-01-01), Clay
patent: 2404678 (1946-07-01), Wuensch
patent: 2435604 (1948-02-01), Rorden
patent: 4025231 (1977-05-01), Kochevar et al.
patent: 4097193 (1978-07-01), Brunsch et al.
patent: 4671739 (1987-06-01), Read et al.
patent: 4797066 (1989-01-01), Stromberg
patent: 4954377 (1990-09-01), Fischer et al.

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