Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Including movement limit stop or damping means
Patent
1985-07-29
1987-02-24
Garrett, Robert E.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Including movement limit stop or damping means
416134A, F03D 704
Patent
active
046454233
ABSTRACT:
Apparatus for damping blade lead/lag motion on a hingeless helicopter rotor assembly, including a hub, blades and flexbeam(s) interposed between the root end of the blades and the hub. Rigid, radial links extend the length of the flexbeams for attachment to the outboard ends thereof. Lead/lag motion at the outboard end of the flexbeam causes flexbeam bending, which is converted to radial translation of the links. This radial translation of the links and likewise the blade lead/lag motion is damped by damper means connected between the inboard ends of the links and the hub.
REFERENCES:
patent: 2620888 (1952-12-01), Avery
patent: 3262407 (1966-07-01), Culver et al.
patent: 3310119 (1967-03-01), Watson
patent: 4378198 (1983-03-01), Petterson
patent: 4419051 (1983-12-01), De Rosa
patent: 4452569 (1984-06-01), Stephan et al.
Ferris Donald L.
Matuska David G.
Garrett Robert E.
Kwon John
Olson A. Dean
Skula E. Richard
United Technologies Corporation
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