Rotor head for a twin-rotor helicopter

Details Rotor head for a twin-rotor helicopter Rotor head for a twin-rotor helicopter

2011-03-22

2011-03-22

Nguyen, Ninh H (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Distally supported on radial arm

C416S500000

Reexamination Certificate

active

07909579

ABSTRACT:
A rotor head includes a hub and two joint members. The hub has opposite tubular end portions, each formed with a socket that extends inwardly from an end face thereof along a tube axis and that has inner and outer socket sections. Each of the joint members includes a link and a vibration absorbing component. The link has a hub coupling segment retained rotatably in the inner socket section of a respective socket, an intermediate segment extending from the hub coupling segment and disposed movably in the outer socket section of the respective socket, and a blade coupling segment extending from the intermediate segment and outwardly of the outer socket section. The vibration absorbing component is mounted on the intermediate segment, and is disposed in the outer socket section.

REFERENCES:
patent: 2418030 (1947-03-01), Hirsch
patent: 3637322 (1972-01-01), Kannamuller et al.
patent: 3972491 (1976-08-01), Ferris et al.
patent: 4306836 (1981-12-01), Mayerjak

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