Helicopter rotor with articulation means integrated in the root

Details Helicopter rotor with articulation means integrated in the root Helicopter rotor with articulation means integrated in the root

1982-09-24

1985-03-12

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Including movement limit stop or damping means

416134A, 416141, B64C 2738

Patent

active

045041938

ABSTRACT:
The invention concerns a helicopter rotor, the rigid hub (1) of which comprises a central drum (2) which is disposed substantially in line with the rotor mast (3) and which carries an upper plate (4) and a lower plate (6). This rigid hub (1) is connected to the root of each blade (26) by way of a laminated spherical stop (13) and a resilient-return drag brace. Each blade (26) comprises, in the zone of its root, a rigid loop (27) which surrounds the laminated spherical stop (13) in a continuous manner and is engaged in the inner movable fitting (24) of this stop (13) by means of a wedge (30) co-operating with the outer fixed fitting (15) of the stop (13).

REFERENCES:
patent: 4012169 (1977-03-01), Mouille et al.
patent: 4249862 (1981-02-01), Waddington et al.
patent: 4297078 (1981-10-01), Martin
patent: 4304525 (1981-12-01), Mouille
patent: 4342540 (1982-08-01), Lovera et al.
patent: 4361415 (1982-11-01), Aubry
patent: 4369019 (1983-01-01), Lovera et al.

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