Device for controlling the pitch of the blades of a rotorcraft r

Details Device for controlling the pitch of the blades of a rotorcraft r Device for controlling the pitch of the blades of a rotorcraft r

1995-10-06

1997-04-29

Verdier, Christopher

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Responsive to fixed actuator

416168R, B64C 1106, B64C 1132, B64C 27605

Patent

active

056242328

ABSTRACT:
The device comprises, in addition to the conventional non-rotating plate and rotating plate of a swashplates device, a secondary rotating plate which can move in translation with the non-rotating plate but which cannot be inclined, and, for each blade, an articulated link with two levers which are articulated together and the first of which is articulated to the secondary rotating plate. The second lever is also articulated to the pitch rod controlling the corresponding pitch lever, and it is moreover articulated to a stationary point of the rotating plate. The inclinations of the plates give rise to angular manoeuvres of the levers of each link in order to actuate the pitch rod and control the pitch of the corresponding blade.

REFERENCES:
patent: 2997110 (1961-08-01), Adler
patent: 3102597 (1963-09-01), Drees
patent: 3508841 (1970-04-01), Derschmidt
patent: 3729272 (1973-04-01), Lemont
patent: 4227856 (1980-10-01), Verrill et al.

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