Helicopter rotor

Details Helicopter rotor Helicopter rotor

1978-09-07

1980-11-04

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

By actuator eccentric to rotation axis

416114, 416141, 416168R, B64C 2772

Patent

active

042317053

ABSTRACT:
This invention is concerned with helicopter rotor control systems which hitherto have tended to comprise complex assemblies which are costly to manufacture and maintain and which are vulnerable to external damage.
A helicopter rotor is disclosed in which each of a plurality of radially extending rotor blades is attached to the outer end of an individual spindle 19 having its inner end protruding into the interior of a hollow rotor hub structure 12 and supported by bearing means 21 arranged to permit rotational movement of the spindle 19 about its axis. A pitch control lever 22 is attached to the inner end of each spindle 19 and is articulated, through a universal joint, to the upper end of an individual connecting rod 38, 39, 40 and 41, the lower ends of the connecting rods being attached to a common housing 42 having independently rotatable means for connection to helicopter flying controls.

REFERENCES:
patent: 1921805 (1933-08-01), Bordoni
patent: 2086803 (1937-07-01), Hays
patent: 2487953 (1949-11-01), Sznycer
patent: 2493869 (1950-01-01), Hafner
patent: 2663371 (1953-12-01), Magill
patent: 3303888 (1967-02-01), Wolf
patent: 3790301 (1974-02-01), Pedersen et al.
patent: 4080098 (1978-03-01), Watson
patent: 4139331 (1979-02-01), Girodin

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