Flexible swashplate centering member

Details Flexible swashplate centering member Flexible swashplate centering member

1984-08-23

1986-05-13

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Responsive to fixed actuator

416134A, B64C 2735, B64C 27605

Patent

active

045883556

ABSTRACT:
Centering and stabilizing against rotation of a helicopter swashplate stationary ring are provided by spokes that are attached between the airframe and the stationary ring. When the swashplate tilts for cyclic control, the spokes bend and twist. When the swashplate translates for collective control, the spokes are required to lengthen and skew with respect to the swashplate. An elastomeric bearing having a cylindrical component to allow for skew and a shear pad to allow for lengthening attaches each spoke to the swashplate. The invention eliminates the need for the ball joint, standpipe and scissors associated with traditional swashplate centering techniques.

REFERENCES:
patent: 2396038 (1946-03-01), Bossi
patent: 2410545 (1946-11-01), Main
patent: 3558082 (1971-01-01), Bennie
patent: 3933324 (1976-01-01), Ostrowski
patent: 3952546 (1976-04-01), Nakano et al.
patent: 4297080 (1981-10-01), Krauss et al.
patent: 4323332 (1982-04-01), Fradenburgh
patent: 4326834 (1982-04-01), Ostrowski

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