| US 7,585,153 B1 | ||
| Upper rotor control system for a counter-rotating rotor system | ||
| David N. Schmaling, Southbury, Conn. (US); and Pedro L. Cabrera, West Haven, Conn. (US) | ||
| Assigned to Sikorsky Aircraft Corporation, Stratford, Conn. (US) | ||
| Filed on Aug. 11, 2006, as Appl. No. 11/502,668. | ||
| Int. Cl. B64C 27/80 (2006.01) | ||
| U.S. Cl. 416—129 [416/130; 416/168 R] | 17 Claims |
| 1. A rotor control system comprising:
a control rod which is rotationally fixed;
a collective servo assembly mounted to said control rod to axially displace said control rod along a rotor shaft axis of rotation;
an X-Y positioner assembly displaced from said collective servo assembly, said X-Y positioner assembly mounted about said
control rod to tilt said control rod relative said rotor shaft axis of rotation;
a pitch beam mounted to said control rod for rotation relative to said control rod;
a duplex bearing control rod linkage between said control rod and said pitch beam to accommodate said tilt of said pitch beam
relative said control rod; and
a rotational bearing between said control rod and said pitch beam to accommodate said rotation between said control rod and
said pitch beam.
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