Ducted Anti-torque rotor with floating blades
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United States of America Patent
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-
Aug 6, 1996
Grant Date -
N/A
app pub date -
Sep 1, 1994
filing date -
May 4, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In the rotor, the pitch lever of each blade is connected to the tab of the pitch control spider by a ball joint mounted on a wrist pin and received with clearance in an oblong opening in a ring. The axially offset bearing surfaces of the cuff of the blade are mounted with a radial clearance in the bearings of the hub on which they swivel about the pitch axis of the blade. These radial clearances enable contacts of the ball joint against the edge of the opening on the side of the ends of its minor axis, but prevent these contacts on the side of the ends of the major axis of the oblong opening.
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