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US 11,447,241 B2Granted
Scissorless swashplate uniball
AssigneeLockheed Martin Corporation
InventorJohn C. Cox
Life of this patent
Estimating the term…
Abstract
A swashplate assembly of a rotary wing aircraft includes a first component, a second component arranged concentrically with the first component, and a bearing disposed between the first component and the second component. The bearing includes a spherical bearing and at least one bearing roller element and is operable to transmit torque between the first component and the second component.
Claims18
A swashplate assembly of a rotary wing aircraft comprising:
- a first component;
- a second component arranged concentrically with the first component and;
- a bearing disposed between the first component and the second component and including a spherical bearing and at least one bearing roller element, wherein the bearing is operable to transmit torque between the first component and the second component;
- wherein at least one first groove is formed in an outer surface of the first component and at least one second groove is formed in an inner surface of the second component, the at least one bearing roller element being arranged within the at least one first groove and the at least one second groove.
1 more element
A rotor system comprising:
- a rotor shaft defining an axis of rotation;
- at least one rotor blade operably coupled to the rotor shaft, the at least one rotor blade being rotatable about the axis of rotation;
- and
- a swashplate assembly including:
- a swashplate guide mounted about the rotor shaft;
- a rotationally stationary swashplate pivotally mounted about a central pivot point defined along the axis of rotation;
- a rotational swashplate which defines a rotor pitch control point, said rotor pitch control point defined along a plane which passes through said central pivot point;
- and
- a bearing including a spherical bearing and at least one bearing roller element, wherein the bearing transmits torque between the swashplate guide and one of the stationary swashplate and the rotational swashplate;
- wherein at least one first groove is formed in an outer surface of the swashplate guide and at least one second groove is formed in an inner surface of the one of the stationary swashplate and the rotational swashplate, the at least one bearing roller element being arranged within the at least one first groove and the at least one second groove.
7 more elements
Dependencies are inferred from the claim text.