Offset stacked yoke hub for tiltrotor aircraft
First Claim
1. A rotor hub of a tiltrotor aircraft, comprising:
- a first configuration of two or more yokes arranged in a first plane about a mast of the tiltrotor aircraft and having substantially equal angular spacing therebetween;
a second configuration of an equal number of yokes as the first configuration, the equal number of yokes being arranged in a second plane about the mast of the tiltrotor aircraft and having substantially equal angular spacing therebetween;
wherein the second plane is substantially parallel to and axially offset from the first plane; and
wherein a portion of each yoke in the first configuration overlaps with a portion of each azimuthally adjacent yoke in the second configuration; and
a plurality of mounting plates disposed about the rotor hub, wherein each of the plurality of mounting plates includes a plurality of mounting holes,wherein the number of mounting holes disposed in each of the plurality of mounting plates equals a total quantity of both the configuration yokes and the second configuration yokes.
1 Assignment
0 Petitions
Accused Products
Abstract
A tiltrotor rotor hub comprises first and second configurations of yokes arranged in two parallel and axially offset planes, each having an equal number of two or more yokes substantially equally spaced about a mast, wherein a portion of each yoke overlaps with a portion of each azimuthally adjacent yoke. Another tiltrotor rotor hub is selectively positionable for operation in helicopter/airplane/transition modes and comprises substantially parallel and axially offset first and second planes, each containing a plurality of blade yokes arranged about a central axis and a portion of each yoke overlaps with a portion of each azimuthally adjacent yoke. Another tiltrotor rotor hub is coupled to a tiltrotor mast and comprises a stacked arrangement of blade yokes wherein a portion of each yoke overlaps with a portion of each azimuthally adjacent yoke, and a plurality of mounting components coupling each yoke to the overlapping azimuthally adjacent yoke.
20 Citations
20 Claims
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1. A rotor hub of a tiltrotor aircraft, comprising:
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a first configuration of two or more yokes arranged in a first plane about a mast of the tiltrotor aircraft and having substantially equal angular spacing therebetween; a second configuration of an equal number of yokes as the first configuration, the equal number of yokes being arranged in a second plane about the mast of the tiltrotor aircraft and having substantially equal angular spacing therebetween; wherein the second plane is substantially parallel to and axially offset from the first plane; and wherein a portion of each yoke in the first configuration overlaps with a portion of each azimuthally adjacent yoke in the second configuration; and a plurality of mounting plates disposed about the rotor hub, wherein each of the plurality of mounting plates includes a plurality of mounting holes, wherein the number of mounting holes disposed in each of the plurality of mounting plates equals a total quantity of both the configuration yokes and the second configuration yokes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A rotor hub of a tiltrotor aircraft, comprising:
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a plurality of blade yokes arranged in a first plane about a central axis; a plurality of blade yokes arranged in a second plane about the central axis; wherein the second plane is substantially parallel to and axially offset from the first plane; wherein a portion of each yoke in the first plane overlaps with a portion of each azimuthally adjacent yoke in the second plane; and wherein the rotor hub is selectively positionable for operation of the tiltrotor aircraft in helicopter mode, airplane mode, and transition modes there between; a plurality of mounting plates disposed about the rotor hub, wherein each of the plurality of mounting plates includes a plurality of mounting holes; and a quantity of mounting holes disposed in each of the plurality of mounting plates equal to a total quantity of both the plurality of blade yokes arranged in the first plane and the plurality of blade yokes arranged in the second plane. - View Dependent Claims (14, 15, 16, 17)
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18. A rotor hub of a tiltrotor aircraft, comprising:
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a plurality of blade yokes configured in a stacked arrangement such that a portion of each yoke in a first axial plane overlaps with a portion of each azimuthally adjacent yoke in a second axial plane; a plurality of mounting components including a plurality of mounting plates and a plurality of mounting holes, each mounting component coupling each yoke in the first axial plane to the overlapping azimuthally adjacent yoke in the second axial plane; wherein the rotor hub is coupled to a mast of the tiltrotor aircraft; and a quantity of mounting holes disposed in each mounting plate equal to a total quantity of the plurality of blade yokes in both the first axial plane and the second axial plane. - View Dependent Claims (19, 20)
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Specification