Rotor hub vibration attenuator
AssigneeTextron Innovations Inc.
InventorsJouyoung Jason Choi, David Heverly, Michael Seifert, Michael Smith, Frank Bradley Stamps, Thomas C. Parham, Jr., Amarjit Olenchery Kizhakkepat
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Abstract
A vibration attenuator has a first spinner configured for rotation about a first axis and a first mass coupled to the first spinner for rotation therewith, the first mass being movable radially relative to the first axis between an inner position and an outer position. An actuator is coupled to the first mass for selectively controlling a radial location of the first mass relative to the axis, and a first motor is configured for driving the first spinner in rotation about the first axis.
Claims17
A vibration attenuator, comprising:
- a first spinner configured for rotation about a first axis;
- a first mass coupled to the first spinner for rotation therewith, the first mass being movable radially relative to the first axis between an inner position and an outer position;
- an actuator coupled to the first mass for selectively controlling a radial location of the first mass relative to the first axis;
- a second spinner configured for rotation about a second axis;
- a second mass coupled to the second spinner for rotation therewith, the second mass being movable radially relative to the second axis between an inner position and an outer position;
- an actuator coupled to the second mass for selectively controlling a radial location of the second mass relative to the second axis;
- and
- a first motor for driving the first spinner in rotation about the first axis and the second spinner in rotation about the second axis.
A vibration attenuator, comprising:
- a first spinner configured for rotation about an axis and comprising an eccentric first mass;
- a second spinner configured for rotation about the axis and comprising a an eccentric second mass;
- a first motor for driving the first spinner in rotation about the axis;
- and
- a second motor for driving the second spinner in rotation about the axis;
- wherein the vibration attenuator comprises at least one of:
- a torsion spring coupling the first and second spinners;
- a helical shaft coupling the first and second spinners, at least one of the spinners being capable of translation along the helical shaft for phasing of the spinners;
- stops that engage each other for limiting relative rotation of the spinners;
- and
- a brake selectively coupling the first and second spinners.
A vibration attenuator, comprising:
- a first spinner configured for rotation about a first axis;
- a first mass coupled to the first spinner for rotation therewith, the first mass being movable radially relative to the first axis between an inner position and an outer position;
- an actuator coupled to the first mass for selectively controlling a radial location of the first mass relative to the first axis;
- a second spinner configured for rotation about a second axis;
- a second mass coupled to the second spinner for rotation therewith, the second mass being movable radially relative to the second axis between an inner position and an outer position;
- an actuator coupled to the second mass for selectively controlling a radial location of the second mass relative to the second axis;
- and
- a first motor for driving the first spinner in rotation about the first axis;
- wherein the first and second axes are parallel and the first and second spinners are coplanar.
Dependencies are inferred from the claim text.