Vibration control assembly
AssigneeLockheed Martin Corporation
InventorsWilliam A. Welsh, Yuriy Gmirya, Damaris R. Zachos
Life of this patent
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Abstract
A vibration control assembly includes a housing having an interior region and an inner mass including a cage disposed within the interior region of the housing and being rotatable within the housing about a first axis and a gyroscope wheel disposed within the cage and rotatable about a second axis other than the first axis. At least one driving source includes a stator and is operable to interact with a magnetic field of the inner mass to drive rotation of the inner mass about at least one of the first axis and the second axis, wherein the at least one driving source is mounted within the interior region of the housing.
Claims17
An aircraft comprising:
- an airframe;
- a main rotor system mounted to the airframe, wherein the main rotor system is rotatable about a rotor axis and which imparts a vibration into the airframe;
- and
- at least one vibration control assembly operably coupled to at least one of the main rotor system and the airframe to suppress the vibration, the at least one vibration control assembly including:
- a housing having an interior region;
- an inner mass disposed within the interior region of the housing, the inner mass rotatable about a first axis and including a second portion rotatable about a second axis;
- and
- a driving source mounted within the interior region of the housing, the driving source operable to interact with a magnetic field of the inner mass to rotate the inner mass about the first axis;
- wherein the driving source is operable to drive rotation of the second portion about the second axis, wherein the driving source is configured to control a rotational speed of the second portion about the second axis and a rotational speed of the inner mass about the first axis, wherein the rotational speed of the second portion does not depend on the rotational speed of the inner mass.
A vibration control assembly comprising:
- a housing having an interior region;
- an inner mass including:
- a cage disposed within the interior region of the housing, wherein the cage is rotatable within the housing about a first axis;
- and
- a gyroscope wheel disposed within the cage and rotatable about a second axis other than the first axis;
- a first driving source comprising a stator operable to interact with a magnetic field of the inner mass to drive rotation of the inner mass about the first axis, wherein the first driving source is mounted within the interior region of the housing;
- and
- a second driving source operatively coupled to the gyroscope wheel to rotate the gyroscope wheel about the second axis, wherein the second driving source is powered wirelessly and rotates with the cage about the first axis.
Dependencies are inferred from the claim text.