Vibration control assembly
A vibration control assembly for an aircraft includes a housing operatively coupled to the aircraft. Also included is a cage disposed within an interior region of the housing, the cage rotatable within the housing about a first axis. Further included is a gyroscope wheel disposed within the cage and rotatable about a second axis other than the first axis, wherein a controllable moment is imposed on the aircraft upon rotation of the gyroscope wheel to counter vibratory moments produced by the vehicle. Yet further included is a control assembly at least partially surrounding the gyroscope wheel for controlling the controllable moment. The control assembly includes a structure having an inner surface, a track disposed along the inner surface, and an arm operatively coupled to the gyroscope wheel, the arm having an end disposed within the track, the gyroscope wheel angularly displaceable upon translation of the arm along the track.
1. A vibration control assembly for an aircraft comprising:
a housing operatively coupled to the aircraft;
a cage disposed within an interior region of the housing, the cage rotatable within the housing about a first axis;
a gyroscope wheel disposed within the cage and rotatable about a second axis other than the first axis, wherein a controllable moment is imposed on the aircraft upon rotation of the gyroscope wheel to counter vibratory moments produced by the vehicle; and
a control assembly at least partially surrounding the gyroscope wheel for controlling the controllable moment, the control assembly comprising:
a structure having an inner surface;
a track disposed along the inner surface; and
an arm operatively coupled to the gyroscope wheel, the arm having an end disposed within the track, the gyroscope wheel angularly displaceable upon translation of the arm along the track.
2. The vibration control assembly of claim 1 , wherein the structure comprises a domed geometry.
3. The vibration control assembly of claim 1 , wherein the structure rotates synchronously with the gyroscope wheel.
4. The vibration control assembly of claim 1 , wherein the track extends along the inner surface of the structure in a spiral path.
5. The vibration control assembly of claim 1 , wherein the gyroscope wheel is angularly displaceable over a 90 degree range.
6. The vibration control assembly of claim 1 , wherein the control assembly further comprises:
a fin extending from an outer surface of the structure; and
a braking mechanism disposed proximate the fin and engageable therewith to control a rotational speed of the structure.
7. The vibration control assembly of claim 6 , wherein the fin extends around at least a portion of a base of the structure.
8. The vibration control assembly of claim 6 , wherein the braking mechanism is an electric braking mechanism and is a regenerative brake that is configured to store energy during braking.
9. The vibration control assembly of claim 8 , further comprising a motor operatively coupled to the cage with a motor shaft to rotate the cage and to control precession of the vibration control assembly.
10. The vibration control assembly of claim 9 , wherein the motor is operatively coupled to the gyroscope wheel and drives rotation of the gyroscope wheel.
11. The vibration control assembly of claim 9 , wherein the motor is at least partially powered by energy generated by the regenerative brake of the braking mechanism.
12. A method of controlling vibration on an aircraft comprising:
rotating a cage about a cage axis, the cage disposed within a housing;
rotating a gyroscope wheel about a gyroscope wheel axis that is non-parallel to the cage axis, the gyroscope wheel disposed within the cage;
producing a moment on the aircraft upon rotating the gyroscope wheel, wherein the cage and gyroscope wheel partially form a first vibration control assembly; and
controlling the moment produced by controlling an angular orientation of the gyroscope wheel,
wherein the angular orientation of the gyroscope wheel is controlled by translating an arm operatively coupled to the gyroscope wheel along a track formed along an inner surface of a structure that partially surrounds the gyroscope wheel.
13. The method of claim 12 , wherein the structure and the gyroscope wheel are rotated synchronously.
14. The method of claim 12 , wherein the rotational speed of the structure is controlled with a braking mechanism that applies a braking force to the structure.
15. The method of claim 14 , wherein a power source is provided power with energy generated by the braking force applied to the structure.
16. The method of claim 12 , further comprising controlling the moment produced on the aircraft by varying a rotational speed of the gyroscope wheel.
17. The method of claim 12 , wherein the track has a spiral configuration.
18. The method of claim 12 , wherein the structure includes a fin located proximate a base of the structure, and wherein the fin is configured to extend from an outer surface of the structure.
19. The method of claim 12 , wherein at least one of the track or the arm is coated with a low-friction material.