Back to results
US 11,492,144 B2Granted
Flywheel having tuned mass dampers
AssigneeRockwell Collins Deutschland GmbH
InventorsMarkus Ehinger, Dirk Henning
Life of this patent
Estimating the term…
Abstract
The invention relates to a flywheel for stabilising the position of a spacecraft, comprising a hub means (1) for fastening the flywheel, a flywheel ring (4), which externally surrounds the hub means (1) circumferentially at a distance, a support means (3) for supporting the flywheel ring (4) on the hub means (1), and a vibration damping device (6, 8) having a tuned mass damper means (8) which is axially movable back and forth relative to the flywheel ring with respect to a rotation axis of the flywheel.
Claims15
A flywheel for stabilizing the position of a spacecraft, comprising:
- a hub means for fastening the flywheel;
- a flywheel ring which externally surrounds the hub means circumferentially at a distance;
- a support means for supporting the flywheel ring on the hub means;
- a vibration damping device with a tuned mass damper means which, with respect to a rotation axis of the flywheel, is axially movable back and forth relative to the flywheel ring;
- and
- centering rollers which abut on an inner diameter of the flywheel ring and center the vibration damping device,
- wherein the tuned mass damper means is fastened on the flywheel ring and/or on the support means by a fastening means,
- wherein the fastening means is designed in such a manner that it enables axial movability of the tuned mass damper means,
- wherein the tuned mass damper means has a plurality of tuned mass damper elements which are held, distributed on a perimeter of the flywheel ring at a distance, by the fastening means.
6 more elements
A flywheel, comprising:
- a hub;
- a flywheel ring externally surrounding the hub circumferentially at a distance;
- a plurality of spokes extending radially outwards from the hub and supporting the flywheel ring;
- two damping rings arranged axially to one another and enclosing distal ends of the spokes between the two damping rings;
- tuned mass damper elements arranged between and fastened on the two damping rings such that the tuned mass damper elements have axial movability;
- and
- centering rollers fastened on top and bottom of the two damping rings,
- wherein the tuned mass damper elements form, in cooperation with the two damping rings, a vibration damping device,
- wherein the vibration damping device, with respect to a rotation axis of the flywheel, is axially movable back and forth relative to the flywheel ring,
- wherein the tuned mass damper elements are distributed on a perimeter of the flywheel ring,
- wherein the tuned mass damper elements are cylindrical radiators firmly held on the two damping rings through a plurality of screws,
- wherein the centering rollers run on an inner perimeter of the flywheel ring and center the two damping rings and the tuned mass damper elements.
9 more elements
Dependencies are inferred from the claim text.