Patent ID: 11891157
Assignee: WAVETAMER LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  F  G  Y | IPC B  F  G  H

Claim 8:
9. A method of cooling bearings supporting a flywheel assembly in a controlled moment gyroscope configured for roll stabilization of a boat, said method comprising:
maintaining a below ambient pressure within a vacuum enclosure surrounding the flywheel assembly, the flywheel assembly including a flywheel shaft and having a moment of inertia of at least 11.7 kg·m2 (40,000 lbm·in2);
applying power to the flywheel assembly to accelerate the flywheel assembly at an acceleration rate of at least 2.5 rpm/s;
locking, during the accelerating, the flywheel assembly against precession;
after the locking, unlocking the flywheel assembly to allow precession of the flywheel assembly and dampening roll of the boat via the precession of the flywheel assembly; and
dissipating heat from the bearings supporting the flywheel assembly by transferring heat by conduction through the flywheel shaft to the exterior of the enclosure.