Reaction wheels with magnetic-hydraulic bearings

To reduce the disturbing mechanical moments, generated by bearing side of rotating and increase the service life of reaction flywheel included in the system of orientation and stabilization system of the spacecraft, it is proposed to apply magnetohydraulic bearing instead of ball bearing assemblies for rotating flywheel. Magnetic fluid is the main element of magnetohydraulic bearing represented a colloidal solution of single-domain magnetic particles coated with thin layer of protective cover by surfaces actives substances that stave off conglutination of the particles in a liquid base, it has high flowability and saturation of magnetization. If the nonmagnetic object is in the gap filled with a magnetic fluid between the two areas with a higher magnetic field, it is centered between them. As a result, reaction wheels were designed by magnetic-hydraulic bearing with emergency bearing and it increases stability of working rotor’s system by rotation, while it experiences not only axled forces of displacement but also radial forces by outer mechanical disturbance on the frame. For the decrease of the mechanical disturbs moments from the bearing rotation and increase work’s resource of reaction flywheels entering in the system of orientation and stabilization of space apparatus, it is offered to apply magnetic-hydraulic bearings instead of ball-bearing unit to flywheel rotation.