Separated reaction flywheel body

Abstract

The invention discloses a separated reaction flywheel body. The separated reaction flywheel body comprises a wheel rim, a wheel spoke, adjusting gaskets and a wheel hub, wherein the wheel rim is in coaxial clearance fit with the wheel spoke and connected with the wheel spoke through bolts; the wheel spoke and the wheel hub form an integrated structure through a welding process; the adjusting gaskets are nonmetal epoxy glass cloth plates, are clamped between the wheel spoke and the wheel rim and are used for adjusting damping coefficient of the whole wheel body and suppressing resonance amplification of the wheel body during working under a vibration environment. The wheel rim adopts an annular cylinder structure, and screw holes are formed in the internal side of the cylinder and the wheel rim can be coaxially connected with the wheel spoke through screws. The wheel rim is the far end of the wheel body in a radial direction and is made of a high-density stainless steel material so that the rotation inertia can be increased as much as possible. Central shallow holes are formed in the centers of two end surfaces of the wheel rim and used for reducing weight to realize dynamic balance. The separated reaction flywheel body disclosed by the invention is advantaged in that the machining process of the separated reaction flywheel body is simple, the structural strength / mass ratio and structural stiffness / mass ratio of the separated reaction flywheel body are high and the mass of the separated reaction flywheel body is obviously reduced; therefore, the axial load of the reaction flywheel is reduced and the reliability of the reaction flywheel is improved.

Description

technical field [0001] The invention relates to the field of spacecraft control, in particular to a split-type reaction flywheel body, which is suitable for satellite attitude control systems. Background technique [0002] The reaction flywheel is an important executive mechanism for satellite attitude control. It controls the corresponding speed and current according to the requirements of the attitude control computer, thereby generating momentum moment and reaction moment, realizing high-precision exchange of angular momentum with the spacecraft, and correcting the attitude deviation of the spacecraft. purpose, or to complete some predetermined attitude adjustment of the spacecraft. The realization of the moment of momentum relies on the wheel body, which is the main contributor to the moment of inertia of the reaction flywheel. [0003] When the rotational speed is selected, the design of the angular momentum is transformed into the design of the moment of inertia of ...

AI Technical Summary

Problems solved by technology

The radial dimensions of the spokes and the hub are small, providing a small moment of inertia, but due to the use of high-density materials, the distributed mass is relatively large, so a better moment of inertia / mass ratio is not obtained, resulting in an increase in the overall structural quality of the flywheel

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