Satellite-loaded packaged prestressed thin-walled tapered gravity gradient bar

Abstract

The invention provides a satellite-loaded packaged prestressed thin-walled tapered gravity gradient bar. The satellite-loaded packaged prestressed thin-walled tapered gravity gradient bar is characterized by being applied to the field of spacecrafts and comprising a satellite, a thin-walled bar, a load, and a small end frame. The small end frame comprises a baffle I, a baffle II and a rotary shaft. The whole thin-walled bar is tapered, the large-diameter end of the thin-walled bar is a big end, and the other small-diameter end of the thin-walled bar is a small end. The load is mounted on the small end frame. The big end of the thin-walled bar is fixed to the side face of the satellite through a flange, and the small end of the thin-walled bar penetrates through a speed-limiting narrow outlet and is fixed to the load. The satellite-loaded packaged prestressed thin-walled tapered gravity gradient bar has the undoubted beneficial effects that the structure is simple, and excessive kinematic pairs are avoided; and by fixing the big end of the thin-walled bar to the satellite, the gravity gradient bar can be kept relatively stable and effectively resist the resistance from outside. The gravity gradient bar can complete self-unfolding without additionally arranging a driving device after arriving at the outer space. The thin-walled bar can be flat, and accordingly a high extension ratio is achieved.

Description

technical field [0001] The invention relates to the technical field of space extension mechanisms, in particular to a satellite load-wrapped prestressed thin-walled conical gravity gradient rod. Background technique [0002] When a space satellite orbits the earth, the center of the earth exerts different gravitational forces on each part of the satellite. The resultant force of gravitational force and centrifugal force is called gravity. Satellites can be simply divided into mass m1 that is closer to the center of the earth and mass m2 that is farther from the center of the earth. Because m1 is closer to the center of the earth, the gravitational force it receives is greater than the centrifugal force, and the gravity points to the center of the earth, and m2 is farther away from the center of the earth. Far away, so the gravitational force is smaller than the centrifugal force, and the gravitational force faces away from the center of the earth. The satellite midpoint O h...

AI Technical Summary

Problems solved by technology

Solve the problem that the storage space of the payload is limited and the gravity gradient rod is not easy to store

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