Device applied to space satellite system tether releasing, retracting and tension control

Abstract

The invention provides a device applied to space satellite system tether releasing, retracting and tension control. The device mainly comprises a separation and release module, a tether storage moduleand a tether release and tension control module, wherein the separation and release module is used for drawing tethers during release; the tether storage module is used for reasonably storing the tethers; the tether release and tension control module is used for performing coordination control on the system. Compared with an existing device, the device has the advantages that the tether storage module using a storage conical cylinder coordinated with a loosening-preventing cylinder is designed, so that resistance borne by the tethers during release is reduced while tether intertwining risks are reduced; a tether discharge mechanism formed by a screw and a slider are designed, so that the formation of impact load on a reel during tether retracting is avoided, and more tethers can be accommodated on the reel; by using a shearing mechanism controlled by a motor, the tethers can be cut off when the system is in emergency situations, and impact influence of the tethers on a spacecraft is avoided.

Description

technical field [0001] The invention relates to the technical field of space tethered satellites, in particular to a device applied to tether deployment, recovery and tension control of a space satellite system. Background technique [0002] As a new type of spacecraft, tethered satellites have broad application prospects, specifically in the following aspects: (1) Cleaning up space debris through tethered satellites reduces the operational risk of in-orbit spacecraft. (2) Drag and change the orbit of the spacecraft through the tethered satellite, such as dragging the spacecraft that is about to be abandoned in the geostationary orbit into the grave orbit. (3) Detect the space environment through tethered satellites. [0003] Many research institutions at home and abroad have conducted research on tether release and recovery devices. In foreign research, NASA in the United States and ISA in Italy conducted the first relatively complete on-orbit test of electric power tethe...

AI Technical Summary

Problems solved by technology

[0004] Combining the above requirements, the investigation found that the existing devices at home and abroad still have some deficiencies, for example, all devices are not equipped with a tether shear mechanism; the Japanese T-Rex project cannot control and measure the tension of the tether, and the tether is unfolded It cannot be recovered afterwards; it can be seen from the ground test of the KITE project that there is a greater risk of entanglement during the deployment of the tether; the research of Zhejiang University is mainly aimed at the field of control, and there is no tether ejection mechanism designed, and the resistance encountered when the tether is deployed is relatively large , did not join the cable mechanism; the research of China Southern Airlines mainly focuses on the ejection mechanism, and the accuracy of tension measurement and control is poor

From a comprehensive point of view, the deficiencies of the existing technology are specifically manifested in the large friction force and high risk of entanglement during the tether release process; Greater overall risk of instability

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