Locking and unlocking device for satellite docking

Abstract

The invention relates to a locking and unlocking device for satellite docking. The device comprises four auxiliary electromagnets (1), a passive system (2) and an active system (3), wherein the two auxiliary electromagnets and the active system (3) are fixed on the active satellite, the other two auxiliary electromagnets and the passive system (2) are fixed on the passive satellite, the auxiliaryelectromagnets (1) on the active satellite are in one-to-one correspondence with the auxiliary electromagnets of the passive satellite, and the axes of the passive system (2) and the active system (3)coincide; the passive system comprises a locking and unlocking electromagnet (5), a passive system main electromagnet (9), a sliding rail (10), a sliding block (11), a passive system shell (12), a docking sleeve and a passive docking piece (17). The driving system comprises a driving docking piece (18), a fine alignment gear sleeve, a driving system main electromagnet (21) and a driving system shell (22). The docking reliability and the docking precision are improved, and flexible docking and rigid locking are achieved.

Description

technical field [0001] The invention belongs to the technical field of space satellite docking, and in particular relates to a locking and unlocking device for satellite docking. Background technique [0002] Spacecraft docking technology is a prerequisite for on-orbit services such as on-orbit assembly, replenishment, maintenance, and upgrades of modular spacecraft. At the same time, space docking technology is an important means of developing space countermeasure equipment, and it is the core technology that all space powers are competing to develop. Traditional on-orbit docking usually adopts a mechanical docking mechanism, mainly using thrusters to provide docking force. This method is prone to collisions, consumes thruster fuel, reduces service life, and easily produces thruster plume optical pollution and heat emissions. and vibration excitation. The mechanical docking mechanism is not suitable for small spacecraft in terms of docking distance and tolerance; when app...

AI Technical Summary

Problems solved by technology

Traditional on-orbit docking usually adopts a mechanical docking mechanism, mainly using thrusters to provide docking force. This method is prone to collisions, consumes thruster fuel, reduces service life, and easily produces thruster plume optical pollution and heat emissions. and vibration excitation

The mechanical docking mechanism is not suitable for small spacecraft in terms of docking distance and tolerance; when applied to a spacecraft loaded with optical imaging payloads, the optical pollution of the thruster plume is particularly prominent, which will cause blurred vision of optical instruments

At the same time, in the final stage of thruster docking, the thruster is closed to implement uncontrolled inertial docking, which lacks the ability to deal with emergencies

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