Extra-large flexible capture device for capture and elimination of space debris

Abstract

The invention relates to an extra-large flexible capture device for capture and elimination of space debris. The extra-large flexible capture device comprises a fixed table, a flexible gripper and a driving mechanism. The fixed table is installed on a service aircraft and comprises a plate type structural part and a guide pipe. The guide pipe is of a hollow tubular structure, guides the flexible gripper and conducts auxiliary restraint on a captured target. The flexible gripper is of a bionic flexible body structure. One end of the flexible gripper is put into the hollow pipe of the guide pipeof the fixed table, and the rest part is exposed from the hollow pipe. Punching is conducted along the axis of a flexible body by a certain eccentric angle. When the driving mechanism pulls a rope from the bottom, eccentric force acts on the flexible body, bending deformation occurs, and unfolding release and folding of the flexible gripper are achieved. The driving mechanism can control one single flexible body to achieve unfolding release and folding and can also control the flexible gripper to achieve unfolding release and folding at the same time.

Description

technical field [0001] The invention belongs to the technical field of spacecraft on-orbit service, and relates to a super-large flexible capture device for capturing and removing space debris. Background technique [0002] With the increasing frequency of human space activities, the number of spacecraft launches continues to increase, resulting in a large number of space debris, including vehicles, failed payloads, and debris generated by collisions with space objects. In recent years, the number of in-orbit space debris that has been cataloged has reached 23,000. The problem of space debris has become an environmental problem that human beings must face. The main hazards of space debris are: it will pose a serious threat to the normal operation of the spacecraft in orbit, and collisions may occur, resulting in damage or even shattering of the spacecraft during normal operation, and at the same time, more space debris will be generated; space debris will occupy the geostati...

AI Technical Summary

Problems solved by technology

[0004] Although the traditional rigid capture technology is relatively mature in the docking mission of cooperative targets, for non-cooperative targets with certain attitude maneuverability or in a flipped state, the capture mechanism needs to be dynamically and precisely aligned with the predetermined capture position, which poses a threat to the aircraft's relative accuracy. Motion (relative position, speed, attitude, attitude angular velocity) control ability puts forward strict requirements

At the same time, for GEO orbits with a height greater than 30,000 kilometers, affected by factors such as measurement and control accuracy and teleoperation delay, traditional rigid docking will face great difficulties; in addition, the entire star spin of abandoned satellites and the periodic rotation of solar wings It also poses a greater threat to the safety of the captured aircraft itself.

[0005] Although flexible capture systems such as flying claws and flying nets have a long range and low requirements on the control ability of the aircraft body, they also have their shortcomings: the flying claw system is faced with problems such as strong dependence on the surface conditions of the target satellite; and the flying net The system is large in scale, vulnerable to structural damage and other problems, and is greatly affected by the shape of the target, making it difficult to effectively capture different space targets

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