Passive off-orbit cube satellite

Abstract

The invention discloses a passive off-orbit cubic satellite, belongs to the technical field of near-earth orbit separation. The passive off-orbit cubic satellite solves the off-orbit problem of a near-earth orbit, and comprises an inflatable resistance-increasing ball; a polyimide film material with the thickness of less than or equal to 5 microns is adopted as a ball skin of the inflatable resistance-increasing ball; the inflatable resistance-increasing ball which is is deflated and folded is sealed in a cubic box, one end surface of the cube box is provided with a hinged box cover, and the hinged box cover is locked through a initiating explosive bolt. The passive off-orbit cubic satellite is applied to near-earth orbit separation.

Description

technical field [0001] The invention belongs to the technical field of low-earth orbit de-orbiting, and in particular relates to a passive de-orbiting cube satellite. Background technique [0002] According to international space data, there are currently 5,000 satellites in Earth orbit. In 2017, there were 394 new satellites in orbit around the world, a 60% increase from 2016. The risk of star collision is becoming more and more serious. In 2009, the US "Iridium 33" The collision with the Russian "Cosmos 2251" satellite produced more than 3,200 pieces of debris; most of the abandoned satellites and space debris are distributed in the most frequently used low-earth orbit, which is 2,000km above the ground, that is, LEO. The U.S. Space Surveillance Network announced that as of February 2018, the number of space debris larger than 10cm is about 18,835, and space debris is still increasing at a rate of 5% per year. It is imminent to solve the deorbiting task of space debris. ...

AI Technical Summary

Problems solved by technology

The disadvantage is that the tether is easily cut off by space debris, which also increases the risk of collision with other spacecraft, and has limited effect on some polar orbit satellites;

[0007] (3) Braking sail de-orbiting technology, on the satellite, the sail is formed by supporting the mast to stretch the film, increasing the cross-sectional area of ​​the satellite in the direction of velocity, thereby increasing the atmospheric resistance and forcing the satellite to de-orbit. This de-orbiting method requires accurate attitude control , the off-track efficiency is unstable;

[0008] (4) Expanding foam resistance increasing technology, electrostatic force increasing resistance technology, and dust increasing resistance technology are mainly aimed at small fragments. By spraying foam, plasma or dust to the fragments, the area-to-mass ratio of the fragments is increased, and the atmospheric resistance of the fragments is increased. But the technology is not yet mature, and the remaining particulate cloud may affect the normal operation of the spacecraft

Images