Braking-sail deorbiting device for micro/nano satellite

Abstract

The invention discloses a deorbiting device for a micro / nano satellite. The deorbiting device for the micro / nano satellite comprises a sail storing device, a sail unfolding device and an unlocking device, wherein the sail unfolding device is of a centrosymmetric structure, and comprises an upper end cover, a lower end cover, a clack-shaped central shaft, two ring flanges, two strip elastic masts, four supporting prisms, four pairs of pilot sleeves, four hold-down mechanisms and four leaf springs. After a ground command is received, the unlocking device releases the clack-shaped central shaft of the sail unfolding device; the strip elastic masts wound on the clack-shaped central shaft drive a thin-film sail, which is stored in a sail storing chamber, to unfold through releasing elastic potential energy stored by the strip elastic masts. According to the deorbiting device for the micro / nano satellite, the normal sectional area, in which a satellite moves, is increased by utilizing the unfolding of the thin-film sail, the effect of atmospheric drag perturbation on the micro / nano satellite is enhanced, and thus, the passive deorbiting of the micro / nano satellite is prompted.

Description

technical field [0001] The invention belongs to the field of spacecraft de-orbiting, and in particular relates to a micro-nano satellite braking sail de-orbiting device. Background technique [0002] Since the first artificial earth satellite was launched by human beings, space technology has made great achievements and developed rapidly, but at the same time, it has also caused a large number of space debris to remain in the near-Earth space for a long time, and these increasing numbers of space debris have affected Human normal space activities. So far, humans have carried out more than 5,000 spacecraft launches, and more than 200 on-orbit spacecraft or rocket carrier explosion / impact events have occurred, and a large amount of space debris has also been generated. The most obvious example is the space collision between the abandoned Soviet satellite Kosmos-2251 and the American satellite Iridium-33 in 2009. [0003] The existence of space debris seriously threatens the ...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a micro-nano satellite braking sail de-orbit device, which can de-orbit a micro-nano satellite with an orbital height of 800km and a mass of 70kg within 25 years, and solve the problem that the micro-nano satellite cannot complete the task within the specified time. Internal de-orbiting becomes a problem of space debris affecting the normal operation of other satellites

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