Method for designing bias orbit of spacecraft in halo orbit in sun-earth three-body gravitational field

Abstract

The invention discloses a method for designing a bias orbit of a spacecraft in a halo orbit in a sun-earth three-body gravitational field. The invention proposes a semi-analytic-solution-based orbit design method for a task demand of thrusting the spacecraft in the halo orbit to a heliocentric grave orbit by adopting a small thrust force in the sun-earth three-body gravitational field. According to the method, the calculation amount can be greatly reduced while the orbit precision is ensured. In addition, the invention proposes a method for realizing orbit maneuvering by adopting a minute continuous thrust system which mixes a variable reflectivity solar sail with electric propulsion. The method for realizing the orbit maneuvering by a mixed thrust force is capable of greatly reducing fuel consumption. The purpose of orbit maneuvering with minimum fuel consumption is achieved through optimization design of a posture angle of the solar sail. Compared with a conventional pulse bias orbit design method, the method proposed by the invention has the advantages that the calculation time can be shortened to a great extent on the premise of ensuring the solving precision.

Description

technical field [0001] The invention relates to the field of aerospace, in particular to a design method for a halo-orbit spacecraft offset orbit in the sun-earth three-body gravitational field. Background technique [0002] With the development of aerospace technology, deep space exploration has become a key project of my country's 13th Five-Year Plan in the field of aerospace. Halo orbit is an important mission orbit in deep space exploration. Since the halo orbit is a naturally stable periodic orbit in the gravitational field of the sun-earth three-body, it is similar to the geostationary orbit in the gravitational field of the earth, and has high scientific and engineering application value. For example: Arranging spacecraft in halo orbit can be used for space exploration or relay communication. However, halo orbit resources are limited. When the mission of a spacecraft in halo orbit ends, it needs to be pushed out of the mission orbit and pushed to the graveyard orbit...

AI Technical Summary

Problems solved by technology

However, halo orbit resources are limited. When the mission of a spacecraft in halo orbit ends, it needs to be pushed out of the mission orbit and pushed to the graveyard orbit of the heliocentric gravitational field, otherwise the spacecraft will become orbital junk and affect the future orbital mission

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