Gravitation-assist simulation method considering influence sphere of target celestial body

Abstract

The invention discloses a gravitation-assist simulation method considering an influence sphere of a target celestial body. Aiming at the disadvantages that when the ratio of the size of the influence sphere of a gravitation-assist target celestial body to the flying distance of a prober is relatively larger, larger analysis error can be brought if the motion of the prober in the influence sphere of the gravitation-assist target celestial body is ignored, the method simplifies the influence sphere of the gravitation-assist target celestial body into a sphere, and simplifies the motion of the prober in the influence sphere to two body motion along a hyperbolic orbit to analyze. The hyperbolic orbit and the prober orbit after the flight of the influence sphere flies are treated by adopting aconic curve splicing method to complete the stimulation analysis work before and after gravitation-assist flight, thus ensuring the stimulation analysis to be closer to the real motion situation of the prober in space.

Description

technical field [0001] The invention relates to a simulation method for a space probe to fly by force, in particular to a method for simulating the flight by force of a celestial body when the ratio of the size of the ball to the flight distance of the gravitational force of the target celestial body is large, and the influence on the flight track in the sphere cannot be ignored. Background technique [0002] With the gradual deepening of human understanding of space exploration activities, the technology of celestial body leverage flight has received more and more attention. There are three main meanings of celestial body flying technology in space exploration activities: first, it can save the fuel carried by the probe; second, it can shorten the time of interstellar travel; third, it can make the probe enter a very special orbit for rare detection activities . [0003] In the foreign literature "Trajectory Analysis for the Lunar FlybyRescue of AsiaSat-3 / HGS-1" by C.Ocamp...

AI Technical Summary

Problems solved by technology

However, for the probes flying in the Earth-Moon system, which consists of two close-distance and similar masses, if they want to fly with the help of the gravitational force of the small-mass celestial body——the moon, considering the target The ratio of the radius of the celestial body's gravitational influence sphere (for example, the radius of the moon's influence sphere is 66200km) to the maximum straight-line distance of the probe (for example, the average distance between the earth and the moon is 384400km), the probe's flight time in the influence sphere of the target celestial body Longer, it has a greater impact on the orbit of the probe. At this time, ignoring the influence of the influence of the target celestial body on the sphere will bring a greater error

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