An aerodynamically assisted method for capturing periodic orbits of equilibrium points

Abstract

The invention discloses a method for capturing a periodical orbit of a balance point based on aerodynamic assistance, relates to a method for capturing a periodical orbit of a sun-planet-probe three-body system, and belongs to the technical field of aerospace. The invention establishes the motion equation of the probe under aerodynamic force, and determines the change law of the control amount of the probe moving in the atmosphere, and uses a section of orbit of the probe entering the planetary atmosphere to compare the interstellar transfer orbit with the stable manifold of the balance point periodic orbit. Connection to realize the periodic orbit capture of the planet-sun-probe three-body system. The probe first enters the planetary atmosphere, uses aerodynamic force to assist deceleration, and enters the stable manifold under the planet-sun-probe three-body system when leaving the atmosphere, and glides along the stable manifold to a periodic orbit without power to achieve capture. The invention has the characteristics of extremely small required speed increment, many capture opportunities and high flexibility, and is suitable for capturing periodic orbits of planetary balance points with atmospheres.

Description

An aerodynamically assisted method for capturing periodic orbits of equilibrium points technical field The invention relates to a method for capturing periodic orbits, in particular to a method for capturing periodic orbits under the sun-planet-probe three-body system, which is suitable for the process of a probe entering a periodical orbit of a balance point from an interstellar transfer orbit, and belongs to aerospace technology field. Background technique The equilibrium point is a point with special properties in the sun-planet-probe three-body system, and the objects at the equilibrium point remain relatively stationary relative to the sun and the planets. There is a periodic orbit around the equilibrium point that satisfies certain speed and position constraints near the equilibrium point. Objects on the periodic orbit also maintain a basically constant positional relationship with respect to the sun and planets, and have a relatively stable thermodynamic and electro...

AI Technical Summary

Problems solved by technology

This method can capture the detector to a circumcircle using a lower velocity increment, but cannot capture the detector to a periodic orbit near the equilibrium point

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