Gravity-assisted celestial body selection method for celestial body detection based on contour map

Abstract

The invention relates to a gravity-assisted celestial body selection method for celestial body detection based on a contour map, and particularly relates to a gravity-assisted celestial body selection method for interstellar energy-saving flight, belonging to the field of aerospace technologies. The method comprises the following steps of: firstly, proposing a performance index of an intersected target celestial body according to task demand and giving out possible potential gravity-assisted celestial bodies by combining with the orbit feature of the target celestial body; secondly, obtaining the states of the target celestial body and the potential gravity-assisted celestial bodies through ephemerides of the target celestial body and potential gravity-assisted celestial bodies, and solving the Lambert problem from the gravity-assisted celestial bodies to the target celestial body to obtain the contour map of related performance indexes; thirdly, judging whether the celestial body can be used as the gravity-assisted celestial body flying to the target celestial body or not according to the contour map and a task constraint; and finally, combining an energy condition with the ephemerides of planets so that the problem of the selection of gravity-assisted celestial bodies in a deep space detection energy-saving flight task is effectively solved.

Description

technical field [0001] The invention relates to a celestial body selection method for celestial body detection based on a contour map, in particular to a celestial body selection method for interstellar energy-saving flight, and belongs to the field of aerospace technology. Background technique [0002] The propulsion flight technology is the key technology to realize low-energy interstellar exploration, and the choice of propulsion celestial bodies directly affects the effect of propulsion flight trajectory design. In terms of the developed interstellar flight with the help of celestial body selection technology, prior technology (see Nathan J. Strange, James M. Longuski, Graphical Method for Gravity-Assist Trajectory Design, Journal of Spacecraft and Rockets, 39(1): 9- 16) Raised P-r p Diagram. Based on the Tisserand criterion, this method gives the P-r that can describe the orbital energy of the probe after powered flight p Figure, according to different celestial bodi...

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Problems solved by technology

[0003] In order to solve the problem that the celestial body selection method does not match the planetary ephemeris, the present invention proposes a celestial body detection method based on contour maps

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