Mars complex terrain region safe landing trajectory generation method with minimum fuel consumption

Abstract

The invention relates to a Mars complex terrain region safe landing trajectory generation method with minimum fuel consumption, and belongs to the technical field of planet landing. The method comprises the steps that a Mars powered lowering kinetic model is built at first, a navigation function is built according to the target landing terrain, obstacle avoidance control force obtained through the navigation function can effectively avoid collision between a lander and an obstacle, and the lander is safely landed to a target landing point. According to the Mars complex terrain region safe landing trajectory generation method with minimum fuel consumption, the obtained obstacle avoidance control force is introduced into a Mars powered lowering kinetic equation, the control force is partially used for achieving obstacle avoidance, and landing trajectory optimization is carried out on the improved kinetic equation, so that obstacle avoidance is achieved, and meanwhile fuel consumed by the powered lowering trajectory is saved. The Mars complex terrain region safe landing trajectory generation method can not only take the target landing area terrain into consideration, but also effectively reduce fuel consumption, and overcomes the defects that obstacle avoidance cannot be achieved and fuel consumption is large in traditional optimization trajectory and obstacle avoidance.

Description

technical field [0001] The invention relates to a method for generating safe landing trajectories in complex terrain areas of Mars with the least fuel, and belongs to the technical field of planetary landings. Background technique [0002] With the continuous development of human society and economy and the continuous advancement of science and technology, Mars exploration has become one of the hotspots of deep space exploration. Among them, the Mars landing exploration mission is the most scientifically meaningful and challenging. Since complex terrain areas on Mars have higher scientific exploration value, in order to achieve breakthrough scientific results, future landers need to have the ability to land in complex terrain areas. In order to reduce the fuel consumption during the powered descent and reduce the mission cost, it is very necessary to study the fuel-optimized landing trajectory. [0003] At present, during the powered descent of Mars, researches have been ca...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of safe landing in complex terrain areas on Mars, and propose a method for generating safe landing trajectories in complex terrain areas on Mars with the most fuel savings, which can be applied to landing in complex terrain areas on Mars, and can save power while avoiding obstacles. fuel consumption

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