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Method of designing injection target point of Mars probe with optimal fuel

A technology of Mars probe and design method, which is applied in the direction of instruments, calculations, special data processing applications, etc., and can solve problems such as consumption

Inactive Publication Date: 2014-12-31
SHANGHAI XINYUE METER FACTORY
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Problems solved by technology

Midway corrections consume precious fuel, so the industry needs a fuel-optimized method for selecting the target point of the Mars rover into orbit

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  • Method of designing injection target point of Mars probe with optimal fuel
  • Method of designing injection target point of Mars probe with optimal fuel
  • Method of designing injection target point of Mars probe with optimal fuel

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Embodiment Construction

[0017] Read the detailed description of non-limiting embodiments with reference to the following figures.

[0018] The present invention provides a method for designing the target point of the Mars probe with optimal fuel, the process of which is as follows figure 1 shown. The constraint parameter is the probability of the probe or the upper stage of the rocket hitting Mars, and the optimization parameter is the speed increment that needs to be corrected halfway to correct the probe to the final target point.

[0019] 1) Build the Mars B plane:

[0020] 1-1) Definition of B plane

[0021] Before the probe reaches the vicinity of Mars and does not brake, its flight trajectory relative to Mars is a hyperbola. The so-called B plane refers to the plane passing through the center of Mars and perpendicular to the incident asymptote of the hyperbolic orbit of the probe, such as figure 2 shown.

[0022] Suppose the vector of the incident asymptote of the hyperbolic orbit is , ...

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Abstract

The invention provides a method of designing an injection target point of a Mars probe with optimal fuel. The method comprises the following steps of firstly, establishing a Mars B plane and transforming a target track constraint to a target point of the B plane; secondly, getting a speed increment which is corrected in the midway by utilizing a differential correcting algorithm, figuring up an equal probability impact ellipse on the B plane according to an injection error, and selecting the injection target point on the ellipse. An injection deviation, which is artificially provided, is eliminated through correcting a cruising section in the midway, so that a selection standard is that the fuel consumed for correcting the injection target point to a final target point is minimized. A plurality of points are selected on the impact probability ellipse, the speed increment required for correcting each point is figured up, then continuous sampling and calculation are carried out near the point with the smallest speed increment, and lastly, the optimal injection target point of the fuel can be approached continuously. According to the method, the probability constraint of the upper-stage impact of the probe or a rocket on the Mars can be met, and meanwhile, the fuel consumption corrected in the midway is optimized.

Description

[0001] technical field [0002] The invention relates to the orbit design technology of deep space probes, in particular to a method for designing a target point for the orbiting of Mars probes with optimal fuel. Background technique [0003] In 1966, the United Nations promulgated the "Treaty on Principles Concerning the Activities of States in the Exploration and Use of Outer Space, Including the Moon and Other Celestial Bodies" (referred to as the "Outer Space Treaty"), which formed the basic framework of international space law. The activities of celestial bodies are all bound by it, and our country joined the treaty in 1983. The treaty requires that celestial bodies, including the Earth, should be protected from contamination by harmful substances from other celestial bodies. Since Mars is one of the celestial bodies in the solar system most likely to have signs of life, special precautions must be taken during Mars exploration missions to introduce bacteria from Earth...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 周杰张玉花朱春艳刘宇谭天乐贺亮
Owner SHANGHAI XINYUE METER FACTORY
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