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Method for designing ground equivalent experiment for space motion of spacecraft

A technology of space motion and experimental design, applied in instruments, calculations, special data processing applications, etc., can solve problems such as full-scale effective simulation of large-scale mechanisms that cannot move in a large range of space.

Inactive Publication Date: 2015-05-06
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0005] In order to solve the problem existing in the prior art that due to factors such as the size of experimental equipment, the ground cannot perform full-scale effective simulation of large-scale movement in space and the operation of large mechanisms, etc., the present invention provides a space movement ground etc. Effective experiment design method, the present invention provides a universal design method that can be applied to the ground equivalent experimental task of space movement

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  • Method for designing ground equivalent experiment for space motion of spacecraft
  • Method for designing ground equivalent experiment for space motion of spacecraft
  • Method for designing ground equivalent experiment for space motion of spacecraft

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Embodiment Construction

[0031] The ground equivalent experimental design for space motion includes the following steps:

[0032] Step 1: Parameterization of Space Mission

[0033] According to a given absolute orbital motion mission, on the basis of a clear orbit prototype, extract the spacecraft mass and size, orbital period, and orbital elements; for relative orbital motion, extract the spacecraft mass and size, after knowing the mission content, Key points (such as orbiting end point, rendezvous and docking start point, position holding point, etc.) location, flight time and other information;

[0034] Use dynamic formulas to calculate the required space prototype variables, including force F, gravitational coefficient μ, velocity v, acceleration a, angular velocity ω, angular acceleration α, impulse I, angular momentum h, moment of inertia J, moment M * Wait.

[0035] Step two, determination of equivalent scale factor

[0036] The establishment of the experimental model must first ensure that the model an...

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Abstract

The invention discloses a method for designing a ground equivalent experiment for space motion of a spacecraft. The method comprises the following steps of firstly, parameterizing the space motion; then, providing a space prototype and a ground experiment model by utilizing a dimension analysis method, and obtaining a mapping relationship of each motion parameter between the prototype and the model by utilizing a similarity theory; finally, mapping tasks in the space to a ground microgravity experiment environment according to completely similar requirements by utilizing the mapping relationship. According to the method disclosed by the invention, ground equivalent experiment design on the space motion can be carried out under a microgravity environment, the actual effect of the space motion can be reflected, and lots of problems possibly occurring in the space motion can be solved.

Description

Technical field [0001] The invention relates to a ground microgravity experiment method and technical field, in particular to a ground equivalent experiment design method for spacecraft movement in space. Background technique [0002] Spacecraft ground experiments are another emerging research hotspot in the aerospace field. Spacecraft ground experiments can intuitively show the completion process of space missions, so it has received more and more attention and attention from various countries. [0003] Literature Wang Qi, Chen Jinming. American neutral buoyancy simulator and its application[J]. Spacecraft Environmental Engineering, 2003(9): 53-59, and the literature Ma Aijun, Lu Laijie, Zhang Lei, etc. American neutral buoyancy Equipment and its application[J]. Manned Spaceflight, 2012(7): 19-25 The foreign microgravity systems and functions are analyzed. Johnson Space Center, Marshall Space Center, University of Maryland and other research institutions use their ground The exp...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 朱战霞毛正阳袁建平方群罗建军
Owner NORTHWESTERN POLYTECHNICAL UNIV
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