A Calculation Method for Transparency Shading of Spacecraft Components Containing Metal Mesh Cloth

Abstract

The invention discloses a method for calculating the translucent shielding of components containing metal mesh cloth in a spacecraft. The method adopts the smallest repeating unit to carry out three-dimensional modeling of the metal mesh cloth, and obtains the light transmittance of the metal mesh cloth under different illuminations and calculates the method. Save the data as a table; use the triangular surface to model the metal mesh member in 3D, first calculate the positional relationship between the triangular surface and the incident light, look up the table to get the light transmittance of the triangular surface, and calculate the projection area The light intensity is correspondingly reduced, and the area of ​​the light-transmitting occlusion pattern caused by the metal mesh member is calculated. The calculation method of the invention can solve the problems in the prior art that the calculation speed is slow, the calculation is inaccurate, and the shading of large components of complex spacecraft cannot be calculated.

Description

technical field [0001] The invention relates to the technical field of light-transmitting shielding of mesh cloth, in particular to a calculation method for light-transmitting shielding of components containing metal mesh cloth in a spacecraft. Background technique [0002] For most spacecraft, solar arrays are the only energy provider. A solar cell array is composed of multiple solar cells connected in series to form a battery string, and then multiple battery strings are connected in parallel. Since the output current of the battery string is limited by the cell with the smallest output, when a single solar cell is completely shaded, although a bypass diode is connected in parallel on each (or several) cells to avoid the reduction of the output current of the series module when shaded, However, it will still cause a drop in the output voltage of the component. In order to improve the cost-efficiency ratio, the maximum power point voltage of the solar cell array is usuall...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects or deficiencies in the prior art, the present invention provides a calculation method for the light-transmitting shading of components containing metal mesh in a spacecraft, which can solve the problem of slow calculation speed and inaccurate calculation in the prior art, and complex The problem that the occlusion of large spacecraft components cannot be calculated

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