GB/T 44776-2024General requirements of simulation analysis for space environments and their effects on spacecraft (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part

1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the Chinese Academy of Sciences. This document is under the jurisdiction of the National Technical Committee for Standardization of Aerospace Technology and Its Applications (SAC/TC425). This document was drafted by: Beijing Satellite Environmental Engineering Research Institute, Shenzhen Star Earth Twin Technology Co., Ltd., Harbin Institute of Technology, China Academy of Sciences National Space Science Center, Beijing Spacecraft General Design Department, Xiangtan University, Nanjing University of Aeronautics and Astronautics, China Space Technology Research Institute Institute of Physics and Chemistry, Chinese Academy of Sciences, Xinjiang Institute of Physics and Chemistry, Xi'an Jiaotong University, Beijing Weidong Space-Time Technology Co., Ltd., Zhongke Xingtu Measurement and Control Technology Co., Ltd. Co., Ltd., Xi'an Longfei Electric Technology Co., Ltd., Space Application Engineering and Technology Center of the Chinese Academy of Sciences, Digital Space (Beijing) Technology Joint-stock company, Harbin Institute of Technology Satellite Technology Co., Ltd. The main drafters of this document are. Shen Zicai, Ji Qizheng, Ouyang Xiaoping, Li Xingji, Cai Minghui, Wang Shijin, Tang Xiaobin, Xiang Yanchao, Qu Shaojie, Qiu Zhenyu, Hu Yanqi, Mei Bo, Li Yudong, Fang Meihua, Chen Yu, Cao Yan, Chen Jingang, Chen Yupeng, Luo Dan, Zhang Xin, Li Changhong, Wang Xinyue, Yang Jianqun, Jiao Zilong, Mao Xin, Guo Qi, Tang Xiaojun, Zhang Yuanyuan, Liu Yenan, Ding Yigang, Ma Xin, Dai Wei, Wang Hanfeng, Ren Siyuan, Chen Jian, Sun Wei, and Liu Wei. Spacecraft space environment and its effects General requirements for simulation analysis

1 Scope

GB/T 44776-2024 sets the general requirements for simulating the space environment and its effects on spacecraft. Every design decision on a satellite, the shielding thickness, the part selection, the surface materials, the orbit-average power, rests on a prediction of an environment nobody can measure in advance, and those predictions are made with models whose choice and use vary between organisations enough to change the answer materially. The standard imposes a common process. It sets the general process of the simulation analysis, then the treatment of each environment in turn, the neutral atmosphere and atomic oxygen, the plasma and surface and internal charging, the trapped radiation belts, solar particle events and cosmic rays with the total dose, displacement damage and single event effects that follow, the micrometeoroid and debris flux, the thermal and vacuum environment and the ultraviolet and contamination effects, giving for each the models to be used, the input parameters, the analysis method, the outputs and the verification and documentation of the analysis. It took effect on 26 October 2024.

This document specifies the general requirements for spacecraft space environment and its effects simulation analysis, including the space environment and its effects simulation analysis General process, mission analysis, space environment and its effect factor analysis, space environment and its effect parameter analysis, solar activity analysis, planetary magnetism Field impact analysis, orbit analysis and modeling, spacecraft structure analysis and modeling, space environment simulation analysis, space environment and its effects simulation analysis analysis, simulation analysis result output and other requirements. This document applies to spacecraft and its materials, components, assemblies, etc. in vacuum, charged particles, ultraviolet radiation, neutral atmosphere (including atomic oxygen), Plasma, pollution, micrometeoroids and space debris, dust and dust storms and other environments and their single particle effects, total ionization dose effects, displacement damage effects Effects of surface charge and discharge, deep charge/internal charge, atomic oxygen erosion, micrometeoroid and space debris impact, and contamination It is also applicable to the design and development of simulation analysis software and codes for spacecraft space environment and its effects, as well as the space environment of organisms. It is used as a reference for analysis of the space environment and its effects.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document.

GB/T 29079 Spacecraft orbit classification and common parameter symbols

GB/T 30114.2 Terminology of Space Science and Its Applications Part

3 Terms and Definitions

The terms and definitions defined in GB/T 29079, GB/T 30114.2 and GB/T 32452 and the following terms and definitions apply to this document.