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GJB 9100 consists of the following six parts under the general title Regulations for spacecrafts decommissioning:
a) Part 1: General rules;
b) Part 2: Deep space probe;
c) Part 3: Space station;
d) Part 4: Geostationary orbit spacecraft;
e) Part 5: Medium and high earth orbit spacecraft;
f) Part 6: Low earth orbit spacecraft.
This is Part 6 of GJB 9100.
This Part was proposed by the Equipment Department of Aerospace Systems Department of PLA Strategic Support Force.
Regulations for spacecrafts decommissioning
Part 6: Low earth orbit spacecraft
1 Scope
This part specifies the work principle, content and implementation procedure for decommissioning of low earth orbit spacecraft.
This part is applicable to the decommissioning of low earth orbit spacecraft.
2 References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part. For dated or version indicated reference, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references or references with version not indicated, the latest edition of the normative document referred to applies.
GJB 7893.21 TT&C management regulations for on-orbit satellites — Part 21: Deorbit management
GJB 9100.1 Regulations for spacecrafts decommissioning — Part 1: General rules
3 Decommissioning work principle
The work principles for spacecraft decommissioning generally consist of:
a) preventing the long-term interference of decommissioned spacecraft to the low earth orbit area;
b) reducing the possibility of disintegration of decommissioned spacecraft;
c) avoiding the collision between decommissioned spacecraft and other on-orbit spacecraft during the decommissioning.
4 Decommissioning application
The decommissioning shall be applied in accordance with the requirements of GJB 9100.1.
5 Decommissioning implementation
5.1 Decommissioning technical scheme development
5.1.1 Content of the decommissioning technical scheme
Decommissioning technical scheme generally includes:
a) status assessment of spacecraft before decommissioning;
b) spacecraft status setting;
c) technical requirements for decommissioning.
5.1.2 Status assessment of spacecraft before decommissioning
Before decommissioning, assessing the spacecraft regarding the status and performance so as to confirming the feasibility and testing existing risks of decommissioning, which the usually includes:
a) fuel assessment, to confirm whether satellites with orbit control meet the spacecraft orbit control requirements;
b) loading assessment, to confirm the on/off of load and other status;
c) other assessments, to confirm whether the subsystem and the impacts of space environment meet the requirements.
5.1.3 Spacecraft status setting
Spacecraft status settings generally include:
a) status setting for spacecraft payload;
b) status setting for spacecraft platform.
5.1.4 Technical requirements for decommissioning
Technical requirements for decommissioning generally include:
a) orbit control requirements for spacecraft with orbit control;
b) requirements for spacecraft passivation;
c) requirements for exceptional setting.
5.2 Decommissioning implementation scheme development
5.2.1 Content of the decommissioning implementation scheme
The decommissioning implementation scheme generally includes:
a) requirements for decommissioning implementation;
b) technical regulations for decommissioning implementation;
c) detailed rules for decommissioning implementation;
d) risk analysis and countermeasures for decommissioning implementation;
e) disposal plan for abnormal condition.
5.2.2 Requirements for decommissioning implementation
The requirements for decommissioning implementation generally include:
a) the timing of spacecraft decommissioning;
b) requirements for spacecraft tracking arc;
c) requirements for spacecraft status setting;
d) requirements for spacecraft orbit control;
e) requirements for spacecraft passivation;
f) responsibilities of interested parties.
5.2.3 Technical regulations for decommissioning implementation
According to GJB 7893.21 and decommissioning technical scheme, technical regulations for decommissioning implementation is developed, which generally include:
a) status setting regulations for spacecraft payload;
b) status setting regulations for spacecraft platform;
c) strategy making for spacecraft control under the orbit control conditions;
d) spacecraft passivation regulations.
5.2.4 Detailed rules in implementation
The details for decommissioning implementation generally include:
a) measurement and control implementation plan;
b) remote control operation requirements;
c) details of remote control operation;
d) details of spacecraft status monitoring.
5.2.5 Risk analysis and countermeasures in decommissioning implementation
The TT&C Center, together with the development department and spacecraft users, analyze the risks of spacecraft decommissioning and develop corresponding countermeasures, which generally includes:
a) the risk regarding whether the satellite platform is able to support a decommissioning task;
b) the risk of collision in orbit control;
c) analysis of falling.
5.2.6 Disposal plan for abnormal condition
For all kinds of abnormal condition that may occur during decommissioning, corresponding disposal plans shall be developed.
5.3 Decommissioning implementation procedure
5.3.1 Preparation for decommissioning implementation
The preparation work for decommissioning usually includes:
a) the TT&C center, spacecraft users and the development department review the remote control instructions, inserted data and control parameters required for decommissioning;
b) the TT&C center and spacecraft users integrate the TT&C resources needed for decommissioning;
c) other matters.
5.3.2 Implementation process of decommissioning
The implementation process of decommissioning usually consists of:
a) the spacecraft user, together with the development department and the TT&C center, set the status regarding spacecraft payload before decommissioning;
b) the TT&C Center, together with the development department, set the status regarding spacecraft platform before decommissioning;
c) the TT&C Center organizes and implements the orbit control of decommissioned spacecraft;
d) the TT&C Center and the development department implement the spacecraft passivation;
e) the corresponding disposal plan shall be applied in case of abnormal conditions.
6 Decommissioning implementation effect evaluation
The evaluation items of decommissioning implementation effect generally include:
a) spacecraft users and development departments confirm the status regarding spacecraft payload;
b) the TT&C Center and the development department confirm the status regarding to the spacecraft platform;
c) the TT&C center carries out the conformity assessment for spacecraft orbit;
d) the development department and the TT&C center confirm the spacecraft passivation.
GJB
中华人民共和国国家军用标准
FL 1640 GJB 9100.6-2017
航天器退役规程
第6部分：近地轨道航天器
Regulations for spacecrafts decommissioning-
Part 6：Low earth orbit spacecraft
2017-09-12发布 2017-12-01实施
中央军委装备发展部 颁布
前言
GJB 9100《航天器退役规程》分为6个部分：
a) 第1部分：总则；
b) 第2部分：深空探测器；
c) 第3部分：空间站；
d) 第4部分：地球静止轨道航天器；
e) 第5部分：中高轨道航天器；
f) 第6部分：近地轨道航天器。
本部分是GJB 9100的第6部分。
木部分由战略支援部队航天系统部装备部提出。
航天器退役规程
第6部分：近地轨道航天器
1 范围
本部分规定了近地轨道航天器退役的工作准则、内容和实施流程。
本部分适用于近地轨道航天器的退役工作。
2 引用文件
下列文件中的有关条款通过引用而成为本部分的条款。凡注日期或版次的引用文件，其后的任何修改单(不包含勘误的内容)或修订版本都不适用于本部分，但提倡使用本部分的各方探讨使用其最新版本的可能性。凡不注日期或版次的引用文件，其最新版本适用于本部分。
GJB 7893.21 卫星在轨测控管理规程 第21部分：离轨管理
GJB 9100.1 航天器退役规程 第1部分：总则
3 退役工作准则
航天器退役工作准则一般包括：
a) 防止退役航天器对近地轨道区域长期干扰；
b) 降低退役航天器分裂解体的可能性；
c) 避免退役航天器在退役过程中与其他在轨航天器的碰撞。
4 退役申请
按照GJB 9100.1的要求中请退役。
5 退役实施
5.1 退役技术方案制定
5.1.1 退役技术方案内容
退役技术方案内容一般包括：
a) 航天器退役实施前状态评估；
b) 航天器状态设置；
c) 退役技术要求。
5.1.2 航天器退役实施前状态评估
航天器退役实施前对航天器状态和性能进行评估，确认退役实施的可行性和存在的风险，内容一般包括：
a) 燃料评估，确认具有轨控能力的卫星符合航天器轨控要求；
b) 载荷评估，确认载荷开关机及其他状态；
c) 其他评估，确认各分系统及空间环境影响符合要求。
5.1.3 航天器状态设置
航天器状态设置一般包括：
a) 航天器有效载荷状态设置；
b) 航天器平台状态设置。
5.1.4 退役技术要求
退役技术要求一般包括：
a) 具有轨控能力的航天器轨控要求；
b) 航天器钝化要求；
c) 异常处置要求。
5.2 退役实施方案制定
5.2.1 退役实施方案内容
退役实施方案内容一般包括：
a) 退役实施要求；
b) 退役实施技术规定；
c) 退役实施细则；
d) 退役实施风险分析及对策；
e) 退役异常处置预案。
5.2.2 退役实施要求
退役实施要求一般包括：
a) 航灭器退役实施时机；
b) 航天器跟踪弧段要求；
c) 航天器状态设置要求；
d) 航天器轨道控制要求；
e) 航天器钝化要求；
f) 相关方职责。
5.2.3 退役实施技术规定
根据GJB 7893.21以及退役技术方案制定退役实施技术规定，内容一般包括：
a) 航天器有效载荷状态设置规定；
b) 航天器平台状态设置规定；
c) 具备轨道控制条件的航天器控制策略制定；
d) 航天器钝化规定。
5.2.4 退役实施细则
退役实施细则内容一般包括：
a) 测控实施计划；
b) 遥控操作要求；
c) 遥控操作内容；
d) 航天器状态监视内容。
5.2.5 退役实施风险分析及对策
测控中心会同研制部门、航天器用户分析航天器退役实施风险并制定相应对策，一般包括：
a) 卫星平台支持退役任务的能力风险；
b) 轨道控制碰撞风险；
c) 陨落分析。
5.2.6 退役异常处置预案
对退役过释中可能出现的各类异常，制定相应的异常处置预案。
5.3 退役实施流程
5.3.1 退役实施准备
退役实施准备工作一般包括：
a) 测控中心、航天器用户会同研制部门对退役所需遥控指令、注入数据、控制参数等进行审核：
b) 测控中心、航天器用户安排退役所需的测控资源；
c) 其他工作。
5.3.2 退役实施过程
退役实施过程一般为：
a) 航天器用户会同研制部门、测控中心实施退役前航天器有效载荷状态设置；
b) 测控中心会同研制部门实施退役前航天器平台状态设置；
c) 测控中心组织实施退役航天器轨道控制；
d) 测控中心会同研制部门实施航天器钝化；
e) 出现异常时，按照异常处置预案进行处置。
6 退役实施效果评估
退役实施效果评估内容一般包括：
a) 航天器用户和研制部门确认航天器有效载荷状态；
b) 测控中心和研制部门确认航天器平台状态；
c) 测控中心进行航天器轨道符合性评估；
d) 研制部门和测控中心确认航天器钝化效果。
7 管理终止
按照GJB 9100.1中航天器管理终止的内容，终止航天器管理。
