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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
中華人民共和國國家軍用標準
FL 1640 GJB 9100.6-2017
航天器退役規程
第6部分：近地軌道航天器
Regulations for spacecrafts decommissioning-
Part 6：Low earth orbit spacecraft
2017-09-12發布 2017-12-01實施
中央軍委裝備發展部 頒布
前言
GJB 9100《航天器退役規程》分為6個部分：
a) 第1部分：總則；
b) 第2部分：深空探測器；
c) 第3部分：空間站；
d) 第4部分：地球靜止軌道航天器；
e) 第5部分：中高軌道航天器；
f) 第6部分：近地軌道航天器。
本部分是GJB 9100的第6部分。
木部分由戰略支援部隊航天系統部裝備部提出。
航天器退役規程
第6部分：近地軌道航天器
1 范圍
本部分規定了近地軌道航天器退役的工作準則、內容和實施流程。
本部分適用于近地軌道航天器的退役工作。
2 引用文件
下列文件中的有關條款通過引用而成為本部分的條款。凡注日期或版次的引用文件，其后的任何修改單(不包含勘誤的內容)或修訂版本都不適用于本部分，但提倡使用本部分的各方探討使用其最新版本的可能性。凡不注日期或版次的引用文件，其最新版本適用于本部分。
GJB 7893.21 衛星在軌測控管理規程 第21部分：離軌管理
GJB 9100.1 航天器退役規程 第1部分：總則
3 退役工作準則
航天器退役工作準則一般包括：
a) 防止退役航天器對近地軌道區域長期干擾；
b) 降低退役航天器分裂解體的可能性；
c) 避免退役航天器在退役過程中與其他在軌航天器的碰撞。
4 退役申請
按照GJB 9100.1的要求中請退役。
5 退役實施
5.1 退役技術方案制定
5.1.1 退役技術方案內容
退役技術方案內容一般包括：
a) 航天器退役實施前狀態評估；
b) 航天器狀態設置；
c) 退役技術要求。
5.1.2 航天器退役實施前狀態評估
航天器退役實施前對航天器狀態和性能進行評估，確認退役實施的可行性和存在的風險，內容一般包括：
a) 燃料評估，確認具有軌控能力的衛星符合航天器軌控要求；
b) 載荷評估，確認載荷開關機及其他狀態；
c) 其他評估，確認各分系統及空間環境影響符合要求。
5.1.3 航天器狀態設置
航天器狀態設置一般包括：
a) 航天器有效載荷狀態設置；
b) 航天器平臺狀態設置。
5.1.4 退役技術要求
退役技術要求一般包括：
a) 具有軌控能力的航天器軌控要求；
b) 航天器鈍化要求；
c) 異常處置要求。
5.2 退役實施方案制定
5.2.1 退役實施方案內容
退役實施方案內容一般包括：
a) 退役實施要求；
b) 退役實施技術規定；
c) 退役實施細則；
d) 退役實施風險分析及對策；
e) 退役異常處置預案。
5.2.2 退役實施要求
退役實施要求一般包括：
a) 航滅器退役實施時機；
b) 航天器跟蹤弧段要求；
c) 航天器狀態設置要求；
d) 航天器軌道控制要求；
e) 航天器鈍化要求；
f) 相關方職責。
5.2.3 退役實施技術規定
根據GJB 7893.21以及退役技術方案制定退役實施技術規定，內容一般包括：
a) 航天器有效載荷狀態設置規定；
b) 航天器平臺狀態設置規定；
c) 具備軌道控制條件的航天器控制策略制定；
d) 航天器鈍化規定。
5.2.4 退役實施細則
退役實施細則內容一般包括：
a) 測控實施計劃；
b) 遙控操作要求；
c) 遙控操作內容；
d) 航天器狀態監視內容。
5.2.5 退役實施風險分析及對策
測控中心會同研制部門、航天器用戶分析航天器退役實施風險并制定相應對策，一般包括：
a) 衛星平臺支持退役任務的能力風險；
b) 軌道控制碰撞風險；
c) 隕落分析。
5.2.6 退役異常處置預案
對退役過釋中可能出現的各類異常，制定相應的異常處置預案。
5.3 退役實施流程
5.3.1 退役實施準備
退役實施準備工作一般包括：
a) 測控中心、航天器用戶會同研制部門對退役所需遙控指令、注入數據、控制參數等進行審核：
b) 測控中心、航天器用戶安排退役所需的測控資源；
c) 其他工作。
5.3.2 退役實施過程
退役實施過程一般為：
a) 航天器用戶會同研制部門、測控中心實施退役前航天器有效載荷狀態設置；
b) 測控中心會同研制部門實施退役前航天器平臺狀態設置；
c) 測控中心組織實施退役航天器軌道控制；
d) 測控中心會同研制部門實施航天器鈍化；
e) 出現異常時，按照異常處置預案進行處置。
6 退役實施效果評估
退役實施效果評估內容一般包括：
a) 航天器用戶和研制部門確認航天器有效載荷狀態；
b) 測控中心和研制部門確認航天器平臺狀態；
c) 測控中心進行航天器軌道符合性評估；
d) 研制部門和測控中心確認航天器鈍化效果。
7 管理終止
按照GJB 9100.1中航天器管理終止的內容，終止航天器管理。
