ISO 11892:2012

Space systems — Subsystems/units to spacecraft interface control document

This International Standard provides space system manufacturing organizations with the minimum interface related items and generic format for creating the interface control document (ICD) which subsystems or units suppliers prepare for spacecraft systems (SC) integrators. In this International Standard, ICD is not defined to contain descriptions regarding various properties of subsystems or units or tasks to be done by suppliers, i.e. performance, functions, endurance to launch mechanical environment, or quality assurance provisions. Such descriptions are presumed to be defined in other contractual documents such as technical specifications.

Systèmes spatiaux — Document de contrôle des interfaces entre les sous-systèmes/unités et le véhicule spatial

General Information

• Status: Published
• Publication Date: 01-Mar-2012
• ICS: 49.140 - Space systems and operations
• Technical Committee: ISO/TC 20/SC 14 - Space systems and operations
• Drafting Committee: ISO/TC 20/SC 14/WG 2 - System requirements, verification and validation, interfaces, integration, and test
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 15-Feb-2023

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 11892
First edition
2012-03-01
Space systems — Subsystems/units to
spacecraft interface control document
Systèmes spatiaux — Document de contrôle des interfaces entre les
sous-systèmes/unités et le véhicule spatial
Reference number
ISO 11892:2012(E)
©
ISO 2012

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ISO 11892:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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Published in Switzerland
ii © ISO 2012 – All rights reserved

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ISO 11892:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 2
4 Subsystem to spacecraft ICD . 2
4.1 General . 2
4.2 Cover sheet . 4
4.3 Applicability . 4
4.4 List of units . 4
4.5 Subsystem block diagram . 5
4.6 Subsystem grounding diagram . 5
4.7 Subsystem operational mode definition (if applicable) . 5
4.8 Unit ICD (if applicable) . 5
4.9 Co-axial cable or waveguide ICD (if applicable) . 5
4.10 Wire harness ICD (if applicable) . 5
5 Unit ICD in detail . 5
5.1 General . 5
5.2 Cover sheet . 6
5.3 Interface data sheet (IDS) . 7
5.4 Pin assignment table .13
5.5 Telemetry command list .13
5.6 Input/output circuits .13
5.7 Grounding diagram .14
5.8 Outline drawing .14
5.9 Three-dimensional CAD model (if applicable) .14
5.10 Non-removal test items (if applicable) .14
5.11 Related technical documents (if applicable) .14
6 Verification .15
6.1 General .15
6.2 Verification method .15
Bibliography .16
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ISO 11892:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 11892 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee
SC 14, Space systems and operations.
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INTERNATIONAL STANDARD ISO 11892:2012(E)
Space systems — Subsystems/units to spacecraft interface
control document
1 Scope
This International Standard provides space system manufacturing organizations with the minimum interface
related items and generic format for creating the interface control document (ICD) which subsystems or units
suppliers prepare for spacecraft systems (SC) integrators.
In this International Standard, ICD is not defined to contain descriptions regarding various properties
of subsystems or units or tasks to be done by suppliers, i.e. performance, functions, endurance to launch
mechanical environment, or quality assurance provisions. Such descriptions are presumed to be defined in
other contractual documents such as technical specifications.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendment) applies.
ISO 15864:2004, Space systems — General test methods for space craft, subsystems and units
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.1.1
subsystem
assembly or group of electrical, thermal and/or mechanical units which is dedicated to specific functions of a
spacecraft system (SC)
3.1.2
unit
independently handled device at the lowest level of hardware assembly that works with specified complex
electrical, thermal and/or mechanical functions
NOTE Several units build up a subsystem. A single unit may occasionally comprise a subsystem by itself.
3.1.3
subsystems/units to spacecraft interface control document
set of documents that defines and controls the electrical, thermal, and mechanical interface requirements
between a subsystem and the spacecraft system (SC)
NOTE Figure 1 illustrates the hierarchy of a space system and the ranges where various interface control documents
are applicable.
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ISO 11892:2012(E)
Space system
Spacecraft to launch vehicle ICD
Launch vehicle
Spacecraft system
Subsystems or units to spacecraft ICD
Subsystem-A
Unit ICD

Unit-A
Unit-B
Unit-C
Co-axial cable/waveguide
Wire harness
Subsystem-B
Subsystem-C
Co-axial cable/waveguide
Wire harness
Hierarchy of a space system and related interface control document (ICD)
3.2 Abbreviated terms
CAD computer aided design
ICD interface control document
IDS interface data sheet
MOI moment of inertia
RF radio frequency
4 Subsystem to spacecraft ICD
4.1 General
A subsystem ICD is a package constructed of sub-documents as shown in Table 1. It shall contain configuration
control information, subsystem definition diagrams, and if applicable, co-axial cable or waveguide or wire
harness in the subsystem. An individual ICD of each unit in the subsystem is normally a separate document.
However, it may be contained as part of the subsystem ICD.
Layered construction of a subsystem ICD package is illustrated in Figure 2.
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ISO 11892:2012(E)
Construction of subsystem to spacecraft ICD package
No Title Description
(Subclause)
1 Cover sheet (with title and document number, revision record 4.2
and table of contents)
2 Applicability 4.3
3 List of units 4.4
4 Subsystem block diagram 4.5
5 Subsystem grounding diagram 4.6
6 Subsystem operational mode definition (if applicable) 4.7
7 Unit ICD (if applicable) 4.8
8 Co-axial cable or waveguide ICD (if applicable) 4.9
9 Wire harness ICD (if applicable) 4.10
Wire harness ICD
Co-axial cable or
Related technical
waveguide ICD
documents
a
Unit-C ICD
Non-removal test
a
items
Unit-B ICD
Three-dimensional
a
Unit-A ICD
CAD mode l
Subsystem
Outline drawing
operational mode
Model
Grounding diagram
definition
Input/output circuits
Subsystem grounding
diagram
Telemetry command list
Subsystem block
List
Pin assignment
diagram
table
List of units Interface data sheet
Subsystem ICD
Unit -A ICD
Cover sheet
Cover sheet
with
with


Title and
Title and
document number

document number
Revision record
Revision record


Table of contents
Table of contents
a
The individual ICD of each unit may be contained as a part of the subsystem ICD.
Layered construction of subsystem ICD package
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ISO 11892:2012(E)
4.2 Cover sheet
4.2.1 Title and document number
The cover sheet of the subsystem ICD shall contain the following items:
— title of the subsystem ICD package;
— document number of the ICD package;
— issue date;
— issuing organization.
4.2.2 Revision record
The revision record shall contain the following items:
— revision number;
— revision date;
— summary of revision contents;
— authorization.
4.2.3 Table of contents
The table of contents shall indicate the name, document number and revision number of the following sub-
documents which build up the subsystem ICD:
— list of units;
— subsystem block diagram;
— subsystem grounding diagram;
— subsystem operational mode definition (if applicable);
— unit ICD (if applicable);
— co-axial cable or waveguide ICD (if applicable);
— wire harness ICD (if applicable);
— non-removal test items (if applicable).
4.3 Applicability
The following information shall be addressed in the ICD:
— applicable documents;
— definitions;
— physical units.
4.4 List of units
The list of units shall contain all units included in the subsystem, including the co-axial cable or waveguide
and/or wire harness provided to the spacecraft system by the subsystem organization. The list of units shall
include the document number and revision record of each unit ICD if it is a separate document.
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ISO 11892:2012(E)
4.5 Subsystem block diagram
The subsystem block diagram shall graphically indicate the connection and relationship of all of the units
included in the subsystem. The subsystem block diagram shall also show the connection and relationship
between the subsystem and other relevant subsystems.
4.6 Subsystem grounding diagram
The subsystem grounding diagram shall graphically indicate the grounding and bonding configuration of all the
units included in the subsystem.
4.7 Subsystem operational mode definition (if applicable)
The subsystem operational mode definition shall indicate all of the operational modes of the subsystem if applicable.
For this International Standard, ‟operational mode” is defined as any operational status which has different
power consumption or heat dissipation from another status. Operational modes can also be differentiated by
mechanical configurations, e.g. before and after deployment.
The definition shall also describe whether transition to the designated mode is caused by the subsystem itself
or by a trigger from another subsystem.
4.8 Unit ICD (if applicable)
The unit ICD shall show the interface information of each unit contained in the subsystem. Details are
defined in Clause 5.
4.9 Co-axial cable or waveguide ICD (if applicable)
The co-axial cable or waveguide ICD shall show the interface information of the co-axial cable or waveguide
connecting the units in the subsystem or connecting the units to other subsystems.
4.10 Wire harness ICD (if applicable)
The wire harness ICD shall show the interface information of the wire harness connecting the units in the
subsystem or connecting the units to other subsystems.
5 Unit ICD in detail
5.1 General
A unit ICD is a document package constructed from a sub-document as shown in Table 2.
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ISO 11892:2012(E)
Construction of unit ICD package
No
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