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BS EN ISO 21351:2005

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Space systems. Functional and technical specifications
Available format(s)

Hardcopy , PDF

Superseded date

09-30-2014

Language(s)

English

Published date

09-16-2005

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
  3.1 Terms and definitions
  3.2 Abbreviated terms
4 Functional specification and technical specification
  purpose and description
  4.1 Functional specification purpose and description
  4.2 Technical specification purpose and description
  4.3 FS and TS content
5 Process for establishing a functional specification and
  a technical specification
  5.1 General
  5.2 Process for establishing a functional specification
  5.3 Process for establishing a technical specification
6 Technical requirements description
  6.1 General description
  6.2 Identification of attributes assigned to technical
      requirements
      6.2.1 Introduction
      6.2.2 Functional requirements description
      6.2.3 Mission requirements description
      6.2.4 Interface requirements description
      6.2.5 Environmental requirements description
      6.2.6 Physical requirements description
      6.2.7 Operational requirements description
      6.2.8 Human factor requirements description
      6.2.9 (Integrated) logistics support requirements
             description
      6.2.10 Product assurance (PA) requirements description
      6.2.11 Configuration requirements description
      6.2.12 Design requirements description
7 Requirements and recommendations for functional
  specifications and technical specifications
  7.1 Requirements and recommendations common to FS and TS
      7.1.1 General
      7.1.2 Responsibility
      7.1.3 Technical requirements organisation
      7.1.4 Unique technical reference
      7.1.5 Configuration management
      7.1.6 Format
      7.1.7 Supplementary information
      7.1.8 Restrictions
      7.1.9 Severity classification
  7.2 Requirement specific to the functional specification
8 Requirements and recommendations for characterizing the
  technical requirements
  8.1 Requirements and recommendations for the characteristics
      of a technical requirement common to FS and TS
      8.1.1 Performance
      8.1.2 Justification
      8.1.3 Configuration management and traceability
      8.1.4 Ambiguity
      8.1.5 Uniqueness
      8.1.6 Identifiability
      8.1.7 Singularity
      8.1.8 Completeness
      8.1.9 Prioritization
  8.2 Requirements and recommendations for the characteristics
      of a technical requirement in the FS
      8.2.1 Flexibility
      8.2.2 Severity
      8.2.3 Maturity
  8.3 Requirements and recommendations for the characteristics
      of a technical requirement in the TS
      8.3.1 Verification
      8.3.2 Attainability
      8.3.3 Tolerance
      8.3.4 Risk
  8.4 Requirements and recommendations for the wording
      8.4.1 General format
      8.4.2 Required verbal form
      8.4.3 Format restrictions
Bibliography
Figures

Provides an overview of the respective purposes and positions of functional and technical specifications, their required contents, and the process for developing these documents.

Committee
ACE/68
DevelopmentNote
Supersedes 02/711948 DC (11/2005)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

EN 12973 : 2000
EN 1325-1 : 1996 VALUE MANAGEMENT, VALUE ANALYSIS, FUNCTIONAL ANALYSIS VOCABULARY - PART 1: VALUE ANALYSIS AND FUNCTIONAL ANALYSIS
EN 13292:1999 Space engineering standards - Policy and principles
EN 13290-2:2001 Space project management - General requirements - Part 2: Project breakdown structure
EN ISO 17666:2003 Space systems - Risk management (ISO 17666:2003)
EN 13701:2001 Space systems - Glossary of terms
ISO 14300-1:2011 Space systems — Programme management — Part 1: Structuring of a project
EN 13290-4:2001 Space project management - General requirements - Part 4: Project phasing and planning
ISO 9000:2015 Quality management systems — Fundamentals and vocabulary
ISO/IEC Guide 2:2004 Standardization and related activities General vocabulary
ISO 17666:2016 Space systems — Risk management
EN ISO 9000:2015 Quality management systems - Fundamentals and vocabulary (ISO 9000:2015)
EN 14725:2003 Space engineering - Verification

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