ECSS-E-ST-10C – System engineering general requirements (6 March 2009)

This Standard has been cancelled and superseded by ECSS-E-ST-10C Rev.1 (15 February 2017.

This Standard cancels and replaces:


It also cancels and replaces the material specific to engineering of ECSS-E-00A (19 April 1996).



This standard specifies the systems engineering implementation requirements for space systems and space products development.

Specific objectives of this standard are:

  • to implement the system engineering requirements to ensure a firm technical basis and to minimize technical risk and cost for space systems and space products development;
  • to specify the essential system engineering tasks, their objectives and outputs;·
  • to implement integration and control of engineering disciplines and lower level systems engineering work;
  • to implement the “customer–system–supplier model” through the development of systems and products for space applications.


This Standard is intended to apply to all space systems and product, at any level of the system decomposition, including hardware, software, procedures, man-in-the-loop, facilities and services.

Through the document and its annexes the requirements however apply as they are to complex systems only; for lower level elements tailoring will be necessary.

Specific requirements related to systems engineering, like functional analysis, technical specification, verification, and testing are specified in dedicated documents and standards within the set of ECSS system engineering standards ECSS-E-10-XX.

Discipline or element specific engineering implementation requirements are covered in dedicated ECSS standards. These standards are based on the same principles, process and documentation model.

The applicability of each these standards can therefore not be considered in isolation from the others.

ECSS-E-HB-10 contains guidelines related to this standard, including a description of the reference system engineering process for a space system and its products.


NOTE 1 Discipline, is defined in ECSS-M-ST-10, as “a specific area of expertise within a general subject”. The name of the discipline normally indicates the type of expertise, e.g. in the ECSS system mechanical engineering, software and communications are disciplines within the engineering domain.

NOTE 2 The requirements on the systems engineering process are gathered in E-10 System Engineering; specific aspects of the SE process are further elaborated in dedicated standards.


This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.



Change Requests to this Standard exits. For details visit the ECSS Change Request database
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Change Request database for ECSS-E-10 Change Requests

This standard is supported by the following ECSS Technical Memorandum: