ECSS-E-10 Part 1B: System engineering – Part 1: Requirements and process (18 November 2004)

This Standard has been cancelled and replaced by ECSS-E-ST-10C (6 March 2009).

The purpose of this Standard is to lead the actors of the “customer-system-supplier model” (as described in 4.1.2) through the development of systems (including hardware, software, man-in-the-loop, facilities and services) for space applications. It specifies system engineering implementation requirements for space systems and space products development.

The objectives of this Standard are as follows.

  • To assist in defining, performing, managing, and evaluating system engineering efforts to ensure that the programme has a firm organizational basis, able to minimize technical risk due to uncertain understanding of delegated technical responsibilities.
  • To facilitate minimization of cost by defining essential system engineering tasks, their objectives and their organization.
  • To incorporate the key aspects of the space standardization initiatives to improve capture requirements, implement multi-disciplinary team-work including suppliers, establish the requirements at an early stage in the process, focus on process control rather than inspection, and encourage overall risk management rather than risk avoidance.


When viewed from the perspective of a specific project context, the requirements specified in this Standard should be tailored to match the genuine requirements of a particular profile and circumstances of a project.

NOTE Tailoring is a process by which individual requirements of specifications, standards and related documents are evaluated and made applicable to a specific project, by selection and in some exceptional cases, modifications of existing or addition of new requirements. [ECSS-M-00-02A, Clause 3]


This Standard cancels and replaces ECSS-E-10A Space engineering – System engineering (19 April 1996).