The Concurrent Design Facility (CDF) is the European Space Agency main assessment center for future space missions and industrial review. Located at ESTEC, ESA's technical center in Noordwijk in The Netherlands, it has been operational since early 2000.

As suggested by its name, the CDF uses concurrent engineering methodology to perform effective, fast and cheap space mission studies. Equipped with a state-of-the-art network of computers, multimedia devices and software tools, the CDF allows teams of experts to perform design studies during working sessions.^{[not verified in body]}

The CDF is mainly in charge of performing the assessment studies of future missions for the European Space Agency. These assessment studies are performed in the early phases of mission and spacecraft design; the so-called "Phase 0" or "Pre-phase A" of the ESA Project Phases^[1] in which needs are identified and Mission Analysis is performed.

Phase 0 focusses the following:^[2]

• Identification and characterisation of the intended mission.
• Expression in terms of needs, expected performance and dependability and safety goals.space
• Assessment of operating constraints, in particular as regards the physical and operational environment.
• Identification of possible system concepts, with emphasis on the degree of innovation and any critical aspect.
• Preliminary assessment of project management data (organisation, costs, schedules).

In addition to the "normal" studies, the CDF is currently^[when?] being used as the assessment center for the ESA Cosmic Vision program.^{[citation needed]}

A list of assessment studies accomplished by the CDF is:^[3]

The CDF design room was designed and equipped with relevant hardware and software tools, with the aim of creating an effective communication and data interchange environment among team members.^{[citation needed]} In 2008, ESA donated its older CDF facility to the International Space University (ISU) in Strasbourg, for educational purposes.

• Advanced Concepts Team
• Concurrent engineering
• ECSS-E-TM-10-25A
• Open Concurrent Design Server

• ESA CDF website [4]
• CDF published reports [5]
• RHEA Group RHEA Group Concurrent Design Engineering
• DLR System Analysis and Space Segments