The partners of ETW for exchange of experience in wind tunnel testing and for cooperation with further development of instrumentation and test techniques are primarily the aerospace research organizations of the three participating countries:

• DLR (Deutsches Zentrum für Luft- und Raumfahrt), 
• UK Aerospace Technology Institute (ATI) and QQ (QinetiQ), 
• Royal NLR (Stichting Koninklijk Nederlands Lucht- en Ruimtevaartcentrum), 

which are members of EREA (Association of European Research Establishments in Aeronautics).

ACARE (Advisory Council for Aeronautics Research in Europe) identified ETW, DNW-LLF, and ONERA-S1MA as the "strategic facilities" due to investments higher than €100m, and an operating budget as high as €10m/year. All three are open to any customer and address the industrial market on a commercial basis as well as national and EU programmes. The EU-funded ESWIRP project brought together these facilities across Europe to optimise research infrastructures and improve their performance. The High Level Group on Aviation Research emphasized in Flightpath 2050, Europe's Vision for Aviation, the goal to further maintain and continuously develope strategic European aerospace test, simulation and development facilities.

ETW or ETW's team members are active in the following Associations and Scocieties (alphabetical order):

• AAAF/3AF (Association Aéronautique et Astronautique de France)
• AIAA (American Institute of Aeronautics and Astronautics)
• ALROUND (Aktionsgemeinschaft L&R Unternehmen in Deutschland e.V.)
• BDLI (Bundesverband der Deutschen Luft- und Raumfahrtindustrie e.V.)
• CEAS (Council of European Aerospace Societies)
• DGLR (Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal - Oberth e.V.)
• FLuR (Forum Luft- und Raumfahrt e.V.)
• ICAS (International Council of the Aeronautical Sciences)
• KNVvL (Koninklijke Nederlandse Vereniging voor Luchtvaart)
• RAeS (Royal Aeronautical Society)
• STAI (Supersonic Tunnel Association International)

In addition, regular contacts have been established to ARA (Aircraft Research Association Ltd.), to ONERA (Office National d´Etudes et de Recherches Aérospatiales), and to NASA Langley Research Center (LARC).

ETW's industrial clients are the manufacturers of advanced aircraft all over the world.