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Program validation tests for ETID (Expander-cycle Technology Integrated Demonstrator), which is designed to develop new technologies for upper stage rocket engines, were completed on March 22, 2019, with the successful hot-fire testing campaign. A total of 14 thrust chamber and valve components developed by ArianeGroup and its European partners have been undergoing testing at the German Aerospace Center, DLR, in Lampoldshausen, Germany, since June 2018.
The ETID project was carried out within ESA’s Future Launcher Preparatory Programme. The European partner organizations which are making a significant contribution to the ETID program – GKN Aerospace (Sweden), Safran Aero Boosters (Belgium), Aerospace Propulsion Products (Netherlands), and Carinthian Tech Research (Austria), as well as DLR Institute of Space Propulsion – today celebrated this success in Lampoldshausen along with representatives from ArianeGroup, the project lead contractor.
The test campaign went particularly well. Our expectations regarding new thrust chamber and valve technologies were entirely fulfilled – and even surpassed with respect to component reliability and robustness. The validated technology portfolio is now ready to further improve the cost-efficiency of the European space launcher family.”
The purpose of the ETID demonstrator is to develop thrust chamber components and subsystems to enable even more cost-efficient European space launcher production. One of the single-piece, full-scale 3D-printed injector heads developed by ArianeGroup was deployed on the demonstrator, a 10-ton class real-size thrust chamber. This injector head will in the future replace conventional injector heads, which are made up of over 400 individual parts. A cost-effective combustion chamber made of copper and various multiple igniters also underwent testing in space-representative conditions.
It is crucial that we are already working now to prepare the technologies that will be used on the launchers from 2030, and the progress made in parallel with the development of the Prometheus® very low-cost engine is taking us forward in this direction. With the success of the ETID tests, ArianeGroup and the European Space Agency (ESA), supported by the German space agency DLR, have reached a further important milestone in the development of innovative technologies and thus the development of ever more competitive European space launchers.”
This success of the ETID demonstrator complements a series of cryogenic propellant propulsion innovations (liquid oxygen/liquid hydrogen and liquid oxygen/liquid methane), also developed for Prometheus®, the European demonstrator for a very low-cost, potentially reusable engine, for which testing is also proceeding optimally.
Prometheus® and ETID are precursors of future European space launcher engines for the 2030 time-frame. The innovative technologies and industrial processes developed under these demonstrator programs will also contribute to the propulsion systems used on Ariane 6 evolutions.
The Prometheus® program design review was successfully completed on February 1, 2019 at ArianeGroup’s Vernon site in France. The industrialization review is scheduled for summer 2019. These are conducted by ArianeGroup teams in Ottobrunn, Germany, and Vernon, along with those from ESA, with the support of specialists from the French and German space agencies, CNES and DLR.