The SART (Space Launcher Systems Analysis) group is responsible within DLR for the study and the development of new proposals for expendable launch vehicles. While the VENUS (Vega New Upper Stage) project which ended in June 2011, addressed small launch vehicles, the on-going NGL (Next Generation Launcher) study considered medium class launch vehicles. An advanced TSTO (two stages to orbit) launch vehicle considered as an evolution of the Vega launch vehicle is also currently under-study. SART also plays a key role in the WOTAN study.
Current and recent expendable launch vehicle concepts studied by the SART group:
Note that all launcher concepts presented on this page are under investigation to obtain a better understanding of futer ELV options. For none of the launchers, even the most promising ones, currently a development decision is implicated.