Status of Gel Propulsion in the Year 2010 with a Special View on the German Activities

Gel propellants are interesting candidates for rocket and ramjet propulsion systems. Due to their non-Newtonian flow behavior they offer the possibility to built throttleable engines with easy handling and storage capabilities. The current publication gives a very short description of the actual state of knowledge and technology development whereas a special focus will be given on the activities within the scope of the German Gel Technology Program. Furthermore a short overview about some existing and new proposals for applications of gel propulsion systems is given. Summarizing it can be said that up to now the understanding of basic processes as well as the knowledge about combustor and engine technology on gel propulsion has significantly improved, but there are still open gaps to close.