Objective For trans-atmospheric transport systems with high flight Mach numbers it is necessary to keep the combustion process of the SCRAM jet engine in the supersonic regime in order to minimize the pressure losses by shocks. Only hydrogen is appropriate as a fuel for supersonic flame stabilisation because of its high burning rate. This project will aim to improve the stabilisation of the flames. For this purpose a supersonic wind tunnel with a maximum Mach number of 2. l is available at Munich. Good optical access to the wind tunnel provides a lot of optical data about the combustion and mixing process. Up to now hydrogen flames in a supersonic flow have been stabilized by backward facing steps near the walls. The next stage will be to hold the flame in the middle of the channel by means of micro-struts, backward facing steps and ramps and to keep the flame itself in the supersonic regime. The NIS participant will contribute to the adaptation of the geometry of the combustor and flame stabiliser such as height and diameter of the micro-strut, and angles and length of ramps. With additional induced weak shock waves the influence of shock waves on the mixing process will be investigated. The project co-ordinator will contribute his experience of optical techniques such as Raman spectroscopy, laser-induced fluorescence, and Schlieren photographs, and his optical devices to obtain quantitative data relating to the combustion and mixing process without any mechanical influence of the process itself.The main result of the project will be a small-scale SCRAM jet combustor working at flight Mach numbers of 7 to 8. Ignition and flame stabilisation will be achieved by oblique shocks. Programme(s) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Topic(s) 68 - Energy Call for proposal Data not available Funding Scheme Data not available Coordinator Technische Universität München EU contribution No data Address Arcisstraße 21 80333 München Germany See on map Total cost No data Participants (2) Sort alphabetically Sort by EU Contribution Expand all Collapse all European Space Agency Netherlands EU contribution No data Address 2200 AG Noordwijk See on map Total cost No data Moscow State Aviation Institute Russia EU contribution No data Address 125871 Moscow See on map Total cost No data
