Experimental and numerical investigation of dual bell nozzle flow under realistic flight conditions (K02*)

• Subject Area: Mechanical Process Engineering
• Term: from 2016 to 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 26293245

The first funding phases focused on the understanding and predicting of flow phenomena in dual bell noz-zles, first on a fundamental level, then on hot flow combustion and CFD level. For qualification as main stage engine nozzle, the dual bell must be studied under realistic flight conditions. Therefore, cold flow investigations on ambient air pressure fluctuations and contour ovalization effect on transitional behaviour will be conducted and a technology demonstration on hot flow tests of C/C-SiC nozzle realized. Based on the gained insight, contour optimization and flight trajectory calculation will be conducted for future potential Ariane configurations.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 40: Technological Foundations for the Design of Thermally and Mechanically Highly Loaded Components of Future Space Transportation Systems
• Applicant Institution: Technische Universität München (TUM)
• Co-Applicant Institution: Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
• Project Head: Dr.-Ing. Chloé Génin