Experimental investigations for lifetime prediction (D09)

• Subject Area: Mechanical Properties of Metallic Materials and their Microstructural Origins
• Term: from 2013 to 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 26293245

To improve the understanding of the nozzle lifetime TP D9 will exploit the test stands developed in the 2nd FP for reliable experiments with innovative measuring comprising the hot gas flow, defining the heat flux to the structural surface, the nozzle structure, interacting with hot gas and coolant flow, and the flow inside the cooling ducts, convecting the heat from the metallic walls. A focus of work is now a doubling of the com-bustion pressure, to reach significantly higher heat fluxes. The influence of the surface roughness on heat transfer (hot gas and cooling duct side) will be analyzed. Finally, the application of thermal barrier coatings will show the improvement regarding damage protection.

• 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: Technische Universität Braunschweig
• Project Heads: Professor Dr.-Ing. Oskar Haidn; Dr.-Ing. Matthias Haupt; Dr.-Ing. Peter Scholz