Interaction of acoustics and combustion in rocket engine combustion chambers (C07)

• Subject Area: Hydraulic and Turbo Engines and Piston Engines
• Term: from 2013 to 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 26293245

High frequency combustion instabilities are generated by interaction of combustion processes with the combustion chamber acoustics and present a severe risk for liquid propellant rocket engines. Due to the complexity of the involved processes, the interaction mechanisms are still not fully understood. Self-excited combustion instabilities are studied in a highly representative hydrogen/oxygen research combustor. Within the scope of the second funding period the basic mechanism leading to the observed instability was identi-fied. In the third funding period the coupling of the oscillating flame with the chamber acoustics will be ana-lysed in more detail by the use of 2D flame visualization.

• 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 Heads: Dr. Justin Hardi, since 7/2016; Professor Dr. Michael Oschwald