Wolfram Ullrich has dealt with the combustion noise of aircraft engines within the framework of the EU project RECORD (Research on Core Noise Reduction) and documented the results of his work in his dissertation "Combustion Noise Prediction with Linearized Navier-Stokes Equations and Spectral Sound Sources". With the successful defence of the dissertation on 2.12.2019, he received the title of Dr. Ing.. He is the hundredth TUM doctoral candidate to be supervised by Professor Sattelmayer.