Überblick über das DLR-Projekt ELTON_SST

Abstract

The DLR-project ELTON_SST (Estimation of Landing and Take-Off Noise of SuperSonic Transport) was established in 2020 to support EASA and the German BMVI with numerical data in order to assess the noise performance of potential supersonic aircraft. Five departments of the DLR Institute of Aerodynamics and Flow Technology and Institute of Propulsion Technology are involved. The project is split into two phases. The first phase covers the landing and take-off (LTO) noise estimation based on analytical and empirical models and the verification of the models with published data. A one-dimensional engine design is performed based on data published by NASA for the 55t STCA configuration. The fidelity of the simulations will be increased in the second phase. RANS simulations are performed to increase the accuracy of the aerodynamic performance analysis and acoustic BEM simulations are performed to verify acoustic assumptions made in the first phase, for example the reduction of fan noise due to structural shielding. A three-dimensional engine geometry and high-lift devices will be designed in this second project phase.