10 Years of Joint Research at DLR and TU Braunschweig toward Low-Noise Aircraft Design - What Did we Achieve? (invited keynote presentation)

This invited keynote lecture reviews the last years of joint research activities between DLR and TU Braunschweig in the field of low-noise aircraft design. This joint research has been initiated around 2008 between the DLR Institute of Aerodynamics and Flow Technology and the Institute of Aircraft Design and Lightweight Structures at TU Braunschweig. In that time, DLR has developed a first version of an aircraft noise prediction tool called the Parametric Aircraft Noise Analysis Module (PANAM). This tool has been implemented as a module into the aircraft design synthesis code Preliminary Aircraft Design and Optimization (PrADO) by TU Braunschweig. For the first time, a fully automated and fully parametric aircraft design process with integrated noise prediction capabilities was established. The main focus lies on conventional tube-and-wing aircraft with turbofan and turboprop engine concepts. Ever since, both tools have been under constant development and the simulation chain for low-noise aircraft design has been applied to various aircraft concepts. The presentation reviews the tool development, the most important applications, highlights some lessons learnt, and is complemented with an outlook on future developments and applications