Considerations toward uncertainty quantification of single Event noise predictions for novel SST concept Aircraft

Abstract

This contribution discusses the uncertainties associated with single-event aircraft system noise as predicted with so-called Scientific simulation tools. We aim to highlight the inherent uncertainties of such simulations and increase awareness when analyzing these system noise prediction results. The considerations presented here are applicable to predictions with Scientific simulation tools in general but in this study are tailored to a specific case. This contribution presents (1) the authors’ application of uncertainty quantification for aircraft noise simulations, (2) the status quo of research activities, and (3) a specific application case. For this study, an application case that is of high priority to the Committee on Aviation Environmental Protection (CAEP) within the International Civil Aviation Organization (ICAO) is selected. The presented activities aim to support ongoing technical discussions concerning the definition of Landing and Take-off (LTO) noise certification regulations for novel civil supersonic transport aircraft (SST). The findings are compared to results from the literature. Based on the findings, initial conclusions can be derived for the potential community noise impact if these vehicles are in operation. Although the present work focuses on single events, the outcome directly affects whole fleet scenarios because they are assembled from single-event data.