Contribution toward single-event and scenario noise assessment of supersonic business jets

Abstract

DLR is involved in technical discussions at ICAO CAEP to quantify aircraft noise generation and define certification regulations for novel supersonic transport aircraft. A major goal is to develop the means for a full environmental assessment of these concepts and technologies to support CAEP’s decision making process. This paper presents the most recent status of the assessment capabilities for the Landing and Take-off phase of novel SST vehicles. Departure procedures are optimized for lowest certification noise levels based on reduction measures as initially proposed by NASA, i.e., variation of take-off speed and thrust setting. Implications on certification levels, noise contour areas, and local air quality are evaluated along the different procedures within an internal DLR project. Within this contribution, the focus of lies on the certification noise levels. Furthermore, the required input data is generated to enable an overall scenario assessment with a corresponding CAEP approved simulation tool. A full simulation of a fleet scenario was not in the scope of this work. Such a fleet scenario assessment is not feasible until reliable data on potential demand and anticipated number of flight operations is established. Overall, the capabilities of the underlying multi-level simulation process are demonstrated, i.e., combining the assessment on a component and overall aircraft level with the transition into a fleet scenario.