Linke, FlorianFlorianLinkeLiebhardt, BerndBerndLiebhardtBodmer, DanielDanielBodmer2023-09-012023-09-012020-06AIAA AVIATION FORUM (2020 )https://hdl.handle.net/11420/42930A methodology is presented to simulate and optimize 4D trajectories for hypersonic airliners. The software tool is embedded in MATLAB and represents a further development of the Trajectory Calculation Module (TCM) which was developed by the DLR Institute of Air Transportation Systems. This simulation model is divided into a performance module which deals with the prediction of the aircraft’s vertical flight path as a function of given airspeeds, altitudes and the selected thrust settings (VNAV) as well as a lateral navigation module to determine the aircraft’s lateral flight path by detecting route waypoints and, if necessary, initiating curve flights (LNAV). The scientific contribution of this study is to point out trade-offs between gaseous emissions and flight altitude so that the VNAV will be - based on the minimization of a weighted cost function 𝑱 - optimized iteratively with respect to ecological (e.g. emission-optimized) or economic (e.g. fuel-optimized) objectives. This work was done in the context of the European Union project STRATOFLY.enhttps://creativecommons.org/licenses/by/4.0/climate impactemissionsHypersonic flightpassenger comforttrajectory optimizationCivil Engineering, Environmental EngineeringConference Paper10.15480/882.835210.15480/882.8352Conference Paper