Berling, JanJanBerlingHastedt, PhilippPhilippHastedtWanniarachchi, Shashini ThamarasieShashini ThamarasieWanniarachchiVieregg, AndreasAndreasViereggGertz, CarstenCarstenGertzTurau, VolkerVolkerTurauWerner, HerbertHerbertWernerGollnick, VolkerVolkerGollnick2025-03-312025-03-312025-03-2873. Deutscher Luft- und Raumfahrtkongress, DLRK 2024https://hdl.handle.net/11420/55057A modular urban air mobility (UAM) simulation toolchain was iteratively developed in the project ULTRAS (Urban Air Transportation Simulation). Twelve modules combined passenger demand, vertiports, routing, trajectories, sectorized capacities, costs, scheduling, and infrastructure scaling, communication, and control (GNC). Three iterations evolved modules from minimum viable products (MVP) to mature frameworks, adding and adapting assumptions, functionality, and interfaces. In each iteration, modules were integrated to a workflow, enabling comprehensive simulation and evaluation.enTechnology::629: Other Branches::629.1: Aviation::629.13: Aviation EngineeringConference Paper10.25967/630274Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.Conference Paper