GATAC V2 3D comparison study, M3.2.2_12, JTI Cleansky SGO WP3

Kurzfassung

This milestone report is a follow-up report to the milestone-report M3.2.2 10 ”GATAC V2 comparison study”. In this former report the Green Aircraft Trajectories under ATM constraints (GATAC) - optimization tool in its version 2.0 was compared to the DLR optimization suite Multi Objective parameter Synthesis (MOPS). Several problems were optimized with both tools and their performance with respect to quality of convergence, calculation time and user friendlyness was compared. As well, several trajectory optimization problems which were shipped with GATAC were optimized with both tools and their results were compared. These problems featured a subdivision of the flight in three phases (departure, cruise and arrival) and were modeled in the vertical flight plane (x,z)-coordinates. The effect of turning was neglected as well as the coupling between the phases. However in the project’s workplan an investigation of three-dimensional trajectories and their environmental benefit was defined for the current GATAC software version. Up until now, no usable 3-Degrees Of Freedom (DOF) aircraft model has been made available in the project, which made it necessary for several partners to use their own internally developed models to investigate a full three-dimensional flight. In the case of this milestone-report, the used model is a 3-DOF inverse aircraft model developed within the DLR Institute of System Dynamics and Control. It features exhaustive emissions calculation as well as an European Civil Aviation Conference (ECAC) - Doc. 29 noise model implementation to depict some environmental effects of the flight.