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Fundamental Framework to Plan 4D Robust Descent Trajectories for Uncertainties in Weather Prediction
| Content Provider | MDPI |
|---|---|
| Author | Kamo, Shumpei Rosenow, Judith Fricke, Hartmut Soler, Manuel |
| Copyright Year | 2022 |
| Description | Aircraft trajectory planning is affected by various uncertainties. Among them, those in weather prediction have a large impact on the aircraft dynamics. Trajectory planning that assumes a deterministic weather scenario can cause significant performance degradation and constraint violation if the actual weather conditions are significantly different from the assumed ones. The present study proposes a fundamental framework to plan four-dimensional optimal descent trajectories that are robust against uncertainties in weather-prediction data. To model the nature of the uncertainties, we utilize the Global Ensemble Forecast System, which provides a set of weather scenarios, also referred to as members. A robust trajectory planning problem is constructed based on the robust optimal control theory, which simultaneously considers a set of trajectories for each of the weather scenarios while minimizing the expected value of the overall operational costs. We validate the proposed planning algorithm with a numerical simulation, assuming an arrival route to Leipzig/Halle Airport in Germany. Comparison between the robust and the inappropriately-controlled trajectories shows the proposed robust planning strategy can prevent deteriorated costs and infeasible trajectories that violate operational constraints. The simulation results also confirm that the planning can deal with a wide range of cost-index and required-time-of-arrival settings, which help the operators to determine the best values for these parameters. The framework we propose is in a generic form, and therefore it can be applied to a wide range of scenario settings. |
| Starting Page | 109 |
| e-ISSN | 22264310 |
| DOI | 10.3390/aerospace9020109 |
| Journal | Aerospace |
| Issue Number | 2 |
| Volume Number | 9 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-02-17 |
| Access Restriction | Open |
| Subject Keyword | Aerospace Robust Aircraft Trajectory Optimization Robust Optimal Control 4d Trajectory Optimal Descent Continuous Descent Operations Global Ensemble Forecast System |
| Content Type | Text |
| Resource Type | Article |
