|Publisher DOI:||10.25967/550184||Title:||Fuel-efficient flight control design for a hypersonic airliner||Language:||English||Authors:||Bodmer, Daniel
Shah, Rhea Deven
|Keywords:||STRATOFLY; Flight control; Feedback linearization; Trajectory simulation; Trajectory optimization||Issue Date:||Aug-2021||Publisher:||Deutsche Gesellschaft für Luft- und Raumfahrt||Source:||70. Deutscher Luft- und Raumfahrtkongress, (DLRK 2021)||Abstract (english):||
The determination of realistic flight mission characteristics, such as fuel consumption and flight time, requires fuel-optimal flight trajectories where the vehicles total trip fuel converges to a minimum. Within the Stratospheric Flying Opportunities for High-Speed Propulsion Concepts research project, one of the main challenging factors is the design of artificial flight controllers for maintaining 4D fuel-optimal trajectories for the STRATOFLY MR3 vehicle. In this paper, we propose a continuous climb cruise (CCC) flight controller as well as a zoom dive (ZD) flight controller which are derived using Feedback Linearization and embedded in a MATLAB-based trajectory simulation program. This incorporates the establishment of a proper control design model, an aircraft state estimator and the limitation of the plants control inputs to ensure a bounded fast-time, forward integration of all aircraft state variables based on a 3 degrees of freedom point-mass model. Simulation results are presented showing that the CCC controller is primarily used in the hypersonic cruise phase - covering the main flight segment of MR3 - and that the ZD controller is used in the transonic region (while the vehicle reaches Mach 1), both ensuring a total decay of 2.98 % in the vehicles fuel consumption for a reference flight mission from Brussels to Sydney.
|Conference:||70. Deutscher Luft- und Raumfahrtkongress, (DLRK 2021)||URI:||http://hdl.handle.net/11420/10802||DOI:||10.15480/882.3877||Institute:||Lufttransportsysteme M-28||Document Type:||Chapter/Article (Proceedings)||Project:||Stratospheric Flying Opportunities for High-Speed Propulsion Concepts||Funded by:||European Union||More Funding information:||This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 769246 within the Stratospheric Flying Opportunities for High-Speed Propulsion Concepts (STRATOFLY) Project.||License:||In Copyright||Cites:||10.25967/550184|
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