Development of a model to calculate and optimize hypersonic aircraft trajectories with respect to engine gaseous emissions

A 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.

Subjects

climate impact

emissions

Hypersonic flight

passenger comfort

trajectory optimization

DDC Class

624: Civil Engineering, Environmental Engineering

Funding(s)

Stratospheric Flying Opportunities for High-Speed Propulsion Concepts

More Funding Information

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 769246

Publication version

draft

Lizenz

https://creativecommons.org/licenses/by/4.0/

Name

2021_Bodmer - Development of a Model to Calculate and Optimize Hypersonic Aircraft Trajectories with Respect to Engine Gaseous Emissions (Abstract).pdf

Size

1.93 MB

Format

Adobe PDF

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Development of a model to calculate and optimize hypersonic aircraft trajectories with respect to engine gaseous emissions