Hülsmann, Maren (2017) Uncertainty Dispersion Analysis and Optimal Control of Atmospheric Re-Entry. Masterarbeit, Universität Bremen.
PDF
6MB |
Kurzfassung
In this study, the atmospheric re-entry onto Earth and Mars is analysed concerning uncertainties. These uncertainties can arise in the modelling and the initial entry angle and velocity during the re-entry leading to hazards and malfunctions influencing the mission success. Therefore, the temporal evolution of uncertainties throughout the re-entry, descent and landing is examined using the Stochastic Liouville Equation. This equation yields probability density functions depending on the states of the system dynamics and the time. From this a most probable trajectory together with 1-sigma and 3-sigma error bars can be estimated giving an impression on the influence of uncertainties. Furthermore, the covariance matrices are deduced from the probability density functions generating landing dispersions at the end time of the re-entry. Beside ballistic trajectories also optimal trajectories for manoeuvrable re-entry vehicles are analysed. In this case, the re-entry vehicle is controllable in its flight path angle and the trajectories are optimized concerning the descent time.
elib-URL des Eintrags: | https://elib.dlr.de/186827/ | ||||||||
---|---|---|---|---|---|---|---|---|---|
Dokumentart: | Hochschulschrift (Masterarbeit) | ||||||||
Titel: | Uncertainty Dispersion Analysis and Optimal Control of Atmospheric Re-Entry | ||||||||
Autoren: |
| ||||||||
Datum: | August 2017 | ||||||||
Referierte Publikation: | Nein | ||||||||
Open Access: | Ja | ||||||||
Seitenanzahl: | 101 | ||||||||
Status: | veröffentlicht | ||||||||
Stichwörter: | Re-entry, uncertainty estimation, landing ellipse, stochastic liouville equation, optimal control | ||||||||
Institution: | Universität Bremen | ||||||||
Abteilung: | Fachbereich 3 - Mathematik/Informatik | ||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||
HGF - Programm: | Raumfahrt | ||||||||
HGF - Programmthema: | Erforschung des Weltraums | ||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||
DLR - Forschungsgebiet: | R EW - Erforschung des Weltraums | ||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Vorhaben Landetechnologien (alt) | ||||||||
Standort: | Bremen | ||||||||
Institute & Einrichtungen: | Institut für Raumfahrtsysteme > Land und Explorationstechnologie | ||||||||
Hinterlegt von: | Scharringhausen, Marco | ||||||||
Hinterlegt am: | 13 Jun 2022 09:56 | ||||||||
Letzte Änderung: | 13 Jun 2022 09:56 |
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags