Touchdown Dynamics and the Probability of Terrain Related Failure of Planetary Landing Systems : A Contribution to the Landing Safety Assessment Process
Veröffentlichungsdatum
2015-11-20
Autoren
Betreuer
Gutachter
Zusammenfassung
Landing safety assessment is an integral element of the planning of a landing mission. This thesis contributes to such assessment with the modelling and deduction of the functional limits of a legged landing system and its terrain-related failure probabilities. A mathematical method has been developed to determine these terrain-related failure probabilities. The lander's touchdown dynamics is represented by a high-fidelity numerical multibody simulation which is validated by experimental data from a dedicated test campaign. The analysis of the terrain-related failure probabilities remains incomplete without knowledge about the geotechnical properties of the landing site. This information is obtained from a landing site characterization. An analysis step extracts this information from high resolution digital terrain models under consideration of the specific baselength determined by the landing platform's footprint. A robotic lunar landing mission is used as application case study.
Schlagwörter
Landing safety assessment
;
landing site characterization
;
planetary exploration
;
touchdown dynamics
;
terrain-related failure
;
multibody landing simulation
Institution
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Englisch
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00104952-1.pdf
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23.26 MB
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Adobe PDF
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