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Touchdown Dynamics and the Probability of Terrain Related Failure of Planetary Landing Systems - A Contribution to the Landing Safety Assessment Process

Witte, Lars (2015) Touchdown Dynamics and the Probability of Terrain Related Failure of Planetary Landing Systems - A Contribution to the Landing Safety Assessment Process. Dissertation, University of Bremen.

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Official URL: http://nbn-resolving.de/urn:nbn:de:gbv:46-00104952-14

Abstract

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.

Item URL in elib:https://elib.dlr.de/102482/
Document Type:Thesis (Dissertation)
Title:Touchdown Dynamics and the Probability of Terrain Related Failure of Planetary Landing Systems - A Contribution to the Landing Safety Assessment Process
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Witte, LarsDLR Bremen, lars.witte (at) dlr.deUNSPECIFIED
Date:20 November 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:136
Status:Published
Keywords:Landing safety assessment, landing site characterization, planetary exploration, touchdown dynamics, terrain-related failure, multibody landing simulation
Institution:University of Bremen
Department:Department of Production Engineering
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben Landetechnologien
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Explorationssysteme
Deposited By: Witte, Dr. Lars
Deposited On:12 Feb 2016 09:50
Last Modified:31 Jul 2019 19:59

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