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Hammering beneath the surface of Mars - Forensic Engineering of failures in the HP3-Mole by applying multi-body dynamics simulation

Lichtenheldt, Roy and Schäfer, Bernd and Krömer, Olaf and van Zoest, Tim (2014) Hammering beneath the surface of Mars - Forensic Engineering of failures in the HP3-Mole by applying multi-body dynamics simulation. In: 3rd Joint International Conference on Multibody Systems Dynamics (IMSD). 3rd Joint International Conference on Multibody System Dynamics, 30. Juni - 03. Juli 2014, Busan, Korea. ISBN 978-89-950027-7-3

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Official URL: http://imsd-acmd2014.ksme.or.kr/

Abstract

In order to gain further knowledge about the evolution of terrestrial planets in our inner solar system, NASA’s InSight Mission (Interior Exploration using Seismic Investigations, Geodesy and Heat Transfer) aims to investigate Mars’ subsurface. Therefore InSight’s HP3-Instrument (Heatflow and Physical Properties Package), developed by DLR, will measure the heat flux in Mars’ interior. In order to get the instruments down to a final depth of 5m the HP3-Mole is hammering itself below the martian surface deeper than any instrument before. To achieve this challenging goal the HP3-Mole works as a self impelling nail, driven by its inner hammering mechanism. As the achieved depths as well as the needed energy for "digging" strongly depend on the locomotion performance of the Mole, the hammering mechanism has been object to analysis and optimization using numerical multi-body models. While approaching the design limits of mass minimization and performance optimization, mechanical failure in the mechanisms drive train occurred in a later prototype of the system. Therefore the validated dynamic models originally developed to support the mission related design process are adapted and used to track the failure within the tight schedules of space missions. Using simulation-based failure tracking it was possible to identify the actual failure reason. The developed simulation-based forensic engineering approach will be explained using this example.

Item URL in elib:https://elib.dlr.de/89713/
Document Type:Conference or Workshop Item (Speech)
Title:Hammering beneath the surface of Mars - Forensic Engineering of failures in the HP3-Mole by applying multi-body dynamics simulation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lichtenheldt, RoyRoy.Lichtenheldt (at) dlr.deUNSPECIFIED
Schäfer, BerndBernd.Schaefer (at) DLR.deUNSPECIFIED
Krömer, Olafolaf.kroemer (at) dlr.deUNSPECIFIED
van Zoest, Timtim.zoest (at) dlr.deUNSPECIFIED
Date:30 July 2014
Journal or Publication Title:3rd Joint International Conference on Multibody Systems Dynamics (IMSD)
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Kim, Sung-SooChungnam National University
Choi, Jin HwanUNSPECIFIED
ISBN:978-89-950027-7-3
Status:Published
Keywords:Multibody dynamics forensic engineering Mehrkörper Dynamik Mole Penetrator Mars Planetary Exploration Terramechanics
Event Title:3rd Joint International Conference on Multibody System Dynamics
Event Location:Busan, Korea
Event Type:international Conference
Event Dates:30. Juni - 03. Juli 2014
Organizer:IMSD/KSME
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 - Projekt InSight
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Space System Dynamics
Deposited By: Lichtenheldt, Roy
Deposited On:14 Jul 2014 15:35
Last Modified:09 Aug 2016 13:09

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