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A Crushable Shell for Small Body Landers

Schröder, Silvio and Grimm, Christian and Witte, Lars (2018) A Crushable Shell for Small Body Landers. In: 2018 Deutscher Luft- und Raumfahrtkongress. DLRK 2018, 04.-06. Sep. 2018, Friedrichshafen.

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Abstract

This year the DLR built Mobil Asteroid Surface Scout (MASCOT) will decouple from the Hayabusa-2 spacecraft to perform surface science at the asteroid (162173) Ryugu. The MASCOT lander itself doesn’t need a special damping system for touchdown since the asteroid is relatively small (\O 900 m) and therefore the surface gravity respectively the landing velocity is very low (few cm/s). In a next step DLR is developing further nano lander technologies for larger celestial bodies with respective higher surface gravity and therefore higher impact velocities. Previous investigations have shown that for larger bodies the landing velocity is in the range of 4 m/s which produces high shock loads. A possible low complex and lightweight solution of damping the shocks is the use of a crushable shell around the lander. This crushable shell could be made out of aluminum honeycomb core with a High Performance Polyethylene cover sheet. The idea is to convert the kinetic energy into deformation work of the shell and reduce the shock load to the instrument platform. The design is particularly advantageous since no moving parts nor other mechanisms are required, thus making the system very robust and fail safe. This paper is concentrating on a hardware test campaign recently done at DLR’s Landing \& Mobility Test Facility (LAMA). It will show the design of the shell, the test setup and the results of the campaign.

Item URL in elib:https://elib.dlr.de/121939/
Document Type:Conference or Workshop Item (Speech)
Title:A Crushable Shell for Small Body Landers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schröder, SilvioSilvio.Schroeder (at) dlr.deUNSPECIFIED
Grimm, ChristianChristian.Grimm (at) dlr.deUNSPECIFIED
Witte, LarsLars.Witte (at) dlr.dehttps://orcid.org/0000-0002-3921-2524
Date:5 September 2018
Journal or Publication Title:2018 Deutscher Luft- und Raumfahrtkongress
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Nano lander, space exploration, crushable structure, Landing & Mobility Test Facility (LAMA), DLR
Event Title:DLRK 2018
Event Location:Friedrichshafen
Event Type:national Conference
Event Dates:04.-06. Sep. 2018
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 > Land and Exploration Technology
Deposited By: Schröder, Silvio
Deposited On:02 Oct 2018 12:22
Last Modified:31 Jul 2019 20:19

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