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Size Matters - The Shell Lander Concept for Exploring Medium-Size Airless Bodies

Grimm, Christian and Schröder, Silvio and Witte, Lars and Wickhusen, Kai (2018) Size Matters - The Shell Lander Concept for Exploring Medium-Size Airless Bodies. In: 69th International Astronautical Congress 2018, IAC 2018. 69th International Astronautical Congress (IAC), 1-5 October 2018., Bremen, Germany.

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Once addressed as a side topic in planetary exploration, the investigation of small solar system bodies has now become one of the corner stones in the international science community in order to study the formation of the solar system and the evolution of life within. For rendezvous spacecraft, small carry-on landers have proven to be valuable assets, and to have a positive impact on the overall mission cost, by avoiding additional complexity of the main satellite and transferring the risk of close surface maneuvers entirely or at least to some extend to an independent deployable system. However, carry-on landers have been designed currently to land on very small bodies only, but medium-size class objects between diameters of 10 - 50 km are of great interest as well. In this paper we classify carry-on landers with respect to their touchdown and operational strategy, evaluate the constraints of ballistic deployments for different target bodies as well as identify the niche for using simple honeycomb impact dampers compared to optional retro-propulsion systems. Further we introduce the system design of a guided Shell Lander using a generic instrument carrier attached to a single ejectable crash-pad with stabilizing capability to protect the instrument carrier from structural damage, limit internal shock loads for sensitive payloads as well as reduce the amount of bounces on the surface. Finally, we present a mission architecture for a reference case to the Martian moon Phobos as well as provide a proof of concept based on laboratory impact tests.

Item URL in elib:https://elib.dlr.de/122161/
Document Type:Conference or Workshop Item (Speech)
Title:Size Matters - The Shell Lander Concept for Exploring Medium-Size Airless Bodies
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Grimm, Christianchristian.grimm (at) dlr.dehttps://orcid.org/0000-0003-4490-7424
Schröder, SilvioSilvio.Schroeder (at) dlr.deUNSPECIFIED
Witte, LarsLars.Witte (at) dlr.dehttps://orcid.org/0000-0002-3921-2524
Wickhusen, Kaikai.wickhusen (at) dlr.deUNSPECIFIED
Date:1 October 2018
Journal or Publication Title:69th International Astronautical Congress 2018, IAC 2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Asteroid Landing, Payload Delivery, Impact Energy Absorption, Shell Lander, Ejectable Crash-Pad
Event Title:69th International Astronautical Congress (IAC)
Event Location:Bremen, Germany
Event Type:international Conference
Event Dates:1-5 October 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: Grimm, Christian
Deposited On:13 Oct 2018 12:42
Last Modified:31 Jul 2019 20:20

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