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Development and testing of a pyro-driven launcher for harpoon-based comet sample acquisition

Völk, Stefan and Ulamec, Stephan and Biele, Jens and Hecht, Matthias and Fleischmann, Josef and Althapp, Sebastian and Lell, Peter and Nuth, Joseph A. and Wegel, Donald C. and Smith, Walter S. and Purves, Lloyd R. (2017) Development and testing of a pyro-driven launcher for harpoon-based comet sample acquisition. 68th International Astronautical Congress, 25. - 29. September 2017, Adelaide, Australien.

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Abstract

The CORSAIR (COmet Rendezvous, Sample Acquisition, Investigation, and Return) mission is a study for the fourth NASA New Frontiers program. It belongs to the Comet Surface Sample Return mission theme which focuses on acquiring and returning to Earth a macroscopic sample from the surface of a comet nucleus. CORSAIR uses a harpoon-based Sample Acquisition System (SAS) with the space- craft hovering several meters above the comet surface. This stand-off strategy overcomes disadvantages of systems using drills or shovels. Since comets are low gravity objects, these techniques would require anchoring before sampling which is not necessary here. Moreover, the harpoon-based system allows for acquiring several samples from different locations on the comet maximizing scientific output of the mission. Each SAS assembly consists of a pyro-driven Launcher, a Sample Acquisition and Retrieval Projectile (SARP) and a retraction system using a deployable composite boom structure. In order to collect enough cometary material, the Launcher has to provide the required kinetic energy to the SARP. Due to high energy densities, pyrotechnically actuated devices ultimately reduce the overall system mass and dimensions. Here, an overview of the development, design and testing of the Launcher is given. Furthermore, the Launcher theory is introduced explaining the entire reaction chain: initiation → gas dynamics → SARP motion.

Item URL in elib:https://elib.dlr.de/115934/
Document Type:Conference or Workshop Item (Speech)
Title:Development and testing of a pyro-driven launcher for harpoon-based comet sample acquisition
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Völk, StefanDLR-Oberpfaffenhofen, stefan.voelk (at) dlr.deUNSPECIFIED
Ulamec, StephanStephan.Ulamec (at) dlr.deUNSPECIFIED
Biele, JensJens.Biele (at) dlr.deUNSPECIFIED
Hecht, MatthiasMatthias.Hecht (at) dlr.deUNSPECIFIED
Fleischmann, JosefDLR-OberpfaffenhofenUNSPECIFIED
Althapp, SebastianDLR-OberpfaffenhofenUNSPECIFIED
Lell, PeterPyroGLobeUNSPECIFIED
Nuth, Joseph A.NASA-GSFCUNSPECIFIED
Wegel, Donald C.NASA-GSFCUNSPECIFIED
Smith, Walter S.NASA-GSFCUNSPECIFIED
Purves, Lloyd R.NASA-GSFCUNSPECIFIED
Date:25 September 2017
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Small Bodies Missions, Space Exploration
Event Title:68th International Astronautical Congress
Event Location:Adelaide, Australien
Event Type:international Conference
Event Dates:25. - 29. September 2017
Organizer:IAC
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):Vorhaben asteroids and comets
Location: Köln-Porz , Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Mobile Rocket Base
Space Operations and Astronaut Training > User center for space experiments (MUSC)
Deposited By: Herrmann, Astrid
Deposited On:24 Nov 2017 11:20
Last Modified:24 Nov 2017 11:20

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