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Launch lock system for reaction wheels

Berlin, M. and Goossens, Nils and Oelze, Holger W. and Braxmaier, Claus (2021) Launch lock system for reaction wheels. CEAS Space Journal. Springer. doi: 10.1007/s12567-021-00353-9. ISSN 1868-2502.

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Abstract

Launch loads are critical forces to the payload. Many structures are not designed to survive these loads, thus, additional systems which absorb them are required. These launch lock mechanisms are available in different varieties. For a future magnetic bearing reaction wheel, two different principles of launch lock mechanism concepts were developed and tested. The first one is based on a spring mechanism, while the second uses electromagnetism to move the locking pins. A first testing with prototypes of both was conducted to evaluate the functionality. Subsequently improvements regarding reducing the mass and construction volume were incorporated in the design. In the course of this, additive manufacturing with PLA filament has been used to study possible applications for these mechanisms. The spring concept resulted to be more reliable than the electromagnetic one, but requires a damping mechanism. A usage of additive manufactured PLA components is a promising possibility for the production.

Item URL in elib:https://elib.dlr.de/141092/
Document Type:Article
Title:Launch lock system for reaction wheels
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Berlin, M.TU Braunschweig, Brunswick, GermanyUNSPECIFIED
Goossens, NilsCenter of Applied Spacetechnology and Mikrogravity (ZARM), University Bremen, Bremen, GermanyUNSPECIFIED
Oelze, Holger W.Center of Applied Spacetechnology and Mikrogravity (ZARM), University Bremen, Bremen, GermanyUNSPECIFIED
Braxmaier, Clausclaus.braxmaier (at) dlr.deUNSPECIFIED
Date:18 February 2021
Journal or Publication Title:CEAS Space Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1007/s12567-021-00353-9
Publisher:Springer
ISSN:1868-2502
Status:Published
Keywords:Additive manufacturing Reaction wheels Launch loads Launch lock Shape memory alloy Bimetal
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Systemtechnologien (old)
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Systems Enabling Technologies
Institute of Quantum Technologies > Quantum Metrology
Deposited By: Hamann, Ines
Deposited On:04 Mar 2021 10:43
Last Modified:06 Mar 2021 17:15

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