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Measurement Setup to Determine Thermal Expansions from 100K to 300K of Ultra Stable Materials Used in Space Applications

Spannagel, Ruven and Schuldt, Thilo and Gohlke, Martin and Burow, Rick and Fitzsimons, Ewan and Johann, Ulrich and Weise, Dennis and Braxmaier, Claus (2014) Measurement Setup to Determine Thermal Expansions from 100K to 300K of Ultra Stable Materials Used in Space Applications. In: International Symposium on Optomechatronic Technologies. International Symposium on Optomechatronic Technologies, 05.-07.11.2014, Seattle, USA.

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In this article we present the status of our new setup to determine coefficients of thermal expansions (CTE) of ultra stable materials at temperatures from 300K down to 100 K. Such low CTE materials are important for dimensionally stable structures in space and terrestrial applications e.g. to enable precise measurements. This setup is an advancement of a measurement facility for CTE determination at room temperature with demonstrated measurements of CTE values down to 10 ppbK−1. Due to the high temperature differences of the new setup, the mechanical and thermal setup is very important. The mechanical transfer function between interferometer and the device under test (DUT) has to be high and the thermal transfer function has to be very low to achieve the required accuracy. An overview of the new setup and its subsystems is given in this article with a measurement of the sensitivity of the interferometer.

Item URL in elib:https://elib.dlr.de/94574/
Document Type:Conference or Workshop Item (Speech)
Title:Measurement Setup to Determine Thermal Expansions from 100K to 300K of Ultra Stable Materials Used in Space Applications
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Spannagel, RuvenDLR-RY, BremenUNSPECIFIED
Schuldt, ThiloDLR-RY, BremenUNSPECIFIED
Gohlke, MartinDLR-RY, BremenUNSPECIFIED
Fitzsimons, EwanAirbus Defence & Space, FriedrichshafenUNSPECIFIED
Johann, UlrichAstrium FriedrichshafenUNSPECIFIED
Weise, DennisAstrium GmbH–Satellites, 88039 Friedrichshafen, GermanyUNSPECIFIED
Braxmaier, Clausclaus.braxmaier (at) dlr.deUNSPECIFIED
Journal or Publication Title:International Symposium on Optomechatronic Technologies
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:Interferometer, optical instruments, measurements instruments, Thermal
Event Title:International Symposium on Optomechatronic Technologies
Event Location:Seattle, USA
Event Type:international Conference
Event Dates:05.-07.11.2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben GRACE Follow-On
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Systems Enabling Technologies
Deposited By: Hüls, Simone
Deposited On:13 Jan 2015 13:10
Last Modified:09 Feb 2017 19:21

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