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Rapid Laboratory Investigation of the Thermal Properties of Planetary Analogues by Using the Extase Thermal Probe

Nadalini, R. and EXTASE Team, (2004) Rapid Laboratory Investigation of the Thermal Properties of Planetary Analogues by Using the Extase Thermal Probe. 35th COSPAR Meeting, Paris, France, 18 - 25 July 2004.

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Abstract

The thermal properties of the constituent materials of the upper meters of planets and planetary bodies are of extreme interest. During the design and the verification of various planetary missions, the need to model and test appropriate simulants in laboratory is often raised. To verify the thermal properties of deployed laboratory simulants, the EXTASE thermal probe is a fast, precise, and easy-to-use tool. EXTASE is a thermal profile probe, able to measure the temperature and inject heat into the selected material at 16 different locations along its 45cm long slender cylindrical body. It has been developed following the experience of MUPUS, with the purpose of observing such properties on Earth, in situ and in a short time. We have used EXTASE, under laboratory cold and standard conditions, on several sand mixtures, soils, granular and compact ices, under vacuum and at normal pressure levels, to collect a great number of time- and depth-dependent temperature curves that represent the thermal dynamical response of the material. At the same time, two independent models have been developed to verify the experimental results by reaching the same results with a simulation of the same process. The models, analytical and numerical, which account for all material parameters (conductivity, density, capacity), have been developed and fine tuned until their results are superposed to the experimental curves, thus allowing the determination of the distinct thermal properties. In addition, a test campaign is under planning to use EXTASE to determine, rapidly and efficiently, the thermal properties of various regolith simulants to be used in the simulation of planetary subsurface processes.

Item URL in elib:https://elib.dlr.de/11105/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Rapid Laboratory Investigation of the Thermal Properties of Planetary Analogues by Using the Extase Thermal Probe
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Nadalini, R.UNSPECIFIEDUNSPECIFIED
EXTASE Team, UNSPECIFIEDUNSPECIFIED
Date:2004
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Event Title:35th COSPAR Meeting, Paris, France, 18 - 25 July 2004
Organizer:Comitee on Space Research (COSPAR)
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Pieth, Susanne
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 16:50

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