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CryoSense: Sensor Validation Results in Liquid Nitrogen and Proposals for Upgrades of Measurement Technology

Gerstmann, Jens and Siegl, Martin and Fischerauer, A. and Kandlbinder, C. and Becker, D. and Schmidt, K. and Lindner, G. (2016) CryoSense: Sensor Validation Results in Liquid Nitrogen and Proposals for Upgrades of Measurement Technology. Project Report. RYTAS-CS-TN06, 60 S. (Unpublished)

Full text not available from this repository.

Abstract

This Technical Note presents the results of cryogenic sensor validation experiments in liquid nitrogen/liquid hydrogen and proposes upgrades to the measurement technologies. Electrical capacitance tomography and Ultrasound Tomography are for the first time introduced in cryogenic conditions. Functionality and performance for the detection of liquid levels and bubbles in liquid nitrogen (77K) are assessed. Sensor application and feed-through techniques are established. Fibre-optic temperature sensors are used to measure high resolution temperature profiles in the liquid and gas phase of nitrogen. The performance of three different fibre coatings is investigated and optimised. Finally, the sensor is used for vertical temperature profile measurements in the liquid and gas phase of hydrogen (20K). In the domain of fibre-optic technologies, fibre optic bundles used as image and light guides are tested in cryogenic conditions. They are operable in the cold gas phase above liquid nitrogen and, with suggested modifications, suitable for immersion in liquid nitrogen. Finally, upgrades to these measurement devices are proposed, with the goal of rendering them operable on microgravity platforms. Upgrades are also proposed for two further technologies (optical tomography based on optical fibres) and radio-frequency mass gauging.

Item URL in elib:https://elib.dlr.de/104981/
Document Type:Monograph (Project Report)
Title:CryoSense: Sensor Validation Results in Liquid Nitrogen and Proposals for Upgrades of Measurement Technology
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gerstmann, JensInstitute of Space Systems, DLR, Bremen, GermanyUNSPECIFIED
Siegl, MartinUNSPECIFIEDUNSPECIFIED
Fischerauer, A.UNSPECIFIEDUNSPECIFIED
Kandlbinder, C.UNSPECIFIEDUNSPECIFIED
Becker, D.UNSPECIFIEDUNSPECIFIED
Schmidt, K.UNSPECIFIEDUNSPECIFIED
Lindner, G.UNSPECIFIEDUNSPECIFIED
Date:9 February 2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:60
Status:Unpublished
Keywords:CryoSense, cryogenic, sensor Validation, liquid nitrogen
Institution:DLR Bremen
Department:RY-TAS
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Transport and Propulsion System
Deposited By: Behnke, Manuela
Deposited On:30 Jun 2016 12:54
Last Modified:02 Aug 2016 11:49

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