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Thermocouple Positioning for the of the Non-Integer System Identification Approach to HIFiRE-5 Fins

Löhle, Stefan and Böhrk, Hannah and Fuchs, Ulf (2011) Thermocouple Positioning for the of the Non-Integer System Identification Approach to HIFiRE-5 Fins. 7th Symposium on Aerothermodynamics for Space Vehicles, 9-12 May 2011, Brügge, Belgien.

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The German Aerospace Center developed a ceramic fin experiment (FinEx) for HIFiRE flight 5 in order to test the performance of new structure designs during hypersonic flight. Aero-thermal analysis is provided by 8 thermocouple data channels for all four symmetrically arranged fins. In this paper the analysis of the geometry and thermophysical characteristics of the fins to optimize thermocouple positioning is discussed. The main goal is to gather as much information as possible from these few temperature sensors in these three dimensional structures. Not only is the absolute temperature value of interest but also the reason of the temperature rise. A thorough calculation of the temperature gradients in the fin structure is used to define an optimal positioning layout, where particular focus lies on the localization of the heat fluxes at the surface from the in-depth thermocouple measurement. In conclusion, two fins are equipped with 3 thermocouples each and two are equipped with only 1 thermocouple. The paper closes with some first results based on the calibration data of the fins and the nominal trajectory values.

Item URL in elib:https://elib.dlr.de/71041/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Thermocouple Positioning for the of the Non-Integer System Identification Approach to HIFiRE-5 Fins
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Löhle, StefanUniversität Stuttgart - IRSUNSPECIFIED
Fuchs, UlfUniversität Stuttgart - IRSUNSPECIFIED
Date:May 2011
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:NISI, HIFiRE, FinEx
Event Title:7th Symposium on Aerothermodynamics for Space Vehicles
Event Location:Brügge, Belgien
Event Type:international Conference
Event Dates:9-12 May 2011
Organizer:European Space Agency (ESA) Congrex
HGF - Research field:Aeronautics, Space and Transport, Aeronautics, Space and Transport
HGF - Program:Space, Space
HGF - Program Themes:Space Transportation, Space Transportation
DLR - Research area:Raumfahrt, Raumfahrt
DLR - Program:R RP - Space Transportation, R RP - Space Transportation
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Rückkehrtechnologie (old), R - Raumfahrzeugsysteme - Konzepte und Entwurf (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Space Structural Components
Deposited By: Böhrk, Hannah
Deposited On:19 Oct 2011 15:50
Last Modified:19 Oct 2011 15:50

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