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Thermal Balance Test of Solar Orbiter EUI Instrument Structural and Thermal Model with 13 Solar Constants
Jacques, Lionel; Halain, Jean-Philippe; Rossi, Laurence et al.
2015
 

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Keywords :
Space; Thermal; Test
Abstract :
[en] Developed by a European consortium led by the Centre Spatial de Liège in Belgium, the Extreme Ultraviolet Imager (EUI) is an instrument onboard the Solar Orbiter ESA M-class mission. At its 0.28AU perihelion, the spacecraft will be exposed to a 13 solar constants solar flux. EUI is protected behind the spacecraft heat shield but for three apertures for its telescopes looking at the Sun in the Extreme-UV. To better reject the unwanted visible light and protect 150nm thick EUV filters, Aluminum coated carbon-fiber-reinforced plastics entrance baffles are located at the front of the instrument. The residual absorbed heat by the entrance filters and baffles is evacuated through heat pipes to a dedicated spacecraft thermal interface. To verify its thermal design, the instrument structural and thermal model has been tested in a vacuum chamber with a solar simulator providing the 13 solar constants solar flux at the three entrance apertures and dedicated heaters to model the spacecraft heat shield feedthroughs. To assess the off-pointing performance of the entrance baffles, the instrument was mounted onto a rotating structure inside the chamber. The test setup, results and the thermal model correlation will be presented as well as the calibration of the solar simulator divergence and intensity.
Research center :
CSL - Centre Spatial de Liège - ULiège
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Jacques, Lionel  ;  Université de Liège > CSL (Centre Spatial de Liège)
Halain, Jean-Philippe ;  Université de Liège > CSL (Centre Spatial de Liège)
Rossi, Laurence ;  Université de Liège > CSL (Centre Spatial de Liège)
Hellin, Marie-Laure ;  Université de Liège > CSL (Centre Spatial de Liège)
Jamotton, Pierre ;  Université de Liège > CSL (Centre Spatial de Liège)
Liébecq, Sylvie ;  Université de Liège > CSL (Centre Spatial de Liège)
Mazzoli, Alexandra  ;  Université de Liège > CSL (Centre Spatial de Liège)
Renotte, Etienne ;  Université de Liège > CSL (Centre Spatial de Liège)
Rochus, Pierre  ;  Université de Liège > CSL (Centre Spatial de Liège)
Language :
English
Title :
Thermal Balance Test of Solar Orbiter EUI Instrument Structural and Thermal Model with 13 Solar Constants
Publication date :
26 March 2015
Event name :
Spacecraft Thermal Control Workshop
Event organizer :
The Aerospace Corporation
Event place :
El Segundo, United States
Event date :
from 24/03/2015 to 26/03/2015
Audience :
International
Name of the research project :
Solar Orbiter EUI
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Available on ORBi :
since 15 August 2015

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