Solar simulation test up to 13 solar constants for the thermal balance of the Solar Orbiter EUI instrument

Laurence Rossi; Maria Zhukova; Lionel Jacques; Jean-Philippe Halain; Marie-Laure Hellin; Pierre Jamotton; Etienne Renotte; Pierre Rochus; Sylvie Liebecq; Alexandra Mazzoli

doi:10.1117/12.2055125

24 July 2014 Solar simulation test up to 13 solar constants for the thermal balance of the Solar Orbiter EUI instrument

Laurence Rossi, Maria Zhukova, Lionel Jacques, Jean-Philippe Halain, Marie-Laure Hellin, Pierre Jamotton, Etienne Renotte, Pierre Rochus, Sylvie Liebecq, Alexandra Mazzoli

Author Affiliations +

Proceedings Volume 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray; 91443H (2014) https://doi.org/10.1117/12.2055125
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

Solar Orbiter EUI instrument was submitted to a high solar flux to correlate the thermal model of the instrument. EUI, the Extreme Ultraviolet Imager, is developed by a European consortium led by the Centre Spatial de Liège for the Solar Orbiter ESA M-class mission. The solar flux that it shall have to withstand will be as high as 13 solar constants when the spacecraft reaches its 0.28AU perihelion. It is essential to verify the thermal design of the instrument, especially the heat evacuation property and to assess the thermo-mechanical behavior of the instrument when submitted to high thermal load. Therefore, a thermal balance test under 13 solar constants was performed on the first model of EUI, the Structural and Thermal Model. The optical analyses and experiments performed to characterize accurately the thermal and divergence parameters of the flux are presented; the set-up of the test, and the correlation with the thermal model performed to deduce the unknown thermal parameters of the instrument and assess its temperature profile under real flight conditions are also presented.

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Laurence Rossi, Maria Zhukova, Lionel Jacques, Jean-Philippe Halain, Marie-Laure Hellin, Pierre Jamotton, Etienne Renotte, Pierre Rochus, Sylvie Liebecq, and Alexandra Mazzoli "Solar simulation test up to 13 solar constants for the thermal balance of the Solar Orbiter EUI instrument", Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91443H (24 July 2014); https://doi.org/10.1117/12.2055125

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KEYWORDS

Lamps

Thermal modeling

Mirrors

Sensors

Interfaces

Device simulation

Space operations

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