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Found 6 entries in the Bibliography.
Showing entries from 1 through 6
| 2015 |
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Efficiency and behavior of textured high emissivity metallic coatings at high temperature Three metallic coatings with textured surfaces, made of rhenium, tungsten and molybdenum, were studied in the frame of the Solar Probe Plus mission (NASA) as candidate materials. The role of these coatings is to dissipate a maximum of energy from a hot instrument facing the Sun, by the mean of their high total hemispherical emissivity. The total hemispherical emissivity of the three coatings was measured in the temperature range 1100-1900 K, as well as over time in order to study their high temperature stability. Various emi ... Brodu, E.; Balat-Pichelin, M.; Sans, J.; Freeman, M.; Kasper, J.; Published by: MATERIALS \& DESIGN Published on: 10/2015 YEAR: 2015 DOI: 10.1016/j.matdes.2015.05.073 |
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Evolution of the emissivity of tungsten at high temperature with and without proton bombardment The Solar Probe Plus mission (NASA) will be the first mission to enter the solar corona. The spacecraft will orbit the Sun at 8.5 solar radii from the Sun s surface at closest approach. Some metallic parts of the two on-board instruments, SWEAP (a Faraday cup) and FIELDS (antennas), will directly face the Sun, while the rest of the payload will be protected by a heat shield. For application to these instruments, a candidate refractory material, tungsten, was studied, confronting conditions similar to the ones expected close ... Brodu, E.; Balat-Pichelin, M.; Sans, J.; Kasper, J.; Published by: ACTA MATERIALIA Published on: 02/2015 YEAR: 2015 DOI: 10.1016/j.actamat.2014.10.050 |
| 2012 |
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The Solar Probe Plus (SP+) mission will approach the Sun as close as 9.5 solar radii in order to understand the origin of the solar corona heating and the acceleration of the solar wind. Submitted to such extreme environmental conditions, a thermal protection system is considered to protect the payload of the SP+ spacecraft. Carbon-based materials are good candidate to fulfill this role and critical point remains the equilibrium temperature reached at perihelion by the heat shield. In this paper, experimental results obta ... Balat-Pichelin, M.; Eck, J.; Sans, J.L.; Published by: Applied Surface Science Published on: 01/2012 YEAR: 2012 DOI: 10.1016/j.apsusc.2011.10.142 Carbon material; High temperature; Ion etching; Parker Data Used; Solar Probe Plus; Thermal radiative properties; VUV radiation |
| 2011 |
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Concentrated Solar Energy to Study High Temperature Materials for Space and Energy In this paper, the concentrated solar energy is used as a source of high temperatures to study the physical and chemical behaviors and intrinsic properties of refractory materials. The atmospheres surrounding the materials have to be simulated in experimental reactors to characterize the materials in real environments. Several application fields are concerned such as the aerospace and the energy fields: examples of results will be given for the heat shield of the Solar Probe Plus mission (NASA) for the SiC/SiC material that ... Charpentier, Ludovic; Dawi, Kamel; Eck, Julien; Pierrat, Baptiste; Sans, Jean-Louis; Balat-Pichelin, Marianne; Published by: JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME Published on: 08/2011 YEAR: 2011 DOI: 10.1115/1.4004241 |
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The aim of the Solar Probe Plus (SP+) mission is to understand how the solar corona is heated and how the solar wind is accelerated. To achieve these goals, in situ measurements are necessary and the spacecraft has to approach the Sun as close as 9.5 solar radii. This trajectory induces extreme environmental conditions such as high temperatures and intense Vacuum Ultraviolet radiation (VUV). To protect the measurement and communication instruments, a heat shield constituted of a carbon material is placed on the top of the ... Eck, J.; Sans, J.-L.; Balat-Pichelin, M.; Published by: Applied Surface Science Published on: 02/2011 YEAR: 2011 DOI: 10.1016/j.apsusc.2010.10.139 |
| 2010 |
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Combined effect of high temperature and VUV radiation on carbon-based materials For the next exploration of the sun, missions like Solar Probe+ (NASA) or Phoibos (ESA) will be launched to answer to fundamental questions on the solar corona heating and solar winds origin. Such solar probes missions that will pass very close to the sun, respectively at 9.5 and 4 solar radii (Rs), need thermal shield to protect the payload and the instrumentation. Carbon/carbon composites can withstand the severe environment encountered during the pass of the sun and have to be studied to understand their physico-chemical ... Eck, J.; Sans, J.L.; Balat-Pichelin, M.; Published by: ECS Transactions Published on: Carbon; Carbon carbon composites; Heat shielding; NASA; Probes; Space flight; Parker Engineering |
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