The solar probe shield/antenna materials characterization

Randolph, J. E.; Ayon, Juan A.; Dirling, R. B.; Imbriale, W.; Miyake, Robert N.; Quéau, D. Le; Olalde, G.; Pierson, E.; Rawal, Shristi; Rivoire, B.; Robert, Jean‐Francois; Royere, C.; Taylor, Robert P.; Valentine, Peter G.; Vaughn, Wallace L.

doi:10.1016/s0008-6223(99)00051-2

Cited by 14 publications

(5 citation statements)

References 4 publications

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“…It should be noticed that, for a precise assessment of the material potential in solar furnaces, the characterization of the spectral behavior must be done at the furnace operating temperature (that is expected to be lower than 1400 K: notice that the materials requirements for volumetric solar absorber are a resistance to temperatures of about 1300 K). 40 Since hightemperature reflectivity or emissivity measurements require the use of complex apparatuses and long measurement times, [41][42][43][44][45][46][47][48] a preliminary choice among the various materials to identify the most promising ones is absolutely mandatory, and this was the purpose of the present work. In fact, literature data on many different materials (metals, 49 semiconductors, 50 dielectrics 51 ) show that if the material does not undergo phase or surface changes, the spectral reflectivity or emissivity curve shapes do not dramatically change.…”

Section: Discussionmentioning

confidence: 99%

Spectrally selective ultra-high temperature ceramic absorbers for high-temperature solar plants

Sani¹,

Mercatelli²,

Sansoni³

et al. 2012

Journal of Renewable and Sustainable Energy

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Ultra-high temperature ceramics are the ideal materials for extreme conditions owing to their very high melting points and good thermo-mechanical properties at high temperatures. For these reasons, they are widely known as materials for aerospace applications. This paper presents a comparative spectral characterization of zirconium, hafnium, and tantalum carbides ultra-high temperature ceramics for concentrating solar power applications. Room-temperature reflectance spectra have been measured from the ultraviolet wavelength region to the mid-infrared band. Using these spectral properties, the ceramics were evaluated as sunlight absorbers in receivers for high-temperature thermodynamic solar plants. V

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Section: Discussionmentioning

confidence: 99%

Spectrally selective ultra-high temperature ceramic absorbers for high-temperature solar plants

Sani¹,

Mercatelli²,

Sansoni³

et al. 2012

Journal of Renewable and Sustainable Energy

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“…9-1, with the large thermal shield dominating the configuration. The shield is a section of a parabola of revolution (paraboloid) that has a dual function as a shield and as a high-gain antenna (HGA) [3]. The spacecraft trajectory is chosen so that near the Sun the nadir of the spacecraft always faces the Sun and the HGA always points toward Earth.…”

Section: Solar Probe Mission Descriptionmentioning

confidence: 99%

Miscellaneous Other Antennas

Imbriale¹,

Hoppe²

2006

Spaceborne Antennas for Planetary Exploration

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“…Although carbon nanotubes (CNTs) have become one of the most important nanoscale materials due to their technological importance in microelectronics, 1 carbon nanofibers (CNFs) with diameters of y100 nm have attracted considerable interest. Envisioned applications for CNFs range from field emission devices, 2 biosensors and bioprobes, 3 and optical antennas, 4 to filter media. 5 CNFs with different morphology and structure have been fabricated by several different methods: arc discharge, laser ablation, pyrolysis, and catalytic decomposition of hydrocarbons.…”

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confidence: 99%