28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

Recent NASA/GSFC Cryogenic Measurements of the Total Hemispheric Emissivity of Black Surface Preparations

30 Jun 2015, 09:00
2h
Exhibit Hall (Arizona Ballroom) ()

Exhibit Hall (Arizona Ballroom)

Poster Presentation ICMC-14 - Cryogenic Materials Testing and Methods M2PoB - Cryogenic Materials III: Testing and Methods

Speaker

James Tuttle (NASA/GSFC)

Description

High-emissivity (black) surfaces are commonly used on deep-space radiators and thermal radiation absorbers in test chambers. Since 2011 NASA Goddard Space Flight Center has been measuring the total hemispheric emissivity of such surfaces from room temperature down to 20 Kelvin using a test apparatus that fits inside a small laboratory cryostat. We report the latest data from these measurements, including Chemglaze Z307 paint, Black KaptonTM, and a configuration of painted aluminum honeycomb that was not previously tested. We also present the results of studies of batch-to-batch reproducibility in Ball Infrared BlackTM and painted aluminum honeycomb. This work was performed to support the development and testing of the James Webb Space Telescope.

Primary author

James Tuttle (NASA/GSFC)

Co-authors

Edgar Canavan (NASA–Goddard Space Flight Center) Michael DiPirro (NASA/Goddard Space Flight Center) Xiaoyi Li (NASA/GSFC)

Presentation Materials