Title :
AZW-LA-II white paint on swift BAT and XRT radiators: first time this paint is flown on an operational spacecraft
Author :
Choi, Michael K.
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt, MD, USA
Abstract :
To minimise the effect of albedo flux and heat flux on the radiators, the AZW-LA-II white paint is used as thermal coating for the swift BAT and XRT radiators in spacecraft. The thermal coatings committee at GFSC recommends the following thermo-optical properties for this coating in the swift mission, when it is not exposed to direct solar radiation. The solar absorptance is 0.08 and hemispherical emittance is 0.91 at beginning of life (BOF). The solar absorptance is 0.12 and hemispherical emittance is 0.90 at the end of life (EOF). After the application of AZW-LA-II white paint on the radiators, these radiators has undergone thermal vacuum cycle test and was found that the paint is in good shape.
Keywords :
paints; solar radiation; space vehicles; telescopes; thermal analysis; thermal barrier coatings; AZW-LA-II white paint; X-Ray telescope radiators; albedo flux; heat flux; operational spacecraft; swift burst alert telescope radiators; thermal coating; thermal vacuum cycle test; Adhesives; Charge coupled devices; NASA; Paints; Ribs; Silver; Space vehicles; Telescopes; Temperature; Thermoelectricity;
Conference_Titel :
Energy Conversion Engineering Conference, 2002. IECEC '02. 2002 37th Intersociety
Print_ISBN :
0-7803-7296-4
DOI :
10.1109/IECEC.2002.1392049
