Advanced particulate fibrous composite for thermal control of re-entry vehiclesCombining the selectively reflective properties of particulate reflective coatings with the low density and high temperature capability of ceramic fibrous materials results in a novel composite material with useful optical properties. Numerical predictions of the radiative properties of zirconia and silica composites for a range of mixture fractions and wavelengths show the improvements attainable by dispersing spheres throughout a fiber matrix. The radiation conductance is controlled by the percentage of spheres in the composite. Results show that specific wavelength domains are controlled by either the spheres or the fibers, so the optical properties can be tailored for reentry applications.
Document ID
19930062564
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
White, Susan (NASA Ames Research Center Moffett Field, CA, United States)
Lee, Siu-Chun (NASA Ames Research Center Moffett Field, CA, United States)
Grzesik, Jan (Applied Sciences Lab., Inc. City of Industry, CA, United States)