Accession Number:

AD0420193

Title:

INVESTIGATION OF THE THERMAL PROPERTIES OF HIGH-TEMPERATURE INSULATION MATERIALS,

Descriptive Note:

Corporate Author:

LITTLE (ARTHUR D) INC CAMBRIDGE MASS

Personal Author(s):

Report Date:

1963-07-01

Pagination or Media Count:

17.0

Abstract:

This program encompasses an analytical and experimental investigation of the thermal properties of high temperature insulation materials. Effective thermal conductivities of graphite and zirconia fibers were measured in the temperature range of -320 to 200 F. The results were compared with empirical and theoretical models of heat transfer in fibrous insulations. Measurements of visible and infrared transmission through insulation materials indicated that scattering is the principal mechanism of radiation attenuation. Scattering and absorption cross sections estimated from the transmission data are given and show little effect of insulation temperature. The effective thermal conductivities of evacuated insulation systems were measured in the temperature range from 60 to 4000 F. The stability of materials exposed to high temperature vacuum environment for up to 170 hours was studied. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE