Characterization of the thermal conductivity for Advanced Toughened Uni-piece Fibrous InsulationsAdvanced Toughened Uni-piece Fibrous Insulations (TUFI) is discussed in terms of their thermal response to an arc-jet air stream. A modification of the existing Ames thermal conductivity program to predict the thermal response of these functionally gradient materials is described in the paper. The modified program was used to evaluate the effect of density, surface porosity, and density gradient through the TUFI materials on the thermal response of these insulations. Predictions using a finite-difference code and calculated thermal conductivity values from the modified program were compared with in-depth temperature measurements taken from TUFI insulations during short exposures to arc-jet hypersonic air streams.
Document ID
19930062505
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Stewart, David A. (NASA Ames Research Center Moffett Field, CA, United States)
Leiser, Daniel B. (NASA Ames Research Center Moffett Field, CA, United States)