Material Properties DatabaseTUFI/AETB-8 Diffusion Layer
Property: Emissivity
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Name: TUFI/AETB-8 Diffusion Layer
Database: NASA Ames Thermal Protection Materials
Category: Silicon-Based Reusable Composites: Rigid Ceramic Tiles
Composition: 2.5% SiB4, 77.5% (5.75% B2O3, 94.25% SiO2), 20% MoSi2
Manufacturer: Boeing, United Space Alliance (USA)
Technical Readiness Level: 8
Last Modified: 2001-10-01
Description:
- The TUFI/AETB-8 diffusion layer is the layer material with variable density just below the TUFI external surface that occurs in AETB-8. It has been proposed in many other areas prone to damage, but is not currently being used due to the thermal conductivity of the substrate and the cost of redesign and installation.
Point of Contact:
- Daniel Leiser
- NASA Ames Research Center
- dleiser@mail.arc.nasa.gov
Emissivity
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| Value (-) | Pressure (psf) | Temperature (R) | Uncertainty | Uncertainty Source |
|---|---|---|---|---|
| 8.73e-01 | N/A | 540.0 | 4.36e-02 | Significant digits reported |
| 8.73e-01 | N/A | 630.0 | 4.37e-02 | Significant digits reported |
| 8.75e-01 | N/A | 720.0 | 4.38e-02 | Significant digits reported |
| 8.78e-01 | N/A | 810.0 | 4.39e-02 | Significant digits reported |
| 8.81e-01 | N/A | 900.0 | 4.41e-02 | Significant digits reported |
| 8.85e-01 | N/A | 990.0 | 4.42e-02 | Significant digits reported |
| 8.88e-01 | N/A | 1080.0 | 4.44e-02 | Significant digits reported |
| 8.92e-01 | N/A | 1170.0 | 4.46e-02 | Significant digits reported |
| 8.95e-01 | N/A | 1260.0 | 4.48e-02 | Significant digits reported |
| 8.98e-01 | N/A | 1350.0 | 4.49e-02 | Significant digits reported |
| 9.01e-01 | N/A | 1440.0 | 4.51e-02 | Significant digits reported |
| 9.05e-01 | N/A | 1530.0 | 4.52e-02 | Significant digits reported |
| 9.07e-01 | N/A | 1620.0 | 4.54e-02 | Significant digits reported |
| 9.10e-01 | N/A | 1710.0 | 4.55e-02 | Significant digits reported |
| 9.13e-01 | N/A | 1800.0 | 4.57e-02 | Significant digits reported |
| 9.16e-01 | N/A | 1890.0 | 4.58e-02 | Significant digits reported |
| 9.18e-01 | N/A | 1980.0 | 4.59e-02 | Significant digits reported |
| 9.21e-01 | N/A | 2070.0 | 4.60e-02 | Significant digits reported |
| 9.23e-01 | N/A | 2160.0 | 4.61e-02 | Significant digits reported |
| 9.25e-01 | N/A | 2250.0 | 4.62e-02 | Significant digits reported |
| 9.27e-01 | N/A | 2340.0 | 4.63e-02 | Significant digits reported |
| 9.29e-01 | N/A | 2430.0 | 4.64e-02 | Significant digits reported |
| 9.31e-01 | N/A | 2520.0 | 4.65e-02 | Significant digits reported |
| 9.32e-01 | N/A | 2610.0 | 4.66e-02 | Significant digits reported |
| 9.34e-01 | N/A | 2700.0 | 4.67e-02 | Significant digits reported |
| 9.36e-01 | N/A | 2790.0 | 4.68e-02 | Significant digits reported |
| 9.37e-01 | N/A | 2880.0 | 4.68e-02 | Significant digits reported |
| 9.38e-01 | N/A | 2970.0 | 4.69e-02 | Significant digits reported |
| 9.40e-01 | N/A | 3060.0 | 4.70e-02 | Significant digits reported |
| 9.41e-01 | N/A | 3150.0 | 4.70e-02 | Significant digits reported |
| 9.42e-01 | N/A | 3240.0 | 4.71e-02 | Significant digits reported |
| 9.43e-01 | N/A | 3330.0 | 4.71e-02 | Significant digits reported |
| 9.44e-01 | N/A | 3420.0 | 4.72e-02 | Significant digits reported |
| 9.45e-01 | N/A | 3510.0 | 4.72e-02 | Significant digits reported |
| 9.45e-01 | N/A | 3600.0 | 4.73e-02 | Significant digits reported |