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  • 1
    facet.materialart.
    Unknown
    Thermal response of integral multicomponent composites to a high-energy aerothermodynamic heating environment with surface temperature to 1800 K (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Laminated composite insulations developed for potential use on advanced spacecraft operating between GEO and LEO were tested in an aerothermodynamic environment simulating an AOTV aerobraking maneuver (altitude 82.3 km and velocity = 9.0 km/s). Comparisons are discussed between these data and predictions of in-depth temperature response using dynamical thermal conductivity values to 2000 K.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: Ceramic Engineering and Science Proceedings (ISSN 0196-6219); 8; 613-625
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Unknown
    Effect of surface catalysis on heating to ceramic coated thermal protection systems for transatmospheric vehicles (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: This paper describes the effect of surface catalysis on the heat transfer rate to the heat shield of a typical Transatmospheric Vehicle (TAV) during ascent and atmospheric entry. Surface kinetics and optical properties obtained from arc-jet tests on candidate thermal protection systems (coated metals) were used in a reacting boundary layer code to estimate the heating distribution along the surface of a TAV. Thermochemical stability of the coatings is described in terms of reduction in emittance and loss of opacifiers from the coatings during the arc-jet tests.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: AIAA PAPER 88-2706
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Convective heat-transfer rate distributions over a 140 deg blunt cone at hypersonic speeds in different gas environments (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Experiments were conducted in air, CO2, and CO2-argon gas mixtures to obtain heating distribution data over a 140 deg blunt cone with various corner radii. The effect of corner radius on the heating distribution over the forebody of the cone was included in the investigation. These experiments provide data for validation of two-dimensional axisymmetric and three-dimensional Navier-Stokes solutions. Heating distribution data and measured bow shock wave stand-off distances for 0 deg angle of attack were compared with predicted values using a two-dimensional axisymmetric Navier-Stokes code.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: AIAA PAPER 93-2787 , AIAA, Thermophysics Conference; Jul 06, 1993 - Jul 09, 1993; Orlando, FL; United States|; 16 p.
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Characterization of the thermal conductivity for Advanced Toughened Uni-piece Fibrous Insulations (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Advanced 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.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: AIAA PAPER 93-2755 , ; 19 p.|AIAA, Thermophysics Conference; Jul 06, 1993 - Jul 09, 1993; Orlando, FL; United States
    Format: text
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    NASA TECHNICAL REPORTS
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