Observation of an Ablating Surface in Expansion Tunnel Flow

Hydrocarbon-based ablators, such as carbon phenolic, have a complex role, as the resultant carbon-based compounds are both strong absorbers and emitters of radiation, thereby greatly altering the radiative heat flux to the vehicle. Thermal and chemical conditions in a shock layer can be highly noneq...

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Bibliographic Details
Published in:AIAA journal 2010-07, Vol.48 (7), p.1557-1560
Main Authors: D'Souza, Mary G, Eichmann, Troy N, Potter, Daniel F, Morgan, Richard G, McIntyre, Timothy J, Jacobs, Peter A, Mudford, Neil R
Format: Article
Language:English
Subjects:
Ablation
Aerodynamics
Aircraft
Applied sciences
Carbon
Dynamical systems
Dynamics
Ejection
Emitters
Enthalpy
Exact sciences and technology
Fluxes
Forming
Ground, air and sea transportation, marine construction
Heat
Heat flux
Heat transfer
Hydrocarbons
Hyperbolic reentry
Interactive
Joining
Miscellaneous transportation
Phonetics
Resultants
Shock layers
Thermal protection
Thermodynamics
Tunnels (transportation)
Turbulent flow
Vehicles
Wind tunnels
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Summary:Hydrocarbon-based ablators, such as carbon phenolic, have a complex role, as the resultant carbon-based compounds are both strong absorbers and emitters of radiation, thereby greatly altering the radiative heat flux to the vehicle. Thermal and chemical conditions in a shock layer can be highly nonequilibrium. As a result of the high temperatures encountered, chemical species dissociate, ionize, and recombine, often forming new species. At sufficient enthalpies, species reradiate significant heat fluxes in all directions, including to the body itself.
ISSN:0001-1452
1533-385X
DOI:10.2514/1.J050207