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Basic Governing Equations for the Flight Regimes of Aeroassisted Orbital Transfer VehiclesThe basic governing equations for the low-density, high-enthalpy flow regimes expected in the shock layers over the heat shields of the proposed aeroassisted orbital transfer vehicles are derived by combining and extending existing theories. The conservation equations are derived from gas kinetic principles for a four-component ionized gas consisting of neutral molecules, neutral atoms, singly ionized ions, and electrons, assuming a continuum flow. The differences among translational-rotational, vibrational, and electron temperatures are accounted for, as well as chemical nonequilibrium and electric-charge separation. Expressions for convective and viscous fluxes, transport properties, and the terms representing interactions among various energy modes are explicitly given. The expressions for the rate of electron-vibration energy transfer, which violates the Landau-Teller conditions, are derived by solving the system of master equations accounting for the multiple-level transitions.
Document ID
19990066622
Acquisition Source
Ames Research Center
Document Type
Reprint (Version printed in journal)
Authors
Lee, Jong-Hun
(NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1985
Publication Information
Publication: Progress in Astronautics and Aeronautics: Thermal Design of Aeroassisted Orbital Transfer Vehicles
Volume: 96
Subject Category
Thermodynamics And Statistical Physics
Report/Patent Number
AIAA Paper 84-1729
Meeting Information
Meeting: Thermophysics
Location: Snowmass, CO
Country: United States
Start Date: June 25, 1984
End Date: June 28, 1984
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Other

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