Heating analysis for a Lunar Transfer Vehicle at near-equilibrium flow conditions
作者： Peter A Gnoffo , Lin C Hartung , Robert B Greendyke
DOI: 10.2514/6.1993-270
关键词: Atmospheric sciences 、 Thermal radiation 、 Convective heat transfer 、 Mechanics 、 Radiant energy 、 Atmosphere 、 Angle of attack 、 Non-equilibrium thermodynamics 、 Physics 、 Radiative transfer 、 Convection
摘要: A heating analysis for a 15.2 m diameter Lunar Transfer Vehicle (LTV) at 0 and 10.6 deg angle of attack nominal trajectory through the earth's atmosphere is described. The utilizes Langley Aerothermodynamic Upwind Relaxation Algorithm (LAURA) with thin-layer, Navier-Stokes, thermochemical nonequilibrium options. Radiative levels are calculated using Optimized RAdiative Nonequilibrium (LORAN) Non-EQuilibrium AIr Radiation (NEQAIR) codes. At peak heating, shock layer substantially in equilibrium. Comprehensive spatial spectral grid convergence studies have been implemented to quantify effects on convective radiative levels. Axisymmetric tests including coupled energy transfer show negligible change 20 percent reduction heating.
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