Galileo probe forebody flowfield predictions during Jupiter entry

Details Galileo probe forebody flowfield predictions during Jupiter entry Galileo probe forebody flowfield predictions during Jupiter entry

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aiaa.conft....m&link_type=abstract

American Institute of Aeronautics and Astronautics and American Society of Mechanical Engineers, Joint Thermophysics, Fluids, Pl

Other

Aerothermodynamics, Atmospheric Entry, Flow Distribution, Forebodies, Galileo Probe, Heat Shielding, Jupiter Atmosphere, Ablation, Ablative Nose Cones, Eddy Viscosity, Radiant Heating, Reflectance, Shock Layers, Spallation, Thermodynamic Properties

Scientific paper

This paper presents forebody flowfield solutions for Jupiter entry conditions where the ablation injection rate is coupled with the surface heating rate. The calculations are made with a time-dependent viscous-shock-layer analysis where the flow is assumed to be in chemical equilibrium. The results obtained demonstrate how variations in various properties influence the calculations and how recent modifications in probe forebody heatshield design influence the heating and mass-loss conditions for Jupiter entry. The heatshield mass-loss rates are shown to decrease when the new radiative and thermodynamic property values are used as well as when the nose bluntness is reduced. Also, the inclusion of a finite surface reflectivity reduces the mass loss whereas spallation increases the mass loss by about 6 percent. Finally, the heating, mass-loss, and flowfield structure characteristics are described for a 335-kg probe as it enters the atmosphere of Jupiter.

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