Galileo Probe forebody thermal protection

Details Galileo Probe forebody thermal protection Galileo Probe forebody thermal protection

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981thph.confq....g&link_type=abstract

American Institute of Aeronautics and Astronautics, Thermophysics Conference, 16th, Palo Alto, CA, June 23-25, 1981, 16 p.

Physics

Ablative Materials, Atmospheric Entry, Atmospheric Models, Forebodies, Galileo Probe, Reentry Shielding, Jupiter Atmosphere, Shock Layers, Thermal Protection, Thermochemical Properties

Scientific paper

Material response solutions for the forebody heat shield on the candidate 310-kg Galileo Probe are presented. A charring material ablation analysis predicts thermochemical surface recession, insulation thickness, and total required heat shield mass. Benchmark shock layer solutions provide the imposed entry heating environments on the ablating surface. Heat shield sizing results are given for a nominal entry into modeled nominal and cool-heavy Jovian atmospheres, and for two heat-shield property models. The nominally designed heat shield requires a mass of at least 126 kg and would require an additional 13 kg to survive entry into the less probable cool-heavy atmosphere. The material-property model with a 30% surface reflectance reduces these mass requirements by as much as 16%.

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