Preliminary reentry safety assessment of the General Purpose Heat Source module for the Cassini mission: Aerospace Nuclear Safety Program

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Aerospace Safety, Atmospheric Entry, Cassini Mission, Radioisotope Batteries, Reactor Safety, Space Power Reactors, Thermoelectric Generators, Ablation, Aerodynamic Heating, Burnthrough (Failure), Radiant Heating, Reentry Effects, Reentry Trajectories, Thermal Analysis

Scientific paper

As asked by the U.S. Department of Energy/Office of Special Applications, and in support of the Environmental Impact Statement for the Cassini mission, The Johns Hopkins University/Applied Physics Laboratory (JHU/APL) has conducted preliminary one dimensional ablation and thermal analyses of the General Purpose Heat Source (GPHS). The predicted earth entry conditions provided by the Jet Propulsion Laboratory (JPL) for a Cassini Venus - Venus - Earth - Jupiter gravity assist (VVEJGA) trajectory were used as initial conditions. The results of this study, which constitute the initial reentry analysis assessment leading to the Cassini Updated Safety Analysis Report (USAR), are discussed in this document.

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