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  • Tom Clatworthy

Variation in TID for LEO orbits




Total Ionising Dose (TID) exposure in LEO orbit comes from various sources (trapped protons, trapped electrons, solar protons, secondaries). The video below illustrates the TID levels received behind 5mm of Aluminium shielding as the orbital altitude rises (the mission duration and inclination have been fixed). Higher LEO missions become increasingly challenging, particularly if COTS parts are being used. 


Radiation analysis and assurance should be started as early in a project as possible for feasibility assessments and to help inform part / equipment selection.


Plots generated using OMERE (Trad software).

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