6 tools
Radiation
Total Dose (TID)
Mission dose behind Al shielding by orbit, radiation design margin, part-class verdict.
Radiation
Single Event Upsets
Upsets per day from memory size and orbit class, MTBU and EDAC scrubbing check.
Environment
Atomic Oxygen
Ram fluence vs altitude and erosion depth of kapton, silver, teflon over the mission.
Environment
Debris & Meteoroids
Poisson impact probability per particle size class from area, years and altitude.
Reliability
Reliability & Redundancy
Series chain with MTBF and hot/cold/2-of-3 schemes — system R(t) and weakest link.
Reference
Environments & Part Classes
Belts & SAA, typical doses by orbit, part radiation classes, solar cycle, standards.