Table 4‑1: Stages of a project and radiation effects analyses performed
Phase |
Activity |
Pre-phase A |
Environment specification for each mission option; Preliminary assessment of sensitivities and availability of components |
A |
Environment specification for baseline mission and options where they are retained for consideration Preliminary assessment of sensitivities and availability of components |
B |
Environment specification update; Space radiation hardness assurance requirements including detailed analysis of component requirements and identification of availability of susceptibility data; Establishment and execution of component test plan |
C & D |
Accurate shielding and radiation effects analysis (including component-specific analysis)a Consolidation of test results; augmented testing |
E |
Investigation of radiation effects; consideration of radiation effects in anomaly investigation; feedback to engineering groups of lessons learned including e.g. radiation related anomalies. |
a If mission assumptions change in this phase, such as the proposed orbit, a complete re-evaluation of the radiation environment specification is performed. |