Logical Architecture: Commanded, OBC-Relayed Mode Change

[chgio]

Precursor: #4

Diagrams shared with #18:

• [LFBD] Root Logical Function Breakdown
• [LAB] Root Logical Architecture
• [LAB] Root Logical Architecture View of Mode Change

Unique diagrams:

• [ES] Commanded, OBC-Relayed Mode Change Scenario:
  • own subsystem failure (OBC down)
  • ground station operator telecommands mode change
  • mode change relay command is forwarded by Communications subsystem ("hey OBC, tell them to move!")
  • mode change command is not issued by OBC
  • mode change command is issued by Communications subsystem directly ("I'll do it myself -- hey you, move!")

Next steps: #19