Space Systems Working Group
FireSAT: Model vs Documents Alone
Provide an example of Model Based Systems Engineering applied to a Space System
FireSat Example (From Space Mission Analysis and Design (SMAD), Third Edition, by Wiley J. Larson and James R. Wertz (editors).)
- Realistic and sharable
- A mission to detect identify and monitor forest fires from orbit
- Widely regarded as definitive text on space systems for concept/feasibility studies
- Examples are sufficiently detailed to create models
FireSAT Text as System Design Documents and Descriptions
- FireSAT text resembles documented system design (requirements, functions, interfaces, analysis and trades)
- Presentation of information is organized similar to how silos form
- Works fine for a text book
- Naturally illuminates the areas integrated modeling is intended to address
Types of Document-based Information in FireSAT
|
System Documents |
FireSAT Example |
|
Concept of Operations |
Mission Objective, system requirements |
|
Requirements (SRDs, FRDs etc) |
system requirements |
|
Interfaces (ICDs etc) |
Data flow diagram, system requirements |
|
Functional Designs |
Power functional decomposition |
|
Architecture |
Mission Objective |
|
Analysis-specific engineering reports (trades, reliability etc) |
Solar Array selection |
|
End-to-end Information systems spec |
Data flow diagram |
