1. When the scenario board is the mission
Tom Clancy’s The Hunt for Red October returns as the recalled work because much of the novel’s tension comes from running scenarios: what the submarine will do, what the trackers believe it will do, and what happens when those beliefs diverge. The end-to-end mission simulation is the desktop’s scenario board. It does not predict the future, but it prepares the platform for futures that are plausible.
This entry defines the end-to-end mission simulation matrix for the desktop.
2. Simulation setup
The test uses a high-fidelity software simulation of the desktop and its environment. The platform model includes real or representative flight software, power and thermal models, communications scheduling, and fault injection. The environment model includes orbit propagation, eclipse and season cycles, radiation dose accumulation, and ground-station visibility.
3. The scenario matrix
| Case | Scenario | Stressors | Expected outcome |
|---|---|---|---|
| 1 | Nominal one-year mission | Standard orbit, moderate load, scheduled contacts | Platform maintains all services; margins remain positive. |
| 2 | High-utilization mission | Continuous peak compute and storage load | Power and thermal budgets remain within limits; services degrade gracefully if limits are approached. |
| 3 | Long-eclipse season | Extended eclipses and cold-soak conditions | Battery depth-of-discharge remains safe; heaters and thermal control keep cells within limits. |
| 4 | High-drag orbit | Lower altitude, increased station-keeping | Propulsion or drag-makeup budget is tracked; orbit maintenance does not consume the mission. |
| 5 | Cell loss early in mission | One cell fails or is retired in month two | Remaining cells absorb workload; federation reconfigures; service continues. |
| 6 | Ground-link degradation | Reduced contact windows and dropouts | Autonomous operations continue; data queues safely; recovery is clean. |
| 7 | Software update campaign | Multiple updates across the mission timeline | Updates apply safely; rollback works; federation stays compatible. |
| 8 | Combined degraded mission | Several of the above at once | Platform survives; critical functions continue; retirement decision is informed by data. |
4. What is measured
For each scenario the simulation records:
- Power generation, storage state, and depth-of-discharge over time.
- Thermal states and heater duty cycles.
- Compute and storage utilization and performance.
- Communications contact efficiency and data latency.
- Fault events, autonomous responses, and recovery times.
- Propulsion or orbit-maintenance budget consumption, if applicable.
- End-of-life state and any residual capability.
5. What this changes
- The end-to-end mission simulation has a concrete scenario matrix.
- The matrix links back to the power, thermal, storage, network, self-maintenance, and platform-splitting arcs.
- The next entry will define pass and fail criteria.