1. The encyclopedia that outlived the empire
Isaac Asimov’s Foundation returns as the recalled work because its Encyclopedia Galactica project is designed to preserve knowledge and function through a long silence when the central authority cannot help. The desktop’s autonomy test has the same shape: can the platform keep its own records, make its own decisions, and remain ready for the day contact returns?
This entry defines the long-duration autonomy without ground contact test matrix.
2. Test setup
The test uses a flight-representative rack with multiple cells running operational software. Ground contact is simulated as a schedule of passes and blackouts. The platform must operate autonomously during blackouts. Faults and routine events are injected according to the matrix. Power, thermal, compute, storage, network, attitude, and service state are recorded continuously.
3. The test matrix
| Case | Scenario | Conditions | Expected outcome |
|---|---|---|---|
| 1 | Quiet orbit | Nominal load, one orbit without contact | Platform maintains power, thermal, attitude, and services; logs are preserved. |
| 2 | Eclipse season | Multiple eclipses during an outage | Battery management, thermal control, and load priorities remain stable. |
| 3 | Housekeeping during silence | Scheduled tasks arrive during blackout | Tasks execute, defer, or abort according to onboard policy without ground input. |
| 4 | Minor fault during outage | Single cell reboot or network partition during blackout | Local FDIR resolves the fault; services continue; ground is informed later. |
| 5 | Degraded cell persists | A cell remains in a warning state through the outage | Platform derates or isolates the cell according to health policy. |
| 6 | Buffer pressure | High-rate payloads fill storage during blackout | Oldest non-critical data is overwritten or compressed according to policy. |
| 7 | Thermal drift | A thermal setpoint becomes suboptimal during eclipse | Autonomous thermal management adjusts heaters, coolers, or load. |
| 8 | Extended outage | Multi-orbit blackout with several minor events | Platform remains stable, coherent, and contact-ready throughout. |
4. What is measured
For each case the test records:
- Whether the platform stayed within power, thermal, and attitude limits.
- Service availability and latency throughout the outage.
- Number and type of autonomous decisions made.
- Data integrity and log completeness.
- Whether contact was re-established cleanly.
- Whether ground could reconstruct the platform’s state from downlinked logs.
5. What this changes
- The long-duration autonomy test has a concrete matrix.
- The matrix links back to the power distribution, thermal management, network reconfiguration, storage healing, and health management arcs.
- The next entry will define pass and fail criteria.