Flight Logs

AstroNav Nano stores mission data as CSV files.

Leaving USB mode

When using USB configuration mode:

1. Finish editing files.
2. Close applications that are using the drive.
3. Safely eject the AstroNav Nano drive.
4. Wait for the board to leave storage mode.

On Windows, use:

Safely Remove Hardware / Eject

Avoid disconnecting power while a write is active.

EXITUSB

The serial command:

EXITUSB

can also request that the board leave USB storage mode.

Retrieve a flight log

After a completed flight:

1. Confirm landing.
2. Follow your normal recovery procedure.
3. Remove power safely.
4. Disconnect hazardous loads.
5. Connect AstroNav Nano through USB.
6. Open the logs directory.
7. Copy the relevant CSV file.

Flight files use a format similar to:

Flight_XXXXXXXX.csv

Keep the original log unchanged.

Perform analysis on a copy.

Logged data

A flight log may contain:

• Sample counter
• Time in milliseconds
• Power mode
• Flight state
• Pyro state
• Acceleration
• Rotation
• Pressure
• Temperature
• Altitude
• Vertical velocity
• Roll
• Pitch
• Health bits

Reviewing a flight

Pay particular attention to state transitions:

Idle
↓
Boost
↓
Coast
↓
Pyro Fired
↓
Landed

Compare recorded flight behavior with independent mission information where possible.

Review any warnings or fault conditions before drawing conclusions from the data.