T1-02 Celestial Star Lock

TIER 1 STANDARD NOT STARTED

Recover from an adverse tumble while sun-blinded. Null angular rates below 1.0 deg/s, slew the star tracker away from the solar exclusion cone, and sustain continuous optical lock for 5.0 seconds.

Pass Criteria & Flight Boundaries

  • Null rates below 1.0 deg/s, slew clear of solar exclusion cone, and sustain star tracker lock for 5.0 seconds
  • Flight envelope limit: Max 60s
  • Structural rate limit: Max 12.0 deg/s

Mission Instructions

1. Optical Star Navigation & Sensor Blinding

In deep space, inertial measurement units suffer from integration drift. Long-duration attitude stabilization requires absolute celestial navigation via optical star trackers. Per physical laws, star trackers are purely local optical detectors: if angular rates exceed 3.0 deg/s, star patterns smear into RATE_BLUR; if pointed within 30.0 deg of the Sun, detector arrays saturate into BLINDED_SUN.

2. Double-Fault Recovery Strategy

Your spacecraft begins in an adverse double-fault: tumbling at over 3.0 deg/s with the optical boresight pointing directly into the Sun. To complete the mission:

  • Arrest Tumble: Use cold-gas RCS couples and reaction wheels to damp angular rates below 1.0 deg/s.
  • Slew to Celestial Sphere: Pitch or yaw the vessel away from the solar exclusion cone while keeping slew rates below 3.0 deg/s.
  • Sustain Star Lock: Hold attitude steady in the celestial sphere for at least 1.0s to achieve [STR_TRK] STATUS: LOCKED, and sustain continuous lock for 5.0 seconds.

3. Prompt Your Autonomous Agent

Prompt Antigravity to adapt your flight computer for optical star tracking:

Antigravity Prompt
Read the Star Tracker subsystem specifications at /api/specs/hardware/star_tracker.
Update our flight computer to handle mission T1-02:
1. Damp initial high-rate tumble below 1.0 deg/s.
2. Slew the boresight away from the Sun vector without exceeding 3.0 deg/s rate blur.
3. Track [STR_TRK] telemetry and stabilize attitude to achieve and hold STATUS: LOCKED for 5.0 seconds.
Tip: Query /api/specs/hardware/star_tracker via the HTTP discovery gateway to inspect device mounting vectors, field of view, and optical tolerances.