Task 151: EP04 On-Screen Data Extraction

Status: DONE

Motivation

Extending video frame analysis to EP04.

EP04 covers Titania → Earth return, with 65% thrust limitation, plasmoid encounter

(480 mSv), and security fleet pursuit. On-screen displays may reveal navigation

parameters for this return journey.

Key Findings

TRAJECTORY PREDICTION — Plasmoid Zone Parameters (02:38-02:45)

The most scientifically detailed display in EP04, showing real-time environmental monitoring:

Orbital Trajectory

• Periapsis Altitude: 6.50 RU
• Intercept Velocity: 18.3 km/s
• Vector: 2.1° INC / AZM 110.8°
• U3-Titania Approach: T+9h
• Advisory Index: CRITICAL

Plasmoid Zone (Estimated)

• Magnetic Field: 180-340 nT
• Plasma Density: 0.8-2.3 cm⁻³
• Core Temperature: 2.1×10⁶ K
• Traverse Time: 00:08:00

Shield & Operational Constraints

• Shield Capacity: 63% (12H TO CRITICAL)
• Shield Remaining Lifetime: 14 min
• Margin: 6 min (14 min life − 8 min traverse)
• Burns Remaining: 1-2 MAXIMUM
• Navigation: CS > INERTIAL (BEACON UNAVAIL)

Ship Status

• Cooling System: 0.74 MPa (63% of specification)
• Nozzle Burnout Probability: 67% on next ignition
• Cumulative Radiation: 480 mSv (dry patch reading)
• Engine Output: 65% (thrust 6.3 MN)

Location Labels

• 天王星エントリー軌道 / 天王星自由港機構 / タイタニア自治圏

- New jurisdiction "タイタニア自治圏" — more specific than EP03's "天王星圏"

Narrative Moments

• 「星は嘘をつかない」のかって — reflecting on EP03's navigation crisis
• 「新しいソーラーライン」を… 私が拓いてやる — series title as mission statement
• Deep space scanner: multiple large ships approaching from Saturn orbit direction

Artifacts

• reports/data/episodes/ep04_onscreen_data.json: Structured on-screen data (14 frames)
• ts/src/extract-frames.py: Updated with EP04 keyframe timestamps
• raw_data/frames/ep04/: Extracted frame images (gitignored)

Dependencies

• Task 146 (frame extraction pipeline) — DONE
• Task 150 (EP03 on-screen data) — DONE