Task 20: Episode 4 Analysis

Task 020: Episode 4 Analysis

Analyze orbital mechanics depicted in SOLAR LINE Episode 4 (Part 4).

[x] Collect subtitle data (446 cues via yt-dlp)
[x] Extract dialogue lines (Phase 1: 85 lines from VTT)
[x] Analyze orbital transfers depicted in episode
[x] Implement analysis functions (ep04-analysis.ts)
[x] Write tests (31 tests, all passing)
[x] Create episode report JSON (ep04.json — 5 transfers, 3 explorations, 2 diagrams, 14 quotes)
[x] Build verified: 4 episodes, 19 transfers

Titania approach timing: 9h42m remaining, coolant fails in 12h — margin is real but razor-thin
Plasmoid encounter: Uranus magnetic tilt 60° matches Voyager 2 data (59.7°) within 0.5%. Shield margin 6 min / 14 min total. Actual exposure 480 mSv — within ICRP emergency limits
Uranus departure: 1.51 km/s ΔV from Titania orbit — easily achievable even at 65% thrust
Brachistochrone Uranus→Earth: At 48,000t/65%thrust → ~105 days, 1,202 km/s ΔV. At 300t → ~8 days
Fleet intercept: 5+ ships, 33h out → ~23h available after arrival. Speed requires 842-12,112 km/s depending on remaining distance
Damage constraints: 3-4 burns available, exactly matching escape + brachistochrone (2-3) needs