Task 512: EP01 Reproduction Test Expansion

Status: DONE

Summary

Expand EP01 reproduction tests to cover untested calc JSON sections: brachistochrone150h (3 scenarios), reachableWithShipThrust, massSensitivity (4 mass interpretations), and thrustBoundary72h. EP01 currently has the fewest reproduction test coverage (5 describe blocks) among all episodes.

Tests to Add

EP01 150h brachistochrone (3 tests)

• Closest: accel = 7.553 m/s² (0.770g), ΔV = 4,079 km/s
• Mid/farthest distance and accel values
• All 3 scenarios maintain same distance as 72h

EP01 reachable distance at canonical mass (2 tests)

• At 48,000t in 72h: only 3,429 km reachable (0.023 AU)
• Contrast with Mars-Ganymede 550,631,000 km (161x shortfall)

EP01 mass sensitivity (3 tests)

• 4 scenarios: 48kt, 4.8kt, 480t, 48t
• 480t scenario: accel ~2.08g, reachable 2.29 AU
• 48t scenario: accel ~20.8g, reachable 22.9 AU (exceeds distance)

EP01 thrust boundary at 48,000t (2 tests)

• Required thrust: 1,574 MN (161x Kestrel's 9.8 MN)
• Required accel: 32.78 m/s² (same as brachistochrone 72h)

Impact

Brings EP01 from 5 to ~9 describe blocks, achieving parity with other episodes.