Rocket-driven Penrose extraction with escape is rare in Kerr spacetime, succeeding at most 1% in broad scans and requiring a/M ≳ 0.89, v_e ≳ 0.91c, and tuned conditions, with up to 70% success only under optimal tuning.
0.88 plusa/M∈ {0.89,0.90,0.92,0.95,0.99}, with 10,000 LHS sam- ples per spin in the focused region
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Rarity of rocket-driven Penrose extraction in Kerr spacetime
Rocket-driven Penrose extraction with escape is rare in Kerr spacetime, succeeding at most 1% in broad scans and requiring a/M ≳ 0.89, v_e ≳ 0.91c, and tuned conditions, with up to 70% success only under optimal tuning.