An interactive companion to Martin (2026), Phase Space Reframing for Directed Fusion Exhaust. Plan and watch brachistochrone voyages between solar-system bodies using a notional p-¹¹B (proton-boron) directed-exhaust drive. The architecture: fusion core, asymmetric magnetic mirror, shaped magnetic nozzle. The numbers are the paper’s parametric estimates.
What this is. A parametric calculator + visualizer. The brachistochrone trajectories, propellant fractions, and Δv numbers come from the paper’s equations (Sections 2-4). Planet positions are J2000 mean orbital elements via the Spacekit library (forked).
What this is not. A particle-tracing simulation, an engineering design study, or a claim that any of this works. p-¹¹B ignition has not been demonstrated by any system; the paper’s Section 5 catalogs the open questions. Treat the numbers as defining a target design space, not predicting performance.
Built with Three.js, the forked Spacekit voyage-modules branch (Brachistochrone, Spacecraft, MissionPlanner), and a single self-contained HTML file. Source code is the page itself — view-source any time.
Credit. Tyler Martin / Lobster Labs. Paper drafted with adversarial review from Claude Opus 4.7, Gemini 3.1, GPT-5.4, Claude Sonnet 4.6. Concept rendering by Gemini.