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PolskiAsteroid Deflection: Kinetic Impactor vs Gravity Tractor Trade Study (2D)
2D mission-planning lab: pick asteroid diameter, warning time and spacecraft mass, then compare the delta-v a kinetic impactor delivers instantly against what a gravity tractor builds up over years, and see the resulting miss distance at encounter against real safety thresholds.
This 2D companion is a mission-planning trade study, not a single-technique demo: it runs the same threat (asteroid diameter, warning time) through two real deflection concepts side by side — an instantaneous DART-style kinetic impactor with ejecta momentum enhancement, and a continuous gravity-tractor tug — so you can see how each delta-v budget converts into a miss distance at encounter against real safety thresholds (Earth's radius plus atmosphere, and lunar distance as a "clearly safe" bar).
Kinetic impactor delta-v follows Δv = β·m·v / M (momentum transfer with ejecta enhancement factor β, DART-calibrated); gravity tractor delta-v follows Δv = (G·m/d²)·0.9Δt (continuous low-thrust hover). Both feed the standard first-order Δs ≈ 3·Δv·Δt planetary-defense budgeting relation, compared against Earth's radius+atmosphere and lunar-distance safety thresholds.
2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install