Commercial UAV Recovery Parachute Canopy Area, Impact Joules & Min Deployment Altitude Sizer

Deterministic Terminal steady descent V_t = sqrt(2*m*g / (rho * C_d * S_canopy)) impact energy 0.5*m*V_t^2 + Pflanz canopy inflation shock factor engine (.json, .pdf, .csv) built for ParaZero SafeAir, Fruity Chutes Iris, AVSS PRS, Galaxy GRS — zero-upload ephemeral Wasm RAM execution.

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