EM LAUNCHER CHARGE STORAGE CALCULATOR

Capacitor bank requirements for electromagnetic projectile acceleration · 45° fixed launch angle

Projectile Mass

Mass Unit

Muzzle Velocity

Velocity Unit

System Efficiency (%)

Bank Voltage (V)

Barrel Length (m)

Required Charge Storage

Capacitance Required

—F

Stored Charge

—C

Stored Energy

—kJ

Derived Parameters

Kinetic Energy (projectile)

—J

Mean Acceleration

—kG

Acceleration Time

—ms

Mean Force

—kN

Max Range (vacuum)

—km

Apogee Height

—km

Governing equations:
KE = ½mv² · E_stored = KE / η · C = 2E / V² · Q = CV
a = v² / 2L · R = v²sin(2θ) / g (θ = 45°)

Typical railgun efficiency: 2–10%. Coilgun: 1–5%. Factor accounts for resistive losses, armature heating, field coupling inefficiency.