Rocket Propulsion
Interactive simulation — adjust parameters and watch the visualization update in real time.
Live graphs
How it works
A rocket loses mass as propellant is ejected backward at high speed relative to the vehicle. The momentum carried away by the exhaust produces a forward thrust proportional to the mass flow rate and effective exhaust speed. This simulation integrates vertical motion with constant gravity; compare the ideal Δv from the rocket equation to the actual speed reached once gravity and burn time are included.
Key equations
T = ṁ u · m dv/dt = T − m g (1D, up positive)
Δv = u ln(m₀ / m_f) (no gravity, all fuel used)