Landing a rocket vertically is difficult, as it involves decelerating, manoeuvring and balancing the rocket at the same time. Deceleration is achieved by providing thrust in the opposite direction of the velocity vector of the rocket, but manoeuvring requires angling the thrust vector, and this produces both linear and rotational acceleration, depending on the rocket design. This behavior resembles balancing a pole on the fingertip - an inverted pendulum.
4 окт 2024
