Due to the expensive nature of rockets, a major challenge consists in reducing their costs. Launchers in particular are quite expensive and the majority is expendable. Market competition brought aerospace enterprises to search for new ways to cut prices, notably by reusing their launch systems. During each stage of ascension, specific boosters constituting the rocket are decoupled, generally left to fall into the sea. One of the reason why launchers are not reused comes down to the lack of knowledge on the health status of their components, including their actuators. The latter typically serve to orientate the nozzle for propulsion. In case of reusable launchers, additional electromechanical actuators (EMAs) can be included to control stabilizing fins and to deploy legs during descent.