System for piloting a jet-propelled mobile about the axes of rotation thereof, in particular a missile

The system (1) has three flow deflectors (3-5) acting on an output flow of fixed nozzles (17, 18) of a jet-propelled mobile (M) to control orientation of thrust of the mobile. Controllable actuating units (7-9) e.g. jacks, actuates the deflectors. The first and second flow deflectors e.g. double cut deflectors, respectively act exclusively on the output flow, and are engaged to control the mobile along first and second rotational axes of the mobile. The third deflector e.g. single cut deflector, acts on the output flow at a time to control the mobile along third rotational axis of the mobile.