Method of assisting piloting a hybrid rotorcraft provided with a lift rotor and with at least one propeller propulsive rotor that generates thrust

A method of facilitating piloting a hybrid rotorcraft, the hybrid rotorcraft having a propulsive system comprising at least one propulsive rotor provided with a plurality of first blades having a first variable pitch at least for participating in providing forward propulsion for the hybrid rotorcraft, the hybrid rotorcraft further including a lift rotor provided with a plurality of second blades having a second variable pitch at least for participating in providing lift for the hybrid rotorcraft, the hybrid rotorcraft having a power plant provided with at least one engine operating at at least one rating for driving the lift rotor in rotation and driving each propulsive rotor of the at least one propulsive rotor in rotation;

• wherein the method includes the following step:
• displaying on a single indicator a first pointer and a second pointer, a position of the first pointer along a movement path varies as a function of a first power from the power plant that is consumed by the propulsive system, a position of the second pointer along the movement path varies as a function of a second power from the power plant that is consumed by the lift rotor, the movement path extending from a first end to a second end, the first pointer moving towards the second end on condition that the first power increases, and the second pointer moving towards the first end on condition that the second power increases, a variable space between the first pointer and the second pointer representing a power margin from the power plant that is not used at the rating so long as the first pointer is situated between the first end and the second pointer.