Brake system

A brake system (1) configured for an air vehicle (V) having a plurality of wheels (2) enabling the air vehicle (V) to move on a ground (Z), comprising:

• at least one rotating structure (3) provided on the air vehicle (V) so as to be concentric with the wheel (2) and to perform rotational movement together with the wheel (2);
• a friction element (4) contacting and compressing the rotating structure (3) so as to generate a brake force to slow down the air vehicle (V);
• an actuator (5) triggered by an electric motor (E) to actuate the friction element (4) so that it moves closer to and/or away from the rotating structure (3);
• a control unit (6) enabling to control an amount of current supplied to an electric motor (E), more than one brake level (7) changing in dependence to the amount of current supplied to the electric motor (E) and expressing a magnitude of the brake force applied to the air vehicle (V), according to which the rotating structure (3) and friction element (4) contact each other;
• wherein the control unit (6) is configured to prevent the contact between the rotating structure (3) and the friction element (4) for a period of time as predetermined by a manufacturer when it is switched between brake levels (7) on a brake command given by a user and/or the control unit (6), thereby enabling to reduce losses due to power transmission elements and thus enabling predetermined brake forces to be applied to the wheels (2);
• and
• wherein the actuator (5) increases a distance between the friction element (4) and the rotating structure (3) according to a manufacturer-predetermined time command it receives from the control unit (6), moves the friction element (4) only in a time-dependent manner so as to move the friction element (4) away from the rotating structure (3) and bring the friction element (4) closer to the rotating structure (3) in equal time, so as to move the friction element (4) away from the rotating structure (3) when the brake system is brought to a released position (R), in which the rotating structure (3) does not contact the friction element (4), thereby enabling the generated brake force to be not varied in dependence to a wearing out level of the friction element (4) and/or the rotating structure (3) and/or in dependence to a thickness of the friction element (4).