用于飞行器液压制动器的制动致动器技术领域本发明涉及一种用于飞行器液压制动器的制动致动器，所述制动致动器旨在被安装在制动环的其中一个空腔中，所述致动器包括适于密封地接收 所述环的空腔，根据滑动轴线（X）可滑动地安装在所述套筒中的活塞（3），用于在压力下将流体引入所述摩擦元件期间对所述摩擦元件施加制动力 并且具有确定的工作行程;磨损补偿装置（10），该磨损补偿装置借助于可移动的止动件（11）来限定活塞在衬里中的抽出位置，所述可移动的止动件（11）能够在活塞 施加制动力，以及弹性构件（16），用于使活塞朝向支承在可动止动件上的缩回位置返回。 根据本发明，可动止动件减小为摩擦构件与衬套摩擦，使得摩擦构件的一个表面用作限定活塞的退出位置的止动件，并且另一个 表面用作弹性返回构件的支撑件，弹性构件在其压缩期间具有足够的力量增加，以便在活塞在其行程时不触及摩擦元件的情况下能够推动可移动止动件 运营已经被消耗。

The invention relates to a brake actuator for hydraulic brake of an aircraft, intended to be mounted in one of the cavities of a brake ring, the actuator comprising a sleeve (1) adapted to be received in sealing the cavity of the crown, a piston (3) mounted with leaktight sliding in the sleeve in a sliding axis (X) for applying a braking force on the friction elements during the introduction of a fluid under pressure into the cavity, and having a specific working stroke, a wear compensating device (10) which defines a piston retracted position in the sleeve by means of a movable stop (11) which can be advanced by the piston during the applying a braking force, and an elastic member (16) for returning the piston towards the retracted position bearing against the movable stop. According to the invention, the movable abutment is reduced to a friction member rubbing against the liner, so that one of the faces of the friction member acts as a stop defining the piston retracted position, and the other of faces serves to support the elastic return member, the elastic member having at its compression a sufficient increase efforts in order to push the movable stop in case the piston does not touch the friction elements while its race operational already consumed.