Patent ID: 8746612
Filing Date: 2014-06-10
Classification: B64C,Y02T

Abstract:
1. An aircraft having wheels fitted with hydraulically-actuating friction brake means and also hydraulically-actuated independent drive means for driving the wheels in rotation and enabling the aircraft to move in stages of independent drive in which the engines of the aircraft are inactive, wherein the aircraft is fitted with at least: a main hydraulic circuit including a first pressure source, activated by at least one of the main aircraft engines, that powers the brake means when the first pressure source is active; an alternative braking circuit for enabling brake means to be actuated at least when the engines of the aircraft are stopped, the alternative braking circuit including an accumulator that is used for parking braking; and an auxiliary hydraulic circuit pressurized by an auxiliary pump means activated by an auxiliary power unit of the aircraft to enable the independent drive means to be actuated; the auxiliary hydraulic circuit being connected to the alternative braking circuit to maintain an operating pressure in the accumulator of the alternative braking circuit, wherein the accumulator is kept under pressure by the first pressure source of the main circuit when the first pressure source is active; and wherein the accumulator is kept under pressure by the auxiliary pump means when the first pressure source is inactive.