Patent ID: 7810755

Claim:
A landing-gear system for an airplane comprising: at least one leg for the landing gear that can be moved between two positions by means of a landing-gear leg two-way hydraulic actuator, and at least one trap-door that can be moved between two positions and driven by means of a trap-door two-way hydraulic actuator, wherein the two-way hydraulic actuators of the at least one landing gear and of the at least one trap-door are supplied with hydraulic fluid by a hydraulic distributor with a single body that has an assembly of hydraulic components that assure the supply of the two-way actuators for control of the movements of the at least one landing-gear leg and of the at least one trap-door and that comprises hydraulic connections between these components for the functioning of distributor, said assembly of hydraulic components comprising: at least one selection valve for the control of at least one landing-gear leg two-way hydraulic actuator assuring the movements of the at least one landing-gear leg, at least one selection valve for the control of the at least one trap-door two-way hydraulic actuator assuring the movements of the at least one trap-door, at least one valve having a position in which chambers the at least one trap-door two-way actuator of the at least one trap-door are in communication, at least one valve having a position in which chambers of each of the two-way hydraulic actuators of the at least one landing gear leg and of the at least one trap-door are in communication.