Normal brake system used for airplane and having take-off line brake capability

Abstract

The invention discloses a normal brake system used for an airplane and having take-off line brake capability. The normal brake system comprises a hydraulic brake valve, an electric valve, an electro-hydraulic servo valve, an anti-slip control box, a hydraulic switch and a speed sensor, wherein the hydraulic brake valve is mounted near a pedal mechanism under a bottom plate of a cockpit, controlled by operation of stepping on a brake pedal by a pilot and used for outputting a required brake pressure; the electric valve is mounted on a hydraulic pipeline at the downstream part of the hydraulic brake valve; the electro-hydraulic servo valve is mounted on a hydraulic pipeline at the downstream part of the electric valve; the anti-slip control box is mounted in a main landing gear cabin and powered by a power supply on the airplane; the hydraulic switch is mounted on a hydraulic pipeline between the hydraulic brake valve and a first oil inlet of the electric valve. The normal brake system can meet a braking demand of an existing normal brake system of the airplane on a take-off line, is reasonable in structure, simple, convenient, feasible, consistent with a man-machine engineering principle and favorable for reducing the burden of the pilot, and eliminates accident potentials caused by false operation of switching on a take-off line brake switch.

Description

technical field

[0001] The invention relates to an aircraft wheel hydraulic braking system, in particular to an aircraft hydraulic braking system whose normal braking system of the aircraft fully has the braking capability of the take-off line. Background technique

[0002] The aircraft wheel brake system is a component of modern aircraft landing gear, and is the basic guarantee equipment for the safe operation of aircraft take-off, landing roll and ground taxi control. Prevent punctured tires. The modern aircraft wheel braking system usually includes a normal braking system (working medium is hydraulic oil) and an emergency braking system (usually compressed gas). The emergency braking system is a safety measure for the driver to take after the normal braking system fails. Due to the increase of the take-off thrust of the aircraft, the brake pressure of the take-off line wheel increases, especially in the case of using carbon brakes, the existing normal braking system can ...

Examples

Embodiment Construction

[0021] see figure 2 . The front landing gear wheels of modern aircraft generally do not have brakes, and brake devices are equipped on the wheels of the two main landing gears. The two aircraft main landing gears are usually arranged symmetrically on both sides of the aircraft fuselage. This embodiment takes one of the main landing gear and one wheel installed as an example to illustrate the control process of the aircraft hydraulic brake system main landing gear braking the wheel normally and the take-off line braking. Since emergency braking is not involved, the aircraft emergency braking system is not shown in the figure. Emergency brake system is by prior art.

[0022] In this embodiment, the power supply circuit of the electric valve is hydraulically controlled to control the movement of the spool valve of the electric valve to realize the control of the brake wheel 7, that is, the brake wheel 7 can be braked by the foot, and the normal brake system can also realize t...

technical field

[0001] The invention relates to an aircraft wheel hydraulic braking system, in particular to an aircraft hydraulic braking system whose normal braking system of the aircraft fully has the braking capability of the take-off line. Background technique

[0002] The aircraft wheel brake system is a component of modern aircraft landing gear, and is the basic guarantee equipment for the safe operation of aircraft take-off, landing roll and ground taxi control. Prevent punctured tires. The modern aircraft wheel braking system usually includes a normal braking system (working medium is hydraulic oil) and an emergency braking system (usually compressed gas). The emergency braking system is a safety measure for the driver to take after the normal braking system fails. Due to the increase of the take-off thrust of the aircraft, the brake pressure of the take-off line wheel increases, especially in the case of using carbon brakes, the existing normal braking system can ...

Examples

Embodiment Construction

[0021] see figure 2 . The front landing gear wheels of modern aircraft generally do not have brakes, and brake devices are equipped on the wheels of the two main landing gears. The two aircraft main landing gears are usually arranged symmetrically on both sides of the aircraft fuselage. This embodiment takes one of the main landing gear and one wheel installed as an example to illustrate the control process of the aircraft hydraulic brake system main landing gear braking the wheel normally and the take-off line braking. Since emergency braking is not involved, the aircraft emergency braking system is not shown in the figure. Emergency brake system is by prior art.

[0022] In this embodiment, the power supply circuit of the electric valve is hydraulically controlled to control the movement of the spool valve of the electric valve to realize the control of the brake wheel 7, that is, the brake wheel 7 can be braked by the foot, and the normal brake system can also realize t...

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