Airplane electric transmission braking system for improving braking capacity in take-off line and control method
The technology of a braking system and a take-off line is applied in the field of aircraft telex braking system, which can solve the problem of low reliability of the take-off line brake, and achieve the effects of stable pressure output, reasonable design, and safe and reliable use.
Pending Publication Date: 2019-03-29
XIAN AVIATION BRAKE TECH
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Problems solved by technology
[0006] In order to overcome the shortcomings of the low reliability of the take-off line braking of the aircraft fly-by-wire braking system in the prior art, the present invention proposes an aircraft fly-by-wire braking system and a control method that improves the take-off line braking capability
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[0040] The wheels of the front landing gear of the aircraft do not have brakes, and the wheels of the two main landing gears are equipped with brakes. The two aircraft main landing gears are usually arranged symmetrically on both sides of the aircraft fuselage. In this embodiment, one of the main landing gear and one wheel is installed as an example to illustrate the present invention.
[0041] This example includes:
[0042] Brake command sensor 1, control box 2, electro-hydraulic servo valve 3, hydraulic control valve 4, wheel speed sensor 5.
[0043] The control box 2 is electrically connected with the brake command sensor 1 and the wheel speed sensor 5 respectively, and receives the brake command voltage signal sent by the brake command sensor 1 and the wheel speed voltage signal provided by the wheel speed sensor 5; The hydraulic servo valve 3 is electrically connected to send a brake anti-skid control current signal to the electro-hydraulic servo valve 3.
[0044] The...
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The invention relates to an airplane electric transmission braking system for improving the braking capacity in a take-off line and a control method. A control box respectively receives a braking command voltage signal sent by a braking command sensor and an airplane wheel speed voltage signal provided by an airplane wheel speed sensor; the control box sends a braking anti-skid control current signal to an electro-hydraulic servo valve. The electro-hydraulic servo valve is arranged on a hydraulic pipeline in an airplane main undercarriage cabin. A hydraulic control valve is arranged on a hydraulic pipeline output by a braking port of the electro-hydraulic servo valve. When braking in the take-off line, when a hydraulic brake pressure output by the electro-hydraulic servo valve is greater than a preset value, the hydraulic control valve is started, an oil path is switched, and the high-pressure hydraulic pressure of a pressure supply source of a braking system is directly output to an airplane wheel braking device to carry out take-off line braking operation. According to the airplane electric transmission braking system for improving the braking capacity in the take-off line and the control method, the control box interferes and controls a braking control current of the electro-hydraulic servo valve to interfere and control the hydraulic control valve to switch the oil path, sothat dangerous consequences caused by misjudgment and misuse of the take-off line braking are avoided, the take-off line braking reliability is effectively improved, and safe and reliable use of theairplane is ensured.
Description
technical field [0001] The invention relates to an aircraft fly-by-wire braking system, in particular to an aircraft fly-by-wire braking system which improves 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. At the same time, prevent the tire from braking. The aircraft wheel brake system is used for the brake control and anti-skid control of the aircraft wheel. At present, the electronic anti-skid brake system is widely used in the aircraft, and the aircraft fly-by-wire brake system is a further development of the aircraft electronic anti-skid brake system. The aircraft fly-by-wire braking system mainly includes a brake command sensor, an electro-hydraulic servo valve, a wheel speed sensor, and an anti-skid brake control box (referred to as the control...
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IPC IPC(8): B64C25/42B64C25/44
CPCB64C25/42B64C25/44
Inventor 何永乐丛晨陆贤坤支强
Owner XIAN AVIATION BRAKE TECH
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