Fly-by-wire brake system capable of selecting brake modes

A technology of fly-by-wire control and braking system, which is applied to control mechanisms, vehicle components, braking transmission devices, etc., and can solve the problem of not being able to select the braking method

Inactive Publication Date: 2016-11-09
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the inadequacy of the prior art that the braking mode cannot be selecte

Method used

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  • Fly-by-wire brake system capable of selecting brake modes

Examples

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Example Embodiment

[0024] This embodiment is a fly-by-wire braking system capable of selecting a braking mode.

[0025] See attached figure 1 . The main landing gear of the aircraft is equipped with a brake wheel with two brake devices, which is a single wheel and double brake wheel. The brake disc of the brake device is entirely made of carbon-carbon composite friction material.

[0026] The two braking devices are a small braking device and a large braking device. The small brake device has a small number of brake discs, which makes the axial size of the thermal storage small, so it is called a small brake device; the large brake device has a large number of brake discs, which makes the thermal storage large axial size, so it is called Big brake device. Both the said small brake device and the large brake device are disclosed in the invention with application number 201610281025.2:

[0027] The thermal storage of the small brake device is composed of a compression disc, a pressure-bearing disc, ...

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Abstract

Provided is a fly-by-wire control brake system capable of selecting brake modes. A brake command sensor, an airplane wheel speed sensor, a control box and an electro-hydraulic servo valve form a brake slipping prevention control part. The control box, a magnetic valve and the airplane wheel speed sensor are used for achieving braking selection for an airplane through a brake speed control method. The brake command sensor replaces a hydraulic brake valve, and the electro-hydraulic servo valve is in a positive gain mode. A hydraulic pipeline delivered from the brake system to an airplane wheel brake device is divided into a small brake device hydraulic branch pipeline and a large brake device hydraulic branch pipeline, braking selection is achieved through on-off control over the large brake device hydraulic branch pipeline, and the purposes of reducing abrasion to a carton plate during slipping braking and prolonging the service life of the carbon plate are achieved. The problems that an existing carbon brake plate for a single-wheel single-brake mode is badly abraded and is short in service life are solved, the service life of the carbon plate is prolonged, and the economic benefits of the carbon plate are increased.

Description

technical field [0001] The invention relates to an aircraft wheel braking system, in particular to an aircraft single-wheel double-braking brake control system with taxiing brake selection based on braking speed. Background technique [0002] Compared with steel brakes, aircraft carbon brakes have the advantages of light weight, wear resistance, high specific heat, and non-bonding at high temperatures because the brake discs are completely made of carbon-carbon composite friction materials, which significantly improves the technical performance and reliability of aircraft use. Safety, maintenance and economy, so it is widely used in modern aircraft. Carbon brakes are especially suitable for high-energy braking situations, and their excellent friction and wear characteristics endow carbon brake discs with durable qualities. However, after the carbon brake was put into field operation, it was found that the service life of the carbon brake disc could not reach the given life ...

Claims

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Application Information

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IPC IPC(8): B64C25/44B60T8/171B60T8/32B60T13/68
CPCB60T8/171B60T8/325B60T13/686B64C25/44
Inventor 何永乐王红玲
Owner XIAN AVIATION BRAKE TECH
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