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Airplane wheel fly-by-wire operation brake system capable of selecting braking modes

A brake system and fly-by-wire control technology, which is applied to control mechanisms, aircraft braking arrangements, vehicle components, etc.

Inactive Publication Date: 2016-08-31
XIAN AVIATION BRAKE TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

According to the requirement of single-wheel double-brakes to choose to use brakes, the existing aircraft wheel brake system does not have this capability

Method used

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  • Airplane wheel fly-by-wire operation brake system capable of selecting braking modes

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Embodiment Construction

[0024] See attached figure 1 . The main landing gear is equipped with a brake wheel with two brake devices, which are called single-wheel double-brake wheels. The brake discs of the brakes are made entirely of carbon-carbon composite friction material.

[0025] The two braking devices are respectively a small braking device and a large braking device. The small number of brake discs of the small brake device makes the axial size of the heat storage small, so it is called a small brake device; the number of brake discs of the large brake device is large, so that the axial size of the heat store is large, so it is called a small brake device. Big brakes. Both the small braking device and the large braking device are disclosed in the invention creation with application number 201610281025.2:

[0026] The thermal reservoir of the small brake device is composed of a compression disc, a pressure bearing disc and a moving disc, the number of which is 1 to 2 discs, and is a single...

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Abstract

An airplane wheel fly-by-wire operation brake system capable of selecting brake modes comprises a brake instruction sensor, a control box, an electro-hydraulic servo valve, an electromagnetic valve, an airplane wheel speed sensor and a pressure sensor. The airplane wheel speed sensor, the control box and the electro-hydraulic servo valve form a brake anti-slip control part. The control box and the electromagnetic valve conducts oil path opening and closing through a brake pressure control method to control an airplane to be partly braked through a small brake device or achieve complete brake through a large brake device. The brake pressure value is set to be 40-65% of normal brake pressure. The system is suitable for a single-wheel double-brake airplane wheel with a carbon brake, can meet the requirement that the single-wheel double-brake airplane wheel selects and uses the brake so that the use state of a carbon disc can be adjusted, the good characteristic of abrasion resistance of a carbon-carbon composite friction material is given full play to, the problems that an existing single-wheel single-brake carbon brake disc is large in abrasion and short in service life are effectively solved, the service life of the carbon disc is prolonged, and economic benefits of the carbon disc are improved.

Description

technical field [0001] The invention relates to an aircraft wheel brake system, in particular to a brake control system with single-wheel double brakes and taxi brake selection based on brake pressure. 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 value of th...

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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