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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 selected, the present invention proposes a fly-by-wire braking system capable of selecting the braking mode

Method used

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

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Embodiment Construction

[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 aircraft is equipped with a brake wheel, has two brake devices, is the double brake wheel of single wheel. The brake discs of the brakes are made entirely of carbon-carbon composite friction material.

[0026]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:

[0027] The thermal reservoir of the small brake device is composed of a compression dis...

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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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