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Method for controlling minimum-radius limitation turning of airplane through differential braking

A technology of brake control and aircraft, applied in the direction of aircraft brake arrangement, brake adjuster, etc., can solve the problems of not taking into account the limitations of aircraft structure, potential safety hazards, and poor operability.

Active Publication Date: 2015-11-25
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiencies in the prior art that do not take into account some practical structural limitations in aircraft design, poor maneuverability, and potential safety hazards, the present invention proposes a method that uses differential braking to control the aircraft to the minimum radius. How to make extreme turns

Method used

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  • Method for controlling minimum-radius limitation turning of airplane through differential braking
  • Method for controlling minimum-radius limitation turning of airplane through differential braking
  • Method for controlling minimum-radius limitation turning of airplane through differential braking

Examples

Experimental program
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Effect test

Embodiment 1

[0078] This embodiment is a certain type of aircraft with a maximum front wheel deflection angle of ±42°. When the peak friction coefficient μ between the tire and the runway is between 0.11 and 1, only differential braking is used to achieve extreme turning control with the smallest radius. Methods.

[0079] The concrete process of this embodiment is:

[0080] Step 1, determine the initialization parameters of the aircraft.

[0081] The initialization parameters of the aircraft include the minimum turning radius r of the aircraft, the deflection angle β of the center of gravity of the aircraft and the vertical load of the front wheels of the aircraft, such as figure 1 shown;

[0082] Establish the equation for the minimum turning radius r of the aircraft:

[0083] Formula (1) is the equation for the minimum turning radius r:

[0084] r = a + b + e ...

Embodiment 2

[0141] This embodiment is a certain type of aircraft with a maximum front wheel deflection angle of ±45°. When the peak friction coefficient μ between the tire and the runway is between 0.11 and 1, the minimum radius limit turning control method is realized only through differential braking. , its concrete process is identical with the process of embodiment 1. specifically is:

[0142] Step 1, determine the minimum transition radius r of the aircraft: the specific process of determining the minimum transition radius r of the aircraft is the same as the process of embodiment 1

[0143] Step 2, establishing the motion and dynamic equations of the aircraft: the specific process of establishing the motion and dynamic equations of the aircraft is the same as the process of embodiment 1.

[0144] Step 3, determine the control parameters when the aircraft turns:

[0145] The specific process of determining the control parameters when the aircraft is turning is the same as that of E...

Embodiment 3

[0152] This embodiment is a certain type of aircraft with a maximum front wheel deflection angle of ±48°. When the peak friction coefficient μ between the tire and the runway is between 0.11 and 1, the minimum radius limit turning control method is realized only through differential braking. , its concrete process is identical with the process of embodiment 1. specifically is:

[0153] Step 1, determine the minimum transition radius r of the aircraft: the specific process of determining the minimum transition radius r of the aircraft is the same as the process of embodiment 1

[0154] Step 2, establishing the motion and dynamic equations of the aircraft: the specific process of establishing the motion and dynamic equations of the aircraft is the same as the process of embodiment 1.

[0155] Step 3, determine the control parameters when the aircraft turns:

[0156] The specific process of determining the control parameters when the aircraft is turning is the same as that of E...

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Abstract

Disclosed is a method for controlling minimum-radius limitation turning of an airplane through differential braking. According to a friction coefficient of a tire and a track, visualized braking pressure and turning linear speed control parameters are provided for an aviator, and rapid turning of the airplane with the structurally-allowable minimum turning radius is achieved. Maneuverability and safety of the airplane turning process controlled by the aviator on the ground through the differential braking are ensured.

Description

technical field [0001] The invention relates to the field of aircraft ground turning control, in particular to a method for controlling an aircraft to make extreme turns with a minimum radius by using differential braking. Background technique [0002] Xi'an Aviation Brake Technology Co., Ltd. proposed a method of using differential braking to control the extreme turning of the aircraft in the invention creation with the application number 2015102194044. This method calculates the state parameters and control parameters for the aircraft to achieve continuous and stable turns under various working conditions and turning requirements, and points out the control methods of the aircraft in various continuous and stable turning states. However, the method of using differential braking to control the extreme turning of the aircraft does not take into account some practical structural restrictions that exist during aircraft design, and the method is not very operable and has certai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/48
Inventor 张谦张颖姝
Owner XIAN AVIATION BRAKE TECH
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