Influence of brake-disc friction characteristics on anti-skid braking control system of aircraft

Xiaoqiong Du, Bin Li, Linyin Luo

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

The low-frequency landing gear walk of aircraft during braking processis studied. Firstly, by virtual of LMS Virtual.Lab motion software, the multi-body dynamic model of the landing gear is established, the motion pair and internal and external loads are applied, and the torsion spring is set at the connection between the landing gear and the fuselage to simulate the flexibility of the landing gear. Then, the variation of friction coefficient of brake discis considered in the model of braking pressure and torque. When the braking control system works, if the braking pressure is less than the limit value, the gear walk is less affected by the friction characteristics of the brake disc. If the braking pressure reaches the limit value, the law of gear walk is the same as that of the pilot's manual control of the braking pressure. At this time, the gear walk is only affected by the positive and negative slope of the friction coefficient of the brake disc. If the friction coefficient curve of the brake disc presents a negative slope, it may cause gear walk, and the greater the absolute value of the slope, the more obvious the gear walk is. Improving the friction characteristics of brake discs can provide a new strategy forgear walk control.

Original languageEnglish
Article number012016
JournalJournal of Physics: Conference Series
Volume2364
Issue number1
DOIs
StatePublished - 2022
Event2022 International Conference on Aerospace, Aerodynamics and Mechatronics Engineering, AAME 2022 - Singapore, Virtual, Singapore
Duration: 22 Jul 202224 Jul 2022

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