Method for controlling brake efficiency of aircraft carbon brake disc in wet state

• Main Authors: LU JIULI, TIAN GUANGLAI
• Format: Patent
• Language: Chinese; English
• Published: 18.07.2012
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL

Disclosed is a method for controlling brake efficiency of an aircraft carbon brake disc in a wet state. The method includes steps of setting the largest brake pressure according to the lowest required braking deceleration rate of the carbon brake disc with large energy load in the wet state; determining and controlling objective deceleration rate according to the largest moment limit value; and calculating real-time wheel brake deceleration rate according to a wheel speed signal in an aircraft braking process, comparing the real-time wheel brake deceleration rate with the objective deceleration rate, reducing pressure by the aid of a pressure regulating device when the actual wheel deceleration rate is larger than the objective deceleration rate so as to guarantee that the brake deceleration rate does not exceed the objective deceleration rate. The method for controlling brake efficiency of the aircraft carbon brake disc in the wet state sufficiently utilizes the friction characteristic of the ground, expands