Patent ID: 6142585
Filing Date: 2000-11-07
Classification: B60T,Y10S

Abstract:
In an antiskid/autobrake control unit for controlling the application of brake pressure to the brakes of an airplane for decelerating the airplane, said antiskid/autobrake control unit controlled by software, the improvement comprising modifying said software so that some but not all of the brakes of said airplane are released at low speed in order to reduce brake shudder, said software controlling the production of a low-speed brake release current, said low-speed brake release current being applied to the antiskid valves of said some but not all of the brakes of said airplane. said software determining if the speed of the related wheel is less than a first predetermined number of knots and setting the low-speed brake release current to zero if the wheel speed is not less than the first predetermined number of knots, said software determining if the ground speed of the airplane is less than a second predetermined number of knots and setting the low-speed brake release current to zero if the calculated wheelspeed value is less than the second predetermined number of knots.