Aircraft brake control system
AssigneeAirbus Operations GmbH
InventorsCarlos CUESTA CASTRO, Andrew HEBBORN
Life of this patent
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Abstract
An aircraft brake control system for controlling a plurality of brakeable wheels of a landing gear. Each brakeable wheel includes a brake actuator and a wheel speed sensor. The system includes a controller configured to receive aircraft control parameters and provide brake commands to the brake actuator of each wheel. The controller being configured to activate pre-retraction braking in response to an aircraft control parameter indicating that landing gear retraction is required and execute a functional brake test during pre-retraction braking.
Claims16
An aircraft brake control system for controlling a plurality of brakeable wheels of a landing gear, each of the brakeable wheels comprising a brake actuator and a wheel speed sensor, wherein the aircraft brake control system comprises:
- a controller configured to receive aircraft control parameters and provide brake commands to the brake actuator of each of the brakeable wheels, the controller configured to:
- activate pre-retraction braking in response to an aircraft control parameter indicating that landing gear retraction is required;
- and
- execute a functional brake test during pre-retraction braking, the functional brake test comprising:
- issuing sequential brake commands to the brake actuators of at least a first brakeable wheel and a second brakeable wheel of the plurality of brakeable wheels to cause at least two of the brakeable wheels to be braked in sequence;
- and
- independently monitoring the wheel speed sensors of each of the brakeable wheels.
A method of operating an aircraft braking system, the aircraft braking system including a plurality of brakeable wheels, each of the brakeable wheels comprising a brake actuator and a wheel speed sensor, the method comprising:
- performing a functional brake test during pre-retraction braking, in response to a landing gear retraction command, and wherein the functional brake test comprises:
- monitoring a speed of each of the brakeable wheels;
- sequentially activating the brake actuators of the brakeable wheels;
- and
- monitoring a response of the wheel speed of each of the brakeable wheels to the sequential brake actuation.
An aircraft brake system comprising:
- a plurality of brake actuators each associated with one of a plurality of wheels;
- a plurality of sensors to measure a speed of each of the plurality of wheels;
- and
- a processor comprising
- an input for receiving aircraft system commands,
- an output for issuing instructions to the plurality of brake actuators;
- and
- a machine-readable medium comprising instructions executable by the processor in response to an input indicating landing gear retraction to cause the aircraft brake system to:
- activate a first of the plurality of brake actuators, without activating a second of the plurality of brake actuators;
- activate the second of the plurality of brake actuators after a pre-determined time delay following activation of the first brake actuator;
- and
- monitor the speed sensors of each of the plurality of wheels during the activation of both the first and second plurality of brake actuators
Dependencies are inferred from the claim text.