A method of operating an aircraft
AssigneeAirbus Operations GmbH
InventorCarlos CUESTA CASTRO
Life of this patent
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Abstract
A method of operating an aircraft is disclosing including, during a non-braking time period, taxiing the aircraft by using driving torque provided by a landing gear drive system, and not providing a braking torque from the landing gear brake system, and, during a braking time period, providing the brake command device at one or more command levels within a sub-range of a brake command range, and controlling the landing gear drive system, in response to the level of the brake command device, to reduce the driving torque provided.
Claims28
A method of operating an aircraft, the aircraft having:
- a) a landing gear drive system for providing driving torque during taxiing,
- b) a landing gear brake system for providing braking torque during taxiing, and
- c) a brake command device with a plurality of different command levels over a brake command range,
- the method comprising the steps of:
- i) during a non-braking time period;
- taxiing the aircraft by using driving torque provided by the landing gear drive system, and
- not providing a braking torque from the landing gear brake system,
- ii) during a braking time period;
- providing the brake command device at one or more command levels within a sub-range of the brake command range, and
- controlling the landing gear drive system, in response to the level of the brake command device, to reduce the driving torque provided from that in step i).
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An aircraft controller for controlling an aircraft during taxiing, the aircraft controller comprising:
- a) a brake command device input indicating a command level of a brake command device over a brake command range,
- b) a drive command device input indicating a command level of a drive command device, and
- c) a landing gear drive system command output providing a command for a landing gear drive system,
- wherein the controller is configured so that:
- i) when the brake command device input indicates a command level in a first sub-range of the brake command range, the landing gear drive system command output provides a command for the landing gear drive system to provide a driving torque to taxi the aircraft, and
- ii) when the brake command device input indicates a command level in a second sub-range of the brake command range, the landing gear drive system command output provides a command for the landing gear drive system to provide a reduced driving torque than that in i).
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A landing gear drive system comprising:
- a motor for providing a motor torque,
- a drive gear in drive connection with the motor, for providing a driving torque to a landing gear wheel,
- a controller for controlling the level of motor torque provided by the motor, the controller comprising:
- a control input for providing an indication of the desired driving torque, and
- a reduction factor input for providing an indication of a reduction factor to be applied to the desired driving torque,
- wherein the controller is configured to control the level of motor torque based on the control input and the reduction factor input.
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Dependencies are inferred from the claim text.