Monitoring friction associated with a plurality of aircraft wheels
AssigneeAirbus Operations GmbH
InventorsVincent Nicolas, Jamie McGirr
Life of this patent
Estimating the term…
Abstract
A method of monitoring friction associated with a plurality of aircraft wheels of an aircraft, the method including, for each of the plurality of aircraft wheels, obtaining wheel speed data associated with the aircraft wheel. The method includes determining, based at least in part on the wheel speed data, deceleration of the aircraft wheel during a time interval, and determining, based at least in part on the determined deceleration, a value indicative of friction associated with the aircraft wheel. The method includes providing, based at least in part on the determined value, a signal indicative of a level of friction associated with the aircraft wheel.
Claims20
A method of monitoring friction associated with a plurality of aircraft wheels of an aircraft, the method comprising:
- retracting at least one landing gear including the aircraft wheels after take-off of the aircraft;
- and
- for each aircraft wheel of the plurality of aircraft wheels:
- obtaining wheel speed data associated with the aircraft wheel during a period between when take-off of the aircraft occurs and when retraction braking is applied to the aircraft wheel;
- determining that no residual pressure was applied by the brake to the aircraft wheel during a time interval within the period;
- determining, based at least in part on the wheel speed data, deceleration of the aircraft wheel during the time interval;
- determining, based at least in part on the determined deceleration, a value indicative of friction associated with the aircraft wheel;
- and
- providing, based at least in part on the determined value, a signal indicative of a level of friction associated with the aircraft wheel.
A method of monitoring friction associated with an aircraft wheel of an aircraft, the method comprising, for each of a plurality of flights of the aircraft:
- retracting a landing gear with the aircraft wheel after take-off of the aircraft;
- during a period between when take-off of the aircraft occurs and when retraction braking is applied to the aircraft wheel, obtaining wheel speed data associated with the aircraft wheel;
- determining that no residual pressure was applied by the brake to the aircraft wheel during a time interval within the period;
- determining, based at least in part on the wheel speed data, deceleration of the aircraft wheel during the time interval;
- determining, based at least in part on the determined deceleration, the value indicative of friction associated with the aircraft wheel;
- and
- providing, based at least in part on the determined value, the signal indicative of a level of friction associated with the aircraft wheel.
An aircraft system comprising:
- a plurality of aircraft wheels;
- a landing gear retraction system configured to retract at least one landing gear with the plurality of aircraft wheels;
- and
- one or more controllers configured to, for each aircraft wheel of the plurality of aircraft wheels, monitor friction by:
- obtaining wheel speed data associated with the aircraft wheel during a period between when take-off of the aircraft occurs and when retraction braking is applied to the aircraft wheel;
- determining that no residual pressure was applied by the brake to the aircraft wheel during a time interval within the period;
- determining, based at least in part on the wheel speed data, deceleration of the aircraft wheel during the time interval;
- determining, based at least in part on the determined deceleration, a value indicative of friction associated with the aircraft wheel;
- and
- providing, based at least in part on the determined value, a signal indicative of a level of friction associated with the aircraft wheel.
Dependencies are inferred from the claim text.