METHOD OF MONITORING AIRCRAFT BRAKE PERFORMANCE AND APPARATUS FOR PERFORMING SUCH A METHOD
First Claim
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1. A method of monitoring the performance of an aircraft wheel brake comprising the steps of:
- providing an aircraft having a wheel brake,measuring brake performance input variable data during a braking operation,calculating an energy demand to be absorbed by the brake over at least part of the braking operation using the brake control input variable data,measuring brake performance output variable data during the braking operation,calculating an energy absorbed by the brake over at least part of the braking operation using the brake performance output variable data,determining a brake performance metric from the energy demand and the energy absorbed,comparing the brake performance metric with a brake performance criterion to detect impaired performance of the brake.
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Abstract
A brake performance monitoring system operates by an energy differential calculated from brake demand energy and energy absorbed during a braking operation. A significant differential would be reported as a possible problem with the braking system.
27 Citations
15 Claims
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1. A method of monitoring the performance of an aircraft wheel brake comprising the steps of:
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providing an aircraft having a wheel brake, measuring brake performance input variable data during a braking operation, calculating an energy demand to be absorbed by the brake over at least part of the braking operation using the brake control input variable data, measuring brake performance output variable data during the braking operation, calculating an energy absorbed by the brake over at least part of the braking operation using the brake performance output variable data, determining a brake performance metric from the energy demand and the energy absorbed, comparing the brake performance metric with a brake performance criterion to detect impaired performance of the brake. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An aircraft wheel brake monitoring apparatus comprising:
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a memory, a first sensor arranged to measure brake performance input variable data during a braking operation and send the brake performance input variable data to the memory, a second sensor arranged to measure brake performance output variable data during the braking operation and send the brake performance output variable data to the memory, a processor arranged to access the memory and configured to; (i) calculate energy demand to be absorbed by the brake over at least part of a braking operation using the brake control input variable data, (ii) calculate energy absorbed by the brake over at least part of a braking operation using the brake performance output variable data, (iii) calculate a brake performance metric from the energy demand and the energy absorbed, and, (iv) compare the brake performance metric with a brake performance criterion to detect impaired performance of the brake.
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Specification