AIRCRAFT BRAKE HEALTH MONITORING SYSTEM AND METHOD
First Claim
1. A method of estimating health of aircraft brake system friction material, comprising the steps of:
- sensing a temperature of the friction material;
supplying the sensed temperature to a processor-implemented thermal model, the processor-implemented thermal model configured to estimate friction material temperatures at one or more locations on the friction material;
supplying the estimates of friction material temperatures to a processor-implemented thermal oxidation model, the processor-implemented thermal oxidation model configured, based on the estimates of friction material temperatures, to estimate friction material loss due to thermal oxidation;
supplying data representative of runway fluid exposure to a processor-implemented catalytic oxidation model, the processor-implemented catalytic oxidation model configured, based on the runway fluid exposure, to estimate friction material loss due to catalytic oxidation; and
estimating the health of the friction material based on the estimates of friction material loss from the processor-implemented thermal oxidation model and the processor-implemented catalytic oxidation model.
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Accused Products
Abstract
A system method of estimating health of aircraft brake system friction material includes sensing a temperature of the friction material, and supplying the sensed temperature to a processor-implemented thermal model that is configured to estimate friction material temperatures at one or more locations on the friction material. The estimates of friction material temperatures are supplied to a processor-implemented thermal oxidation model that is configured, based on the estimates of friction material temperatures, to estimate friction material loss due to thermal oxidation. Data representative of runway fluid exposure are supplied to a processor-implemented catalytic oxidation model that is configured, based on the runway fluid exposure, to estimate friction material loss due to catalytic oxidation. The health of the friction material is estimated based on the estimates of friction material loss from the processor-implemented thermal oxidation model and the processor-implemented catalytic oxidation model.
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Citations
20 Claims
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1. A method of estimating health of aircraft brake system friction material, comprising the steps of:
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sensing a temperature of the friction material; supplying the sensed temperature to a processor-implemented thermal model, the processor-implemented thermal model configured to estimate friction material temperatures at one or more locations on the friction material; supplying the estimates of friction material temperatures to a processor-implemented thermal oxidation model, the processor-implemented thermal oxidation model configured, based on the estimates of friction material temperatures, to estimate friction material loss due to thermal oxidation; supplying data representative of runway fluid exposure to a processor-implemented catalytic oxidation model, the processor-implemented catalytic oxidation model configured, based on the runway fluid exposure, to estimate friction material loss due to catalytic oxidation; and estimating the health of the friction material based on the estimates of friction material loss from the processor-implemented thermal oxidation model and the processor-implemented catalytic oxidation model. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for estimating remaining useful life of brake system friction material, comprising:
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a temperature sensor configured to sense a temperature that is at least representative of the friction material and supply a friction material temperature signal; a runway fluid data source configured to at least selectively supply data representative of runway fluid exposure; and a processor coupled to receive the friction material temperature signal and the data representative of runway fluid exposure and configured, upon receipt thereof, to; estimate friction material temperatures at one or more locations on the friction material, estimate friction material loss due to thermal oxidation based on the estimates of friction material temperatures, estimate friction material loss due to catalytic oxidation based on the runway fluid exposure, and estimate the remaining useful life of the friction material based on the estimates of friction material loss. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification