Method for diagnosing a fault in an air-conditioning pack of an aircraft
First Claim
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1. A method of diagnosing a fault in an air-conditioning pack of an aircraft where the air-conditioning pack includes one or more sensors outputting data related to air-conditioning pack temperature, air-conditioning pack pressure, or air-conditioning pack valve position, the method comprising:
- transmitting data from at least one of the sensors operably coupled to the air-conditioning pack during one of a pre-flight, a post-flight, or a longest cruise;
comparing the transmitted data to a predetermined threshold at least twice, defining multiple comparisons;
diagnosing, by a controller, a fault of a primary heat exchanger of the air-conditioning pack based on the multiple comparisons of the transmitted data to the predetermined thresholds when the multiple comparisons indicate a water extractor temperature above the predetermined threshold and a compressor outlet temperature above the predetermined threshold;
providing an indication of the diagnosed fault; and
performing maintenance of the air-conditioning pack in accordance with the indication of the diagnosed fault.
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Abstract
A method of diagnosing a fault in an air-conditioning pack of an aircraft is disclosed, wherein the air-conditioning pack includes one or more sensors. The method includes transmitting data from at least one of the sensors operably coupled to the air-conditioning pack, comparing the transmitted data to a predetermined threshold, and diagnosing a fault in the air-conditioning pack based on the comparison.
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Citations
30 Claims
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1. A method of diagnosing a fault in an air-conditioning pack of an aircraft where the air-conditioning pack includes one or more sensors outputting data related to air-conditioning pack temperature, air-conditioning pack pressure, or air-conditioning pack valve position, the method comprising:
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transmitting data from at least one of the sensors operably coupled to the air-conditioning pack during one of a pre-flight, a post-flight, or a longest cruise; comparing the transmitted data to a predetermined threshold at least twice, defining multiple comparisons; diagnosing, by a controller, a fault of a primary heat exchanger of the air-conditioning pack based on the multiple comparisons of the transmitted data to the predetermined thresholds when the multiple comparisons indicate a water extractor temperature above the predetermined threshold and a compressor outlet temperature above the predetermined threshold; providing an indication of the diagnosed fault; and performing maintenance of the air-conditioning pack in accordance with the indication of the diagnosed fault. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of diagnosing a fault in an air-conditioning pack of an aircraft where the air-conditioning pack includes one or more sensors outputting data related to air-conditioning pack temperature, air-conditioning pack pressure, or air-conditioning pack valve position, the method comprising:
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transmitting data from at least one of the sensors operably coupled to the air-conditioning pack during one of a pre-flight, a post-flight, or a longest cruise; comparing the transmitted data to a predetermined threshold at least twice, defining multiple comparisons; diagnosing, by a controller, a fault of a condenser of the air-conditioning pack based on the multiple comparisons of the transmitted data to the predetermined thresholds when the comparisons indicate a compressor outlet temperature above the predetermined threshold and a water extractor temperature that satisfies the predetermined threshold; providing an indication of the diagnosed fault; and performing maintenance of the air-conditioning pack in accordance with the indication of the diagnosed fault. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method of diagnosing a fault in an air-conditioning pack of an aircraft where the air-conditioning pack includes one or more sensors outputting data related to air-conditioning pack temperature, air-conditioning pack pressure, or air-conditioning pack valve position, the method comprising:
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transmitting data from at least one of the sensors operably coupled to the air-conditioning pack during one of a pre-flight, a post-flight, or a longest cruise; comparing the transmitted data to a predetermined threshold at least twice, defining multiple comparisons; diagnosing, by a controller, a fault of a RAM air actuator of the air-conditioning pack based on the multiple comparisons of the transmitted data to the predetermined thresholds when the comparisons indicate RAM air inlet flaps are greater than the predetermined threshold and a pack outlet temperature is low or erratic; providing an indication of the diagnosed fault; and performing maintenance of the air-conditioning pack in accordance with the indication of the diagnosed fault. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification