Assessing conditions of aircraft wiring
AssigneeThe Boeing Company
InventorsAshok K. Bhattacharya, Ingrid Lapins, Phung Dinh Pham, Douglas D. Saltarelli
Life of this patent
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Abstract
A method of assessing potential conditions affecting aircraft electrical wiring systems. Electrical wiring system components potentially affected by a potential failure condition of the aircraft are identified. Probabilistic and/or statistical methods are used to determine exposure of one or more wire segments of the identified component(s) to hazard and whether the exposure meets a predetermined safety threshold. Effects of potential failure modes of the identified segment(s) on a system safety assessment for the electrical wiring systems are evaluated. This method can be used to facilitate compliance with aircraft safety regulations.
Claims17
A method of assessing potential conditions affecting electrical wiring systems of an aircraft, the method comprising:
- identifying one or more electrical wiring system components potentially affected by a potential failure condition of the aircraft;
- determining exposure of one or more wire segments of the identified wiring system components to hazard and whether the exposure meets a predefined safety threshold, the determining performed using one or more probabilistic and/or statistical methods;
- evaluating effects of one or more potential failure modes of the one or more segments on a system safety assessment for the electrical wiring systems;
- determining a zonal bundle failure rate probability;
- determining a system mitigating factor;
- and
- combining the zonal bundle failure rate probability and the system mitigating factor to obtain a zonal safety threshold.
A method of assessing potential conditions affecting electrical wiring systems of an aircraft, the method comprising:
- identifying one or more electrical wiring system components potentially affected by a potential failure condition of the aircraft;
- determining one or more probabilities of exposure of one or more wire segments of the one or more components to hazard;
- using the one or more probabilities to identify one or more wire segments not meeting one or more predefined safety thresholds;
- evaluating effects of one or more potential failure modes of the one or more identified segments on a system safety assessment for the electrical wiring systems;
- determining a zonal bundle failure rate probability;
- determining a system mitigating factor;
- and
- combining the zonal bundle failure rate probability and the system mitigating factor to obtain a zonal safety threshold.
A method of assessing potential conditions affecting electrical wiring systems of an aircraft, the method comprising:
- identifying one or more electrical wiring system components potentially affected by a potential failure condition of the aircraft;
- analyzing one of the components to identify one or more potentially affected wire bundles;
- isolating wire segments of the one or more bundles for analysis as to potential exposure to hazard;
- analyzing the isolated segments to determine one or more probabilities of exposure to hazard;
- using the one or more probabilities to identify one or more wire segments not meeting one or more predefined safety thresholds;
- evaluating effects of one or more potential failure modes of the one or more identified segments on a system safety assessment for the electrical wiring systems;
- determining a zonal bundle failure rate probability;
- determining a system mitigating factor;
- and
- combining the zonal bundle failure rate probability and the system mitigating factor to obtain a zonal safety threshold.
Dependencies are inferred from the claim text.