Through-Life Maintenance Cost of Digital Avionics
Modern avionics can account for around 30% of the total cost of the aircraft. Therefore, it is essential to reduce the operational cost of avionics during a lifetime. This article addresses the critical scientific problem of creating the appropriate maintenance models for digital avionics systems th...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-01-01
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| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/11/2/715 |
| _version_ | 1797412200897314816 |
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| author | Ahmed Raza Vladimir Ulansky |
| author_facet | Ahmed Raza Vladimir Ulansky |
| author_sort | Ahmed Raza |
| collection | DOAJ |
| description | Modern avionics can account for around 30% of the total cost of the aircraft. Therefore, it is essential to reduce the operational cost of avionics during a lifetime. This article addresses the critical scientific problem of creating the appropriate maintenance models for digital avionics systems that significantly increase their operational effectiveness. In this research, we propose the lifecycle cost equations to select the best option for the maintenance of digital avionics. The proposed cost equations consider permanent failures, intermittent faults, and false-positives occurred during the flight. The lifecycle cost equations are determined for the warranty and the post-warranty interval of aircraft operation. We model several maintenance options for each period of service. The cost equations consider the characteristics of the permanent failures and intermittent faults, conditional probabilities of in-flight false-positive and true-positive as well as the cost of different maintenance operations, duration of the flight, and some other parameters. We have demonstrated that a three-level post-warranty maintenance variant with a detector of intermittent faults is the best because it minimizes the total expected maintenance cost several folds compared to other maintenance options. |
| first_indexed | 2024-03-09T04:58:37Z |
| format | Article |
| id | doaj.art-e70f2434b1834617a817b4dcd7e34eef |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T04:58:37Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-e70f2434b1834617a817b4dcd7e34eef2023-12-03T13:02:43ZengMDPI AGApplied Sciences2076-34172021-01-0111271510.3390/app11020715Through-Life Maintenance Cost of Digital AvionicsAhmed Raza0Vladimir Ulansky1Projects and Maintenance Section, The Private Department of the President of the United Arab Emirates, Abu Dhabi 000372, UAEDepartment of Electronics, Robotics, Monitoring and IoT Technologies, National Aviation University, 03058 Kyiv, UkraineModern avionics can account for around 30% of the total cost of the aircraft. Therefore, it is essential to reduce the operational cost of avionics during a lifetime. This article addresses the critical scientific problem of creating the appropriate maintenance models for digital avionics systems that significantly increase their operational effectiveness. In this research, we propose the lifecycle cost equations to select the best option for the maintenance of digital avionics. The proposed cost equations consider permanent failures, intermittent faults, and false-positives occurred during the flight. The lifecycle cost equations are determined for the warranty and the post-warranty interval of aircraft operation. We model several maintenance options for each period of service. The cost equations consider the characteristics of the permanent failures and intermittent faults, conditional probabilities of in-flight false-positive and true-positive as well as the cost of different maintenance operations, duration of the flight, and some other parameters. We have demonstrated that a three-level post-warranty maintenance variant with a detector of intermittent faults is the best because it minimizes the total expected maintenance cost several folds compared to other maintenance options.https://www.mdpi.com/2076-3417/11/2/715avionics maintenanceintermittent faultpermanent failurein-flight false-positiveautomated test equipmentmean time between unscheduled removals |
| spellingShingle | Ahmed Raza Vladimir Ulansky Through-Life Maintenance Cost of Digital Avionics Applied Sciences avionics maintenance intermittent fault permanent failure in-flight false-positive automated test equipment mean time between unscheduled removals |
| title | Through-Life Maintenance Cost of Digital Avionics |
| title_full | Through-Life Maintenance Cost of Digital Avionics |
| title_fullStr | Through-Life Maintenance Cost of Digital Avionics |
| title_full_unstemmed | Through-Life Maintenance Cost of Digital Avionics |
| title_short | Through-Life Maintenance Cost of Digital Avionics |
| title_sort | through life maintenance cost of digital avionics |
| topic | avionics maintenance intermittent fault permanent failure in-flight false-positive automated test equipment mean time between unscheduled removals |
| url | https://www.mdpi.com/2076-3417/11/2/715 |
| work_keys_str_mv | AT ahmedraza throughlifemaintenancecostofdigitalavionics AT vladimirulansky throughlifemaintenancecostofdigitalavionics |