An Approach to Jet Engine Performance Evaluation Using Noise Identification and Classification
Aircraft engines have peculiar thundering sound that is produced due to high rate of fuel-air combustion. However due to improper combustion caused by non proportional air-fuel ratios, malfunction of fuel feed or any other loose gauging, certain abnormal sounds are produced that indicate fault occur...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
National University of Sciences and Technology, Islamabad
2009-12-01
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| Series: | NUST Journal of Engineering Sciences |
| Online Access: | https://journals.nust.edu.pk/index.php/njes/article/view/57 |
| _version_ | 1827974944338739200 |
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| author | Atif Bin Mansoor Hammad Ahmed |
| author_facet | Atif Bin Mansoor Hammad Ahmed |
| author_sort | Atif Bin Mansoor |
| collection | DOAJ |
| description | Aircraft engines have peculiar thundering sound that is produced due to high rate of fuel-air combustion. However due to improper combustion caused by non proportional air-fuel ratios, malfunction of fuel feed or any other loose gauging, certain abnormal sounds are produced that indicate fault occurrence. This research is an attempt to automate fault detection in aircraft jet engines by acoustic observations. The experimental analyses were based on sound analysis of Teledyne J69 Jet Engine. The major work revolves around knowledge of noise features and methodology to extract these features for analysis. Frequency spectrums of audio signals from the engines under test were compared to observe the differences generated by fault noise. A total of 140 samples were analyzed for noise feature extraction and a threshold for noise magnitude was empirically found for automated fault noise identification. This system was extensively tested over 700 audio samples from 76 different engines of same type (Teledyne J69) that lead to the system’s accuracy of 98%. |
| first_indexed | 2024-04-09T20:02:34Z |
| format | Article |
| id | doaj.art-e0b12b1c35e840dfb1a6798342158e2e |
| institution | Directory Open Access Journal |
| issn | 2070-9900 2411-6319 |
| language | English |
| last_indexed | 2024-04-09T20:02:34Z |
| publishDate | 2009-12-01 |
| publisher | National University of Sciences and Technology, Islamabad |
| record_format | Article |
| series | NUST Journal of Engineering Sciences |
| spelling | doaj.art-e0b12b1c35e840dfb1a6798342158e2e2023-04-02T23:24:28ZengNational University of Sciences and Technology, IslamabadNUST Journal of Engineering Sciences2070-99002411-63192009-12-012110.24949/njes.v2i1.57An Approach to Jet Engine Performance Evaluation Using Noise Identification and ClassificationAtif Bin MansoorHammad AhmedAircraft engines have peculiar thundering sound that is produced due to high rate of fuel-air combustion. However due to improper combustion caused by non proportional air-fuel ratios, malfunction of fuel feed or any other loose gauging, certain abnormal sounds are produced that indicate fault occurrence. This research is an attempt to automate fault detection in aircraft jet engines by acoustic observations. The experimental analyses were based on sound analysis of Teledyne J69 Jet Engine. The major work revolves around knowledge of noise features and methodology to extract these features for analysis. Frequency spectrums of audio signals from the engines under test were compared to observe the differences generated by fault noise. A total of 140 samples were analyzed for noise feature extraction and a threshold for noise magnitude was empirically found for automated fault noise identification. This system was extensively tested over 700 audio samples from 76 different engines of same type (Teledyne J69) that lead to the system’s accuracy of 98%.https://journals.nust.edu.pk/index.php/njes/article/view/57 |
| spellingShingle | Atif Bin Mansoor Hammad Ahmed An Approach to Jet Engine Performance Evaluation Using Noise Identification and Classification NUST Journal of Engineering Sciences |
| title | An Approach to Jet Engine Performance Evaluation Using Noise Identification and Classification |
| title_full | An Approach to Jet Engine Performance Evaluation Using Noise Identification and Classification |
| title_fullStr | An Approach to Jet Engine Performance Evaluation Using Noise Identification and Classification |
| title_full_unstemmed | An Approach to Jet Engine Performance Evaluation Using Noise Identification and Classification |
| title_short | An Approach to Jet Engine Performance Evaluation Using Noise Identification and Classification |
| title_sort | approach to jet engine performance evaluation using noise identification and classification |
| url | https://journals.nust.edu.pk/index.php/njes/article/view/57 |
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