Failure Analysis and Mechanism Research of Abnormal Stopping of a Certain Type of Aero-Engine
Regarding the failure of a certain type of unmanned aerial vehicle (UAV) crashing due to abnormal engine shutdown during its flight, in order to determine the cause of the failure, studies encompassing data analysis, fault localization, mechanism analysis, and fault reproduction are carried out arou...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Aero Weaponry
2025-06-01
|
| Series: | Hangkong bingqi |
| Subjects: | |
| Online Access: | https://www.aeroweaponry.avic.com/fileup/1673-5048/PDF/2024-0212.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849689699343400960 |
|---|---|
| author | Su Baoquan, Zhou Deyuan, He Jie |
| author_facet | Su Baoquan, Zhou Deyuan, He Jie |
| author_sort | Su Baoquan, Zhou Deyuan, He Jie |
| collection | DOAJ |
| description | Regarding the failure of a certain type of unmanned aerial vehicle (UAV) crashing due to abnormal engine shutdown during its flight, in order to determine the cause of the failure, studies encompassing data analysis, fault localization, mechanism analysis, and fault reproduction are carried out around the engine body, fuel system, and engine control system. The results indicated that because of the considerable difference in thermal expansion coefficients among materials, the voltage regulator diode in the engine ignition control box experienced fatigue cracking at the welding part between the internal chip and the molybdenum column under the tensile stress of high-temperature epoxy resin, generating a gap. This resulted in the failure of the thyristor to open during the discharge process, preventing the high-voltage coil from generating voltage, causing ignition failure and resulting in a decrease in engine speed and subsequent shutdown. Finally, solutions are proposed, effectively addressing the practical problem and providing technical support for the performance testing of this type of UAV and the efficiency evaluation of the engine. |
| format | Article |
| id | doaj-art-e635b03c7bf443cd957813c2a1bee89b |
| institution | DOAJ |
| issn | 1673-5048 |
| language | zho |
| publishDate | 2025-06-01 |
| publisher | Editorial Office of Aero Weaponry |
| record_format | Article |
| series | Hangkong bingqi |
| spelling | doaj-art-e635b03c7bf443cd957813c2a1bee89b2025-08-20T03:21:32ZzhoEditorial Office of Aero WeaponryHangkong bingqi1673-50482025-06-0132310811410.12132/ISSN.1673-5048.2024.0212Failure Analysis and Mechanism Research of Abnormal Stopping of a Certain Type of Aero-EngineSu Baoquan, Zhou Deyuan, He Jie01. CNAD Xi'an Power Control Technology Co., Xi'an 710077, China;2. China Huayin Arms Test Center, Weinan 714200, ChinaRegarding the failure of a certain type of unmanned aerial vehicle (UAV) crashing due to abnormal engine shutdown during its flight, in order to determine the cause of the failure, studies encompassing data analysis, fault localization, mechanism analysis, and fault reproduction are carried out around the engine body, fuel system, and engine control system. The results indicated that because of the considerable difference in thermal expansion coefficients among materials, the voltage regulator diode in the engine ignition control box experienced fatigue cracking at the welding part between the internal chip and the molybdenum column under the tensile stress of high-temperature epoxy resin, generating a gap. This resulted in the failure of the thyristor to open during the discharge process, preventing the high-voltage coil from generating voltage, causing ignition failure and resulting in a decrease in engine speed and subsequent shutdown. Finally, solutions are proposed, effectively addressing the practical problem and providing technical support for the performance testing of this type of UAV and the efficiency evaluation of the engine.https://www.aeroweaponry.avic.com/fileup/1673-5048/PDF/2024-0212.pdf|aero-engine|failure analysis|in-flight shutdown|control box|ignitor |
| spellingShingle | Su Baoquan, Zhou Deyuan, He Jie Failure Analysis and Mechanism Research of Abnormal Stopping of a Certain Type of Aero-Engine Hangkong bingqi |aero-engine|failure analysis|in-flight shutdown|control box|ignitor |
| title | Failure Analysis and Mechanism Research of Abnormal Stopping of a Certain Type of Aero-Engine |
| title_full | Failure Analysis and Mechanism Research of Abnormal Stopping of a Certain Type of Aero-Engine |
| title_fullStr | Failure Analysis and Mechanism Research of Abnormal Stopping of a Certain Type of Aero-Engine |
| title_full_unstemmed | Failure Analysis and Mechanism Research of Abnormal Stopping of a Certain Type of Aero-Engine |
| title_short | Failure Analysis and Mechanism Research of Abnormal Stopping of a Certain Type of Aero-Engine |
| title_sort | failure analysis and mechanism research of abnormal stopping of a certain type of aero engine |
| topic | |aero-engine|failure analysis|in-flight shutdown|control box|ignitor |
| url | https://www.aeroweaponry.avic.com/fileup/1673-5048/PDF/2024-0212.pdf |
| work_keys_str_mv | AT subaoquanzhoudeyuanhejie failureanalysisandmechanismresearchofabnormalstoppingofacertaintypeofaeroengine |