Yanpeng Feng
ABSTRACT
For antenna of aircraft, which play a very importance role for communication safety, Once the failure of antenna, the aircraft will lost necessary guidance or without connecting with ground and support center. For mechanical failure for antennas of Boeing and Airbus, the installation structure was many important. In this case, one VHF2 fault was found in the A330 aircraft of one China Airline after flight. To investigation the root cause of the failure antenna, the surface of the antenna was observation by fluorescence detection, but no animal muscle tissue or blood was found. The fracture, macrostructure and microstructure were analysis by optical, scanning electron microscope, result show the fracture was fatigue. The fracture process of VHF2 of the aircraft VHF antenna may be that the bonding layer cracks first, and then fatigue fracture of the metal part of the leading edge of the antenna base occurs under the vibration stress and stress concentration. The causes of rubber cracking and metal fatigue fracture may be vibration or abnormal external load.
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Index Terms
- Failure Analysis of VHF Antenna for A330 Aircrafe
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