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| Application of Damping Vibration Absorbing Technology on the Nacelle Tail Cone of a Specific Type of Aircraft |
| Received:September 06, 2019 Revised:September 06, 2019 |
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| DOI：10.7643/issn.1672-9242.2020.02.013 |
| KeyWord:nacelle tail cone cracks damping vibration absorbing |
| Author | Institution |
| WEI Yu-hong |
AVIC Xi’an Aircraft industry Group Co., Ltd, Xi’an , China |
| LUO Li-min |
AVIC Xi’an Aircraft industry Group Co., Ltd, Xi’an , China |
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| Abstract: |
| The paper aims to study the vibration of a certain type of aircraft naco tailgate, and to develop measures to eliminate the crack of the naco tailgate without subverting the structure. The vibration condition of the nacellum stern cover was tested to analyze the cause of crack formation of the nacellum stern cover. The suitable damping material and treatment method were selected according to the principle of damping technology, and the improvement effect was verified by vibration test. After the adoption of damping vibration absorbing technology, the vibration level was reduced by about 83% to the maximum; the number of peak values was significantly reduced. It had an effective inhibitory effect on the vibration more than 150Hz and 0.8 g, which was prone to generate skin cracks, and could effectively improve the service life of skin structure. The method of damping layer is adopted to reduce the vibration of the cover skin of the nacellum. |
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