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| High-order & High-frequency Flutter Characteristic of Wing Carrying Plug-in Weapons |
| Received:June 25, 2018 Revised:September 25, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.09.004 |
| KeyWord:high-order & high frequency flutter aircraft wind tunnel test flight test |
| Author | Institution |
| CHEN Li-yong |
AVIC Hongdu, Nanchang , China |
| WEI Rong-xiang |
AVIC Hongdu, Nanchang , China |
| XIANG Xiao-ping |
AVIC Hongdu, Nanchang , China |
| WANG Qian-wei |
AVIC Hongdu, Nanchang , China |
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| Abstract: |
| Objective To research high-order & high-frequency (HOHF) flutter caused by aircraft wing of multiple plug-ins to provide reference for similar cases. Methods Structure dynamic model of wing carrying multiple plug-ins were developed and corrected. Flutter calculation analysis and low speed wind tunnel test were carried out to finally conduct a flutter flight test. Results Apparent HOHF coupled of aileron rotation and wing 2st twisting could be obtained from flutter analysis and low speed wind tunnel test. Flutter flight test spectrum result also showed that the peak value of low frequency decreased and high frequency rose with the increase of speed. It was basically in line with the rules of tunnel test. HOHF flutter existed. Conclusion Various research methods show high-order & high-frequency flutter and its features. It basically demonstrates the existence of HOHF flutter phenomenon. |
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