JING Zhiwei. Interesting Beat Phenomenon for Airfoil[J]. International Journal of Plant Engineering and Management, 2022, 27(1): 18-28

Interesting Beat Phenomenon for Airfoil
JING Zhiwei
General Configuration and Aerodynamics Design Department, Xi'an Aircraft Design Institute, Xi'an 710089, China
The airfoil with two degrees is simulated to get the beat phenomenon.The results indicate that the occurrence of beat phenomenon is very sensitive to the equivalent frequency and damping,contributed by the structural and aerodynamic ones.Only the equivalent damping approaches to zero and the equivalent frequency is very close to the gust frequency which the beat phenomenon occurs.
Key words:    beat phenomenon    aeroelasticity    gust    flutter    airfoil   
Received: 2021-09-18     Revised:
DOI: 10.13434/j.cnki.1007-4546.2022.0102
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JING Zhiwei

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