Digital mapping of surface turbulence status and aerodynamic stall on wings of a flying aircraft

Zijie Xu, Leo N. Y. Cao, Chengyu Li, Yingjin Luo, Erming Su, Weizhe Wang, Wei Tang, Zhaohui Yao () and Zhong Lin Wang ()
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Zijie Xu: Chinese Academy of Sciences
Leo N. Y. Cao: Chinese Academy of Sciences
Chengyu Li: Chinese Academy of Sciences
Yingjin Luo: Chinese Academy of Sciences
Erming Su: Chinese Academy of Sciences
Weizhe Wang: University of Chinese Academy of Sciences
Wei Tang: Chinese Academy of Sciences
Zhaohui Yao: University of Chinese Academy of Sciences
Zhong Lin Wang: Chinese Academy of Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract Real-time monitoring of flow turbulence is very difficult but extremely important in fluid dynamics, which plays an important role in flight safety and control. Turbulence can cause airflow to detach at the end of the wings, potentially resulting in the aerodynamic stall of aircraft and causing flight accidents. Here, we developed a lightweight and conformable system on the wing surface of aircraft for stall sensing. Quantitative data about airflow turbulence and the degree of boundary layer separation are provided in situ using conjunct signals provided by both triboelectric and piezoelectric effects. Thus, the system can visualize and directly measure the airflow detaching process on the airfoil, and senses the degree of airflow separation during and after a stall for large aircraft and unmanned aerial vehicles.

Date: 2023
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DOI: 10.1038/s41467-023-38486-6

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