Flexible calorimetric flow sensor with unprecedented sensitivity and directional resolution for multiple flight parameter detection

Zheng Gong, Weicheng Di, Yonggang Jiang (), Zihao Dong, Zhen Yang, Hong Ye, Hengrui Zhang, Haoji Liu, Zixing Wei, Zhan Tu, Daochun Li, Jinwu Xiang, Xilun Ding, Deyuan Zhang and Huawei Chen
Additional contact information
Zheng Gong: Beihang University
Weicheng Di: Beihang University
Yonggang Jiang: Beihang University
Zihao Dong: Beihang University
Zhen Yang: Beihang University
Hong Ye: Beihang University
Hengrui Zhang: Beihang University
Haoji Liu: Beihang University
Zixing Wei: Beihang University
Zhan Tu: Beihang University
Daochun Li: Beihang University
Jinwu Xiang: Beihang University
Xilun Ding: Beihang University
Deyuan Zhang: Beihang University
Huawei Chen: Beihang University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract The accurate perception of multiple flight parameters, such as the angle of attack, angle of sideslip, and airflow velocity, is essential for the flight control of micro air vehicles, which conventionally rely on arrays of pressure or airflow velocity sensors. Here, we present the estimation of multiple flight parameters using a single flexible calorimetric flow sensor featuring a sophisticated structural design with a suspended array of highly sensitive vanadium oxide thermistors. The proposed sensor achieves an unprecedented velocity resolution of 0.11 mm·s−1 and angular resolution of 0.1°. By attaching the sensor to a wing model, the angles of attack and slip were estimated simultaneously. The triaxial flight velocities and wing vibrations can also be estimated by sensing the relative airflow velocity due to its high sensitivity and fast response. Overall, the proposed sensor has many promising applications in weak airflow sensing and flight control of micro air vehicles.

Date: 2024
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DOI: 10.1038/s41467-024-47284-7

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