Transactions of Nanjing University of Aeronautics & Astronautics
Anti-icing Skin with Micro-nano Structure Inspired by Fargesia Qinlingensis
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Abstract:
Aircraft icing has a significant impact on flight safety， as ice accumulation on airfoils and engines can cause aircraft stalls. Developing anti-icing technology that can adapt to harsh and cold environment presents a challenge. Here， we propose a new anti-icing skin with micro-nano structure inspired by the bamboo leaf called Fargesia qinlingensis. A multilayer non-uniform height （MNH） micro-nano structure is proposed based on the Fargesia qinlingensis surface structure. The anti-icing mechanism of the MNH micro-nano structure is revealed. The flexible large-area MNH micro-nano structure is fabricated based on hierarchical assembly method. Compared with the smooth surface， the ice adhesion strength of the prepared bio-inspired surface is reduced by 80%， indicating that the MNH micro-nano structure inspired by Fargesia qinlingensis has ice-phobic effect. Based on this， an anti-icing hybrid skin based on bionics and electric heating is developed. The anti-icing hybrid skin has successfully completed the anti-icing function flight test on the UAV. To realize the effective anti-icing function under super cold conditions， the anti-icing hybrid skin has been applied on a certain type of UAVs. The bio-inspired anti-icing skin has broad application prospects in large transport aircraft， helicopters， wind power generation， and high-speed trains.
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Project Supported:
This work was supported in part by the National Natural Science Foundation of China （Nos.51875478， 51735011， 52111530127） and the Foundation of National Key Laboratory of Science and Technology on Aerodynamic Design and Research （No.61422010102）. The authors realize that the time and space available for a review of such an ambitious subject are limited and， thus， regretfully， we are unable to cover many important contributions.
Clc Number:
V244.15
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