Experimental Investigation of Super-hydrophobic/Electro-thermal Synergistically Anti-icing/De-icing Strategy in Ice Wind Tunnel

doi:10.16356/j.1005-1120.2023.02.008

Transactions of Nanjing University of Aeronautics & Astronautics

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Archive > Volume Issue 2 > 2023(2):193-204. DOI:10.16356/j.1005-1120.2023.02.008 Prev Next

Experimental Investigation of Super-hydrophobic/Electro-thermal Synergistically Anti-icing/De-icing Strategy in Ice Wind Tunnel

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Abstract:

The icing of unmanned aerial vehicles （UAVs） poses a serious threat to flight safety. The available energy of UAVs is inadequate， so an energy-efficient ice protection strategy is required. In this paper，an integral fiberglass composite airfoil is tested， which has super-hydrophobic coating and embedded electro-thermal film （SHS-EET）. The proportional integral derivative method （PID） is used to adjust surface temperature and heating power. Experiments are conducted in an icing wind tunnel to verify the anti-icing/de-icing performance of the strategy. The results show that the super-hydrophobic coating without a heating source fails to avoid the formation of accreted ice. In addition， the ice shedding period of SHS-EET is reduced by 64.6% and the energy consumption is reduced by 72.3%. As the surface temperature is lower than 10 ℃， SHS-EET achieves dry anti-icing. And it reduces energy consumption by 27.5% compared with the wet anti-icing strategy of a fiberglass airfoil with underground electro-thermal film （FG-UET）. The hybrid anti-icing /de-icing strategy is beneficial for the development of the icing protection system for UAVs.

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This work was financially supported by the National Natural Science Foundation of China （Nos. 11832012， 12227802）.

Clc Number:

V19