Transactions of Nanjing University of Aeronautics & Astronautics
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 10Keywords:
Project Supported:
This work was financially supported by the National Natural Science Foundation of China （Nos. 11832012， 12227802）.
Clc Number:
V19
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