低频振动对超疏水电热除冰方法的增益效果探究

Study on Gain Effect of Low Frequency Vibration on Superhydrophobic Electrothermal De-icing Method

飞机结冰会给飞行安全带来严重损害。针对除冰问题,本文提出了一种超疏水电热低频振动复合式除冰方案。通过热压合工艺制备了电热薄膜,以喷涂方式在薄膜上制备了超疏水表面,并在超疏水电热薄膜的基础上复合低频振动器件,完成了超疏水电热低频振动复合除冰装置的设计制备,同时进行了冰风洞验证试验。结果表明,超疏水电热低频振动复合方法能有效除冰。对试验结果进行了理论分析,认为微小功率的低频振动产生的机械剪切作用是促使冰脱落的主要原因。低频振动的添加对超疏水电热复合除冰方案有显著增益效果,在飞机除冰领域有一定的实际应用潜力。

Icing on an aircraft can seriously impair flight safety.A hybrid de-icing scheme composed of superhydrophobic,electrothermal and low-frequency vibration method is proposed to solve the problem of de-icing.The electrothermal film is prepared by hot pressing process,and the superhydrophobic surface is prepared by spraying on the film,and the low-frequency vibration device is designed and prepared.An ice wind tunnel test is carried out,and the results show that the hybrid scheme composed of superhydrophobic,electrothermal and lowfrequency vibration method can effectively deice.According to the theoretical analysis of the experimental results,it is believed that the main reason for ice shedding is the mechanical shear action caused by low frequency vibration of small power.In conclusion,the addition of low frequency vibration has significant gain effect on the superhydrophobic electrothermal de-icing method,which has practical application potential in the field of aircraft de-icing.