Investigation of nose cone electrothermal anti-icing control law

Appropriate control law of periodic electrothermal system can not only achieve the effect of anti-icing, and can significantly improve the utilization of energy. Transient conduction equation of a nose cone multilayer structure is solved by using the finite difference method. Heating and cooling time of the electric heating device are calculated by selecting the proper surface temperature range and the heating power density. Then, the impact of flight conditions, surface temperature and power density on the electric heating control law and anti-icing system energy consumption is analyzed respectively. The results show that: anti-icing control law is mainly decided by the flight conditions, the surface temperature and the heating power density; Energy consumption of the anti-icing system becomes higher when the nose cone encounters more severe flight conditions or needs higher surface temperature, besides, it decreases first and then increases with the growing heating power density.