What is the aircraft deicing spray?

A heated mixture of ethylene glycol and water.

Aircraft deicing operation: spraying deicing liquid We often see that airport deicing will spray a liquid, which is a mixture of ethylene glycol and water after heating, and its freezing temperature is lower than that of water, which can remove the formed ice and prevent more ice accumulation.

Generally speaking, deicing fluids are divided into type I, type II, type III and type IV. At present, most deicing fluids in China are type I, and type II has only gradually become popular in the last year or two. Deicing fluids, such as No.93 and No.97 gasoline, as well as auxiliary deicing vehicles and other facilities must be replaced.

Under normal circumstances, spraying deicing liquid can last for about 15 minutes. If the waiting time exceeds 15 minutes due to control and other reasons, it is necessary to carry out secondary deicing and spray anti-icing liquid, which can last for 40 minutes. Generally speaking, the cost of deicing at a time is tens of thousands of RMB. This is also the reason why airlines have a headache in cold and snowy days.

Reasons for aircraft deicing:

It is understood that once the aircraft freezes, ice, snow and frost will attach to all air intakes, resulting in abnormal operation of aircraft systems, engines or components.

The ice and snow attached to the surface of the aircraft will not only increase the weight and resistance of the aircraft, but also reduce the lift of the aircraft. When an airplane is running, the transparent ice on the fuselage will fall off and damage the fuselage or engine.