What method of deicing is used?
Aircraft deicing is mostly done with deicing liquid, which is a deicing liquid containing ethylene glycol or propylene glycol and is heated
To about 82 degrees Celsius, use a special de-icing truck to spray the surface of the aircraft to remove ice on the surface of the aircraft. At the same time, after the deicing liquid is mixed with whom, the freezing point will be reduced, similar to the principle that water is not easy to freeze after mixing with alcohol. The freezing point of the mixture of deicing liquid and water can be as low as minus 50 degrees Celsius, which can prevent reicing. However, this effect has a certain time limit, beyond the time limit, the anti-icing effect will fail and need to be deiced again.
Liquid anti-icing is a physical anti-icing method, its basic principle is to reduce the ice and the aircraft with the help of a liquid
Surface adhesion or reduce the freezing temperature of water on the aircraft's anti-icing surface. Liquid anti-icing system has been applied in anti-icing of windscreen and propeller of piston engine. The main problem is to equip enough anti-icing liquid and choose appropriate method to spray the anti-icing liquid onto the anti-icing surface.
The liquid anti-icing system can continuously or periodically spray the working liquid to the anti-icing surface. Required working fluid
It has the characteristics of low condensation temperature, good mixing performance with water, strong adhesion with anti-ice surface, no chemical corrosion effect on anti-ice surface, non-toxic, and good fire performance. However, the deicing sprayed on the surface of the aircraft will have a certain impact on the aerodynamic performance of the aircraft, and thus affect the lift of the aircraft, which changes with the concentration, viscosity and temperature of the liquid.
A lot of big airports now have deicing trucks near the end of the runway, where the plane taxis to deice,
In addition to the immediate departure of the aircraft, this can improve the efficiency of the airport operation, but also save airline costs.
This deicing fluid, it doesn't smell much, it's probably not corrosive, or it wouldn't be used on airplanes,
How delicate the plane is! However, the deicing fluid is sticky, slippery and attached to the fuselage, which will make the plane dirty, but also increase the weight of the plane and increase the fuel consumption of the flight. The airline only cleans the body appearance once, and the price is 3000-5000 yuan. If the plane is bigger, the price is higher! Inside and out is the cost, save can not save.
Up to now, aircraft deicing is basically operated directly by people, so it is performed in deicing
When operating, there is often a deviation, once the deicing liquid is sprayed into the wrong place, it often causes injuries, equipment damage, and aircraft system failure.