The color spray relies on the liquid smoking pod that is hung below the aircraft.
The liquid smoke pulling agent with a high boiling point is injected into the pod, and the smoke is blown out of the smoke pulling nozzle through nitrogen pressurization and sent to the high-temperature gas ejected by the engine.
The steam formed condenses into the fog after cooling, and becomes thick color smoke (color fog).
Composition of white smoke
zinc powder, hexachloroethane, ammonium chloride, and potassium perchlorate (hexachloroethane, ammonium chloride, and potassium perchlorate are respectively crushed by crusher and then screened)
Red smoke composition
potassium perchlorate rose essence antimony trisulfide gum Arabic
(potassium perchlorate and antimony trisulfide shall be crushed by crusher respectively and then screened.)
Yellow smoke composition
potassium chlorate, lactose, antimony trisulfide, alkaline chrysanthemum orange auramine (potassium chlorate and lactose shall be crushed by crusher respectively, and then screened)
Green smoke composition
potassium chlorate malachite green antimony trisulfide gum Arabic
(potassium chlorate and antimony trisulfide shall be crushed by crusher respectively and then screened)
Purple smoke composition
potassium chlorate Indigo Rose essence para red flour (potassium chlorate shall be crushed by a pulverizer and then screened)
Blue smoke ingredient
potassium chlorate methyl indigo flour
The smoke pulling system of professional performance aircraft can make the aircraft atomize the liquid smoke pulling agent to form a smoke column in flight. The smoke pulling system of general performance machines is mainly composed of a pressurized conveying device, control device, smoke pulling pod, nozzle, etc.
the pressurized conveying device can be high-pressure gas or oil pump. The liquid smoke pulling agent is pressurized and sent to the nozzle through the control device, which is sprayed out according to the command of the control device. The pressurized conveying device and control device are connected and placed in the smoke pulling pod by pipeline,
The nozzle is installed at the tail nozzle of the engine. After smoke pulling, stop supplying high-pressure gas or cut off the power supply of the oil pump. At this time, a large amount of liquid smoke-pulling agent will remain in the pipeline and smoke-pulling nozzle.
The end of the nozzle is in the tail nozzle of the engine. The ambient temperature is high.
The liquid smoke pulling agent contains explosive substances such as toluene. After mixing with air, the mixed gas is formed, which is easy to explode, This will cause great harm to the safety of the smoke pulling system.
Because the liquid smoke pulling agent is corrosive to the components of the smoke pulling system, the conduit and smoke pulling nozzle need to be cleaned after the performance, and the maintenance of the smoke pulling system is very large.