Yellow
April 3rd, 2004, 06:47 PM
Sprayng liquied toxic chemicals from an airplane, might seem to be a quite straightforward method.
But there are some very important factors to observe.
If the chemical is allowed to flow out of the container by pure gravitation, it will be atomizied into a very, very fine mist when it hits the air. This phenomena is known as "air-blast atomization". This fine mist will fall very slowly to the ground and it will be extremly sensitive to even light wind.
The end result might be that the toxic cloud hits the ground many miles from the target area.
To avoid this, the container should be pressurized, and the chemical should be blasted out with high power, through a thin pipe that points backwards, in respect to the direction of the airplane.
This will result in the toxic liquid only be broken up into small drops. These drops will fall much faster to the ground and will not be very much affected by wind.
When empty the container should be droped from the airplane before landing. It is likely to give off small amounts of vapor for some time.
But there are some very important factors to observe.
If the chemical is allowed to flow out of the container by pure gravitation, it will be atomizied into a very, very fine mist when it hits the air. This phenomena is known as "air-blast atomization". This fine mist will fall very slowly to the ground and it will be extremly sensitive to even light wind.
The end result might be that the toxic cloud hits the ground many miles from the target area.
To avoid this, the container should be pressurized, and the chemical should be blasted out with high power, through a thin pipe that points backwards, in respect to the direction of the airplane.
This will result in the toxic liquid only be broken up into small drops. These drops will fall much faster to the ground and will not be very much affected by wind.
When empty the container should be droped from the airplane before landing. It is likely to give off small amounts of vapor for some time.