Moving Clouds Away

Moving Clouds Away

They move clouds away in the sky over Moscow three times a year. Just recently they did it again to provide nice weather for the Victory Parade and the firework. But how do the prepare aircrafts to make the weather good? The minimum task is to prevent rainfall, the maximum task is to move all clouds away.

Moving Clouds Away

An-12VK.

Initially they planned to use up to ten planes An-12 and An-26. But the weather forecasts didn’t promise anything bad so they decided to use less planes.

The USSR actively started to develop rainfall enhancement in the 40s. Since the 60s this technology has been used to increase precipitation in arid regions. But after the Chernobyl tragedy (when they could not allow precipitation in the zone of 30 km from the reactor trying to avoid washing of radioactive substances into the Pripyat and Dnieper rivers) they decided to use the technology in the opposite purposes.

The technology worked as they planned and eventually became highly demanded. The measures ensuring good weather have been taken in Moscow since 2000.

Moving Clouds Away

Four types of reagents are applied:

– powder reagents – cement;

– freezing reagents – liquid nitrogen;

– granulated carbon dioxide;

– squibs containing silver iodide to deal with cumulus clouds.

Chemicals are usually sprayed at a distance of two to three hours of wind transfer from a protected point: if the speed at the height where precipitation is formed is equal to 60km/h, the treatment should be done 100-150 km away.

Moving Clouds Away

An-12 is ready for loading with reagents.

Moving Clouds Away

Loading the boxes with cement.

Moving Clouds Away

Each box of cement weighs 27 kg. They are placed and connected with stringsĀ in a special way to open fast when required.

Moving Clouds Away

Done.

Moving Clouds Away

Such nitrogen generators are used for treatment of clouds with liquid notrogen.

Moving Clouds Away

This is how it looks from outside. To the left is an ordinary window, to the right is a sprayer.

Moving Clouds Away

Granulated carbon dioxide (dry ice) is loaded into the collapsible insulated container at night the day before tretament. The carbon dioxide evaporates and becomes invisible, that’s why there must be draft during the loading, so they open all windows and doors. Otherwise carbon dioxide will fill all the lower part of te plane and penetrates the cabin of the crew. The cement and granulated carbon dioxide are discharged through the ramp.

Moving Clouds Away

The amount of chemicals they take depends on the weather forecast.

There is special equipment in the plane that transmits data down to the land – in such a way they choose the most efficient chemicals to discharge.

Moving Clouds Away

Before the flight the plane is filled with oxygen. They gonna need it when fly high.

Moving Clouds Away

Oxygen cylinders with hoses of necessary length.

Moving Clouds Away

All operators have undergone parachute training. Two operators will discharge cement from the plane, the third will be at some ditance and control the state of health. Operators are fastened with such hooks you see above.

Moving Clouds Away

An-12VK – cabin of pilots.

Moving Clouds Away

Navigator’s working place.

Moving Clouds Away

Control panel.

Moving Clouds Away

The place of the co-pilot.

Moving Clouds Away

Moving Clouds Away

Airtight cabin of the personnel that accompanies a cargo.

Moving Clouds Away

Moving Clouds Away

And this is An-26.

Moving Clouds Away

Fueling.

Moving Clouds Away

Moving Clouds Away

Moving Clouds Away

Cargo compartment of An-26.

Moving Clouds Away

Installing the nitrogen generator.

Moving Clouds Away

Cabin of pilots in the An-26.

Moving Clouds Away

We hope there will be more cloudless days in upcoming summer.

via sergey-lutsenko

 

7 thoughts on “Moving Clouds Away”

  1. WOW super creepy. the usa government denies spraying a bunch of crap on to the populus. thanks for showing us how its done.

  2. Pure, fresh air also is a “chemicals”. Moreover, we consist out of “chemicals”.
    Many of the “chemicals”, we, lets to say, urinate, – are much more dangerous than dust, inertial element (N2), and dry ice. And regulary, you will pay money for silver iodide (about 50-200 grams in one plane used) in your air. Look at wiki.
    http://en.wikipedia.org/wiki/Silver_iodide

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