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Anti-Hail Works
  Rocket technologies
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11.10.2014  13 IGAC Conference on Atmospheric Chemistry (Brazil)
27.02.2013  Davos Atmosphere and Cryosphere Assembly DACA-13
16.02.2013  19th International Conference on Nucleation and Atmospheric Aerosols
04.12.2012  Cuba 2012 tests of ground-based generator
08.04.2012  International Symposium of Hail Defense 2012
10.11.2011  The 10th WMO Scientific Conference on Weather Modification Bali, Indonesia 4-10 October 2011
23.11.2010  Ground based ice-forming aerosol generator
21.11.2010  Film:
"Hour "X". Avoid apokallipsis"
03.10.2010  TV film:
"Heat. Made of hands."
16.05.2010  Studying an effect of salt powder seeding (article)
23.04.2010  Sky Clear 1: precipitation control
01.03.2010  Sky Clear 2: small distance rocket
21.02.2010  Sky Clear 3: ground generator
19.02.2010  Sky Clear 5 (CP): universal system for control precipitation
14.12.2009  Sky Clear 6 (AH): long distance rocket
Anti-Hail Works
Rocket technologies Aircraft technologies Ground generators

The main principle of hail suppression consists in creation of a large number of artificial centers of crystallization, which work for water vapor as additional (and major) way to condense. As a result instead of large hailstones appear smaller ones or even raindrops (if smaller crystals during their fall have time to melt). In brief, do not going into details of models of hail cells formation and accepted methods of influence, it could be declared that the more centers of nucleation at greater temperature would be created during the influence, the more effective would be an instrument of the influence.

Depending on conditions of realization of influence, different way of transportation of ice-nucleation aerosol to a cloud could be applied:

  1. anti-hail rockets (delivery of ice-nucleation aerosol directly into the area of realization of influence).
  2. generation of ice-nucleation aerosol in area of influence from a board of the aircraft (aircraft is equipped with aerosol generator or it can shoot off cartridges, which produce aerosol during their fall through a cloud).
  3. ground generators (they start working in occurrence of potentially hail-dangerous situation in a few hours before a prospective beginning of the processes. During that time a surface air becomes saturated with ice-nucleation aerosols and then dragged up with ascending flows).

Among listed methods the rocket means of influence are the most operative and effective, however because of a number of specific reasons (presence of an infrastructure for work with rockets, accommodation of starting stations, gaining a permission for launching rockets etc.) it isn’t always possible. Usage of ground generators is least effective. However it is used widely enough in places where application of first two methods finds difficulties.

The given comparison of method efficiency is substantially provisional and is based on comparative cost of generation of necessary concentration of ice-nucleation aerosol in influence zones. While efficiency of means of influence is changing the priorities can also be changed. The company produces all types of anti-hail means. Their detail description could be found in corresponding sections.

1. The rocket "Sky Clear-6" on starting installation
2. Tests of the airplane generator on ground
3. The ground generator of ice-nucleation aerosol
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