The Blanket Effect is intended for others to learn about weather modification and its related subjects in an easy to understand way. Started in 2005, this blog is a work in progress as the technology advances

November 25, 2006

From Rockets To Flares

(note: Rocket based cloud seeding began in the 70's with crude missile type rockets that are still used in China as well as commercially in the States. Now the ground based weather machines have evolved into sleek firing machines that hardly look like their predecessors did. Below are excerpts beginning with the original patent system for rocket weather modification and ending with two of the most visible commercial weather modification companies using such systems on the web today.)


This is a division, of application Ser. No. 59,892 filed July 31, 1970

ABSTRACT: A chemical system for releasing a good yield of free barium (Ba°) atoms and barium ions (BA+) to create ion clouds in the upper atmosphere and interplanetary space for the study of the geophysical properties of the medium. (image right example of cloud seeding rockets, from

What is claimed as new and desired to be se
cured by Letters Patent of the United States is: 1. Apparatus for releasing free barium atoms and barium ions in the upper atmosphere to emit resonance radiation in the form of a luminous cloud comprising:
  • a rocket vehicle capable of being launched into the upper atmosphere of earth,
  • a longitudinally configured payload carried by said rocket vehicle,
  • said payload including:
  • a fuel tank disposed at one end of the payload,
  • an oxidizer tank disposed at the opposite end of the payload, and
  • an open ended combustion chamber diametrically disposed intermediate said fuel tank and said oxidizer tank and with both ends thereof being open to the atmosphere,
  • conduit means connecting said fuel tank and said oxidizer tank to said combustion chamber,
  • valve means disposed in said conduit means for selectively permitting fluid flow from said fuel tank and said oxidizer tank into said combustion chamber,
  • a liquid fuel having a quantity of barium salts dissolved therein disposed within said fuel tank,
  • a liquid oxidizer disposed in said oxidizer tank
  • said liquid fuel and said liquid oxidizer having the inherent chemical property characteristics of undergoing a hypergolic reaction upon contact with each other whereby, when said valve means permit flow of said liquid fuel and said liquid oxidizer into said combustion chamber the resulting hypergolic reaction releases a high yield of luminous barium atoms and barium ions.

  • Weather Modification, Inc. 3802 20th St. N Fargo, ND 58102

    WMI offers the latest in ground-based pyrotechnic applications, specifically, the ground-based flare tree, or GBFT. Our GBFT incorporates a “tripod base”, which provides exceptional stability in even the most extreme weather conditions, and easy leveling.
  • Shown here, the WMI GBFT supports nine racks, each holding up to 12 glaciogenic or hygroscopic flares. The GBFT can be configured for either manual or remote-controlled operation.

  • The remotely-controlled GBFTs are controllable by either cellular or satellite telephone, depending upon availability of reliable service at the site. Local power is provided by deep-cycle batteries, recharged by solar panel.

  • In applications characterized by extended periods of cloud weather, thermoelectric generators can be used in lieu of the solar panels.

  • Flares can be ignited as rapidly as the operator wishes, so multiple flares can be burned at one time if the situation warrants.

  • WMI custom builds GBFTs, so we can provide the capacity you need.

  • Ice Crystal Engineering, LLC

    Jim Gunkelman
    15985 49th R Street SE
    Davenport, North Dakota 58021

  • ICE Weather modification flares have been tested by the Cloud Simulation and Aerosol Laboratories Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado, USA

  • ICE Weather modification cloud seeding flares are field proven on projects throughout the world to be extremely reliable and efficient.
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