Testing Apparatus for Simulating Rain and Fog

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The U.S. Navy seeks a partner for licensing and collaboration on a rain and fog testing apparatus for use in testing lasers, laser accessories, and electro-optic devices such as cameras, thermal imagers, and other vision devices.

The military uses lasers and electro-optical equipment in the field and in conditions that cannot always be predicted. Weather and other environmental factors can change the way some equipment functions or even cause it to become irreparably damaged or nonfunctioning. Some of these factors include rain, fog, or other precipitation. It is necessary to be able to test laser and EO devices to determine how far they can penetrate through these conditions such as how well an image can be see through rain or how much information a laser can transmit through fog.

Naval Surface Warfare Center, Crane Division (NSWC Crane) has developed a controlled rain and fog testing device that can simulate different environmental precipitation such as a light drizzle, a torrential downpour, or conditions in the middle. The testing device is scalable depending on the conditions and the equipment that needs to be tested. For very large testing ranges, the device operates on a body of water, which limits pollution or runoff problems. The nozzles create spray patterns through electro-mechanical screw type solenoids which allow for individual nozzles to be controlled independently. Other effects include using gravity to closely simulate falling rain, hot water heats for replicating fog, and pumps for mimicking torrential downpours.
Utility Patent
United States
Aug 22, 2017

United States
Aug 22, 2017
Purdue Office of Technology Commercialization
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