Use of Water in Counter-Unmanned Aircraft Systems (C-UAS)
Water drone (photo credit: U.S. Army,

Posted on October 14, 2020 | Completed on August 24, 2020 | By: Defense Systems Information Analysis Center (DSIAC)

What studies have been done regarding the use of water to counter drones or drone swarms?

DSIAC was asked to identify studies regarding the use of water in C-UAS.  C-UAS platforms are divided into two primary areas:  detection and tracking systems and interdiction systems.  One example of interdiction C-UAS is a water projector or water cannon.  A water cannon was used at the 2016 Air Force Research Laboratory’s Commander’s Challenge to bring down a drone during a test exercise.  The U.S. Navy is using water cannons and water barrier lines to defend their platforms against high-speed, sea-skimming, antiship cruise missiles.  The wall of water provides a low-cost, universal defense system for Navy ships and has the potential to be applied to C-UAS.  Other water technology being utilized for fire fighting and antipiracy also has the potential for C-UAS utilization.

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