But lab testing has revealed resonances in some IMUs that make them susceptible more » to moderate amplitude acoustic monotones. At the present time there is no commercial counter-UAS system that directly assaults the mems gyros and accelerometers in the Inertial Measurement Unit on the aircraft. A new approach to UAS threat mitigation is needed that does not create radio interference but is effective against any type of vehicle. Current mitigation using RF interference is effective, but not feasible for fully autonomous systems and is prohibited in many areas.

The increasingly large payloads of Unmanned Aircraft Systems (UASs) are exponentially increasing the threat to the nuclear enterprise. We have: 1) detonated/deflagrated explosive charges of various sizes 2) accurately measured impulse pressure and pulse duration 3) determined what magnitude of acoustic insult to the IMU disrupts flight and for how long and 4) determined if the air blast/shock wave on aircraft/propellers disrupts = , Sandia's energetic materials facility has enabled a quick and thorough exploration of UAS vulnerability to directed acoustic energy by using intense acoustic impulses to destabilize or down a UAS.

But lab testing has revealed resonances in some IMUs that make them susceptible to moderate amplitude acoustic monotones.

Imu drone definition