Defense Systems Digest - 28 August 2018

Typical Passive Infrared (PIR) Based Commercial Motion Detector (source: Wikipedia)

Notable Technical Inquiry

What methods are available for defeating passive infrared (PIR) motion sensors?

DSIAC was tasked with researching solutions to detect, counter/spoof, and neutralize commercial off-the-shelf (COTS) passive infrared motion sensors. With the assistance of subject matter experts (SMEs) at...

Featured News

JHU ERG Completes Construction and Testing of New Facility to Evaluate Performance of Rocket Engine Cooling Mixtures

The Johns Hopkins University Energetics Research Group (JHU ERG) has, with support from the U.S. Air Force Space and Missile Systems Center (SMC), completed the construction and demonstration testing of a new facility to simulate liquid rocket engine cooling channels with cryogenic methane and liquid natural gas (LNG). The facility includes the capability to produce fuel mixtures in the laboratory to test sensitivity and impact of contaminants in methane fuel on operational performance metrics such as thermal stability (the propensity of the fuel to form carbonaceous deposits within the cooling channels, and thus inhibit heat transfer and increase pressure drop within the system), as well as investigate the heat transfer performance of various fuels.