Posts Tagged ‘DARPA’
Darpa: Freeze Soldiers to Save Injured Brains
From Wired:
The Pentagon’s mad science division has a new way to deal with the 70,000+ troops diagnosed with traumatic brain injury: freeze ‘em.
Darpa, the military’s far-out research arm, is looking for research projects that would create a “therapeutic hypothermia device” to prevent traumatic brain injuries from causing permanent molecular damage to the brain. The idea is based on successful studies that used cortical cooling to treat survivors of strokes and cardiac arrest. According to Darpa’s solicitation, cooling down the brain after trauma can offer “dramatic neuroprotection” that will prevent long-term harm to cognition and motor skills.
So far, Darpa-funded studies suggest that traumatic brain injuries are caused by repeated exposure to blasts, specifically the “supersonic wave” of highly-pressurized air they emit. Within a fraction of a second after impact, brain cells, tissues and blood vessels are stretched,…
Pentagon Unveils New Chembot
via cnet
The Defense Advanced Research Projects Agency and the U.S. Army Research Office awarded a multimillion-dollar contract to iRobot to create the flexible military bot. The maker of the Roomba and Scooba, along with University of Chicago researchers, showed off the oozy results at the Iros conference (the IEEE/RSJ International Conference on Intelligent Robots and Systems) in St. Louis this week.
DARPA envisions the palm-size ChemBot as a mobile robot that can traverse soft terrain and navigate through small openings, such as tiny wall cracks, during reconnaissance and search-and-rescue missions. It gets around by way of a process called “jamming,” in which material can transition between semiliquid and solid states with only a slight change in volume.
In ChemBot’s case, a flexible silicone skin encapsulates a series of pockets containing a mix of air and loosely packed particles. When air is removed from the compartments, the skin attempts to equalize the pressure differential by constricting the particles, which shift slightly to fill the void left by the evacuated air.
In that way, the weird little blob inflates and deflates parts of its body, changing size and shape–and scaring the living daylights out of us. We don’t know exactly when ChemBot will join the Armed Forces, but we can only beg: please, oh please, keep it away from us.
