Study: A Redesigned Combat Helmet Could Prevent Brain Injuries

By Jennifer Welsh | November 23, 2010 11:45 am

helmetTraumatic brain injury has become the signature war wound for soldiers serving in Iraq and Afghanistan–and new research suggests that soldiers may not be adequately protected against the explosions that cause these injuries. By modeling how blast waves propagate through a soldier’s head, an MIT research group found that current combat helmets don’t offer much protection, because the blast waves from improvised explosive devices (IEDs) can enter the skull through the face.

“There’s a passageway through those soft tissues directly into the brain tissue, without having to go through bone or anything hard,” said Raul Radovitzky, an aeronautical engineer at the Massachusetts Institute of Technology. [LiveScience]

In the study, which was published online in Proceedings of the National Academy of Sciences, the researchers created their own computer model based on a real person’s brain scans; what they found actually contradicted findings from earlier, rougher models. A previous study, published in August, suggested that current helmet design actually increases brain injuries during an explosion by focusing and intensifying the blast waves inside the helmet.

“The existing Advanced Combat Helmet… does not worsen the negative effects of a blast wave–does not enhance the energy of the blast–as has been previously suggested,” Dr Radovitzky told BBC News. “But we also find that it doesn’t really help much; it doesn’t mitigate the blast wave significantly.” [BBC News]

The authors suggested a new design with a polycarbonate shield that comes down over the face, which would deflect the force of the blast awat from the face’s soft tissues. The shield would resemble the clear plastic visor used in motorcycle helmets.

With a shield in place, “you actually do mitigate the effects of the blast quite significantly,” said Raul Radovitzky [LA Times]

Changing the helmets for an entire army isn’t so easy, though, especially when other factors come into account–like the limited visibility that might come with a face shield. Says Radovitzky:

“There are of course many other aspects of putting a face shield on a soldier’s helmet that need to be taken into account, like how you would affect the situational awareness of the soldier, how they can operate without being hindered by the device.” [BBC News]

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Image: Flickr/The U.S. Army

  • Matt

    I can see it now, the shield would normally be retracted, half into each side of the helmet. When an explosion is detected, the shield would snap into position sort of like what an air bag does in a car crash.

    The soldier would just have to be careful not to be picking his nose or sticking out his tongue at the time.

  • carlos

    if this goes farther you could have an electronic display that can be customized or turned off and in theory could be like a video game and measuring the soilder’s movement of the gun will create a cross hair in the display.

  • Jouni

    This seems quite obvious now when you say it. Of course you have to wear the best protective shields when doing dangerous jobs.

  • James

    A little late for this don’t you think…

  • http://www.mtekweaponsystems.com/ Travis

    A friend of mine developed a device designed specifically for this application after many of his fellow soldiers suffered from mortal wounds to the face/brain. They will withstand a point blank 44 magnum blast to the face. He has been in talks with our Military officials, and some have slowly adopted the system. Some of our Military will not let our soldiers purchase these and wear them of their own volition. Please visit MTek’s website, spread the word, and/or friend them on Facebook. dub dub dub dot mtekweaponsystems dot com

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