Airbags have evolved from being in cars to on cars , so it’s only natural that airbags in aircraft should be making the trip outside. NASA’s Subsonic Rotary Wing Project is attempting to make autorotation landings a little bit softer by slapping a pair of expandable kevlar cushions between the skids, and the first test was a success. The helo was dropped at a height of 35 feet, achieving a speed of 48 feet-per-second before unceremoniously hitting concrete.
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NASA risks then saves lives of dummies in helicopters with external airbags