Scientists at Vanderbilt University have adapted a miniaturized rocket motor from space to power a stronger, faster prosthetic arm here on Earth.
Actually, the power is generated by what amounts to an advanced steam engine. It contains hydrogen peroxide and a catalyst that causes it to burn at 450 fahrenheit, producing steam. NASA uses the same principle to scoot the space shuttle around in orbit.
It's "roughly the size of a pencil" and provides enough energy to operate the prosthetic for up to 18 hours. The prototype arm also weighs less because the motor eliminates the need … Read more