Army researchers and visiting scientists are working on two avenues of research that could lead to robotic muscles that contract and move like biological ones. This would allow the construction of more quiet robots as well as drastically improve the efficiency and form of prosthetic devices and exoskeletons.
Remember that LS3 Mule robot the Marines tested but then decided against deploying because it was just too noisy for use on the frontlines? That was sort of crazy, right? But Army researchers are doing a large amount of work to make quiet, robotic muscles to reinforce soldiers, exoskeletons, and robots of the future.