Science, Space and Technology News 2024
SuperLimbs, a system of wearable robotic limbs built by MIT engineers, is designed to physically support an astronaut and lift them back on their feet after a fall, helping them conserve energy for other essential tasks. Pictured, from left, is Sang-Yoep Lee, Harry Asada, and Erik Ballesteros. Credits: Jennifer Chu’s SuperLimbs project aims to improve astronaut mobility on the moon with robotic limbs that help them stand after falls, enhancing safety and efficiency for future lunar missions.
“During the Apollo era, when astronauts would fall, 80 percent of the time it was when they were doing excavation or some sort of job with a tool,” says team member and MIT doctoral student Erik Ballesteros. “The Artemis missions will really focus on construction and excavation, so the risk of falling is much higher. We think that SuperLimbs can help them recover so they can be more productive, and extend their EVAs.
“In communications with NASA, we learned that this issue of falling on the moon is a serious risk,” Asada says. “We realized that we could make some modifications to our design to help astronauts recover from falls and carry on with their work.” The researchers then looked at how the volunteers’ attempts to stand changed when their movements were constricted, similar to the way astronauts’ movements are limited by the bulk of their spacesuits. The team built a suit to mimic the stiffness of traditional spacesuits, and had volunteers don the suit before again attempting to stand up from various fallen positions. The volunteers’ sequence of movements was similar, though required much more effort compared to their unencumbered attempts.
Overall, the volunteers were able to stand stably with much less effort when assisted by the robot, compared to when they tried to stand alone while wearing the bulky suit.
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