The ouroboros—the ancient symbol of a snake swallowing its own tail—generally represents infinity and the natural, endless cycles of the universe.
But for members of Northeastern’s Students for the Exploration and Development of Space club, the ouroboros-like design of their moon-destined robot is merely practical—the robot can slither like a desert snake across the loose soil of the moon and, when needed, connect head-to-tail to form a wheel that can tumble down the steep slopes of the moon’s craters.
Any metaphors for the unity of the solar system or the orbit of the moon around the Earth are happy coincidences.
The student-led team of 13 undergraduates recently won an award from NASA’s BIG Idea Challenge to further develop its design, which fulfilled this year’s competition requirements for robots that can traverse extreme terrains, such as the enormous craters on the moon’s south pole.
“We want to explore the Shackleton crater, which is massive—20 kilometers in diameter—because it might contain water,” says Matt Schroeter, the undergraduate bioengineering student who is leading the team.
“But if you want to send a robot into that crater, it needs to be really energy efficient because there’s no sunlight, no potential for solar energy.”
The tumbling-wheel design allows gravity to do most of the work on the way down to the base of the crater, saving most of the robot’s energy for the journey back. Once the robot is on level ground, it can unwind itself and resume slithering through the soil in search of water.
Continue reading… “This snake-like robot will search for water on the moon”