Laser-Driven Light Sails Will Need to Billow Like Parachute: Study space science
first paper
“The intuition here is that a very tight sail, whether it’s on a sailboat or in space, is much more prone to tears,” Dr. Bargatin explained. Rather than a flat sheet, the authors suggest that a curved structure, roughly as deep as it is wide, would be most able to withstand the strain of the sail’s hyper-acceleration, a pull thousands of times that of Earth’s gravity.
“And we know that lightweight, pressurized containers should be spherical or cylindrical to avoid tears and cracks. Think of propane tanks or even fuel tanks on rockets.”, the researchers provided insights into how nanoscale patterning within the sail could most efficiently dissipate the heat that comes along with a laser beam a million times more powerful than the Sun.
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