A 32-ft.-dia. deployable solar array wing that may one day feed power to advanced solar-electric propulsion (SEP) thrusters has passed three months of thermal-vacuum testing at NASA’s Plum Brook facility near Cleveland with good results. Under contract to NASA’s Glenn Research Center, ATK demonstrated its “MegaFlex” array wing, which is designed to generate as much as 40 kw in pairs, and to be scalable to 10 times that output. The technology may some day generate ...

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