ATK has tested a 32-ft.-dia. deployable solar array that may one day feed power to advanced solar-electric propulsion (SEP) thrusters as NASA sends cargo into deep space to await human explorers. Under contract to the Glenn Research Center, the company demonstrated its “MegaFlex” arrays, which can generate as much as 40 kw in pairs, and are designed to be scalable to 10 times that output. In thermal-vacuum tests at Glenn, the arrays were evaluated for unassisted deployment at ...

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