Technician Marshall MacCready carefully lays a panel of solar cells into place on a wing section of the Helios Prototype flying wing at AeroVironment's Design Development Center in Simi Valley, Calif.
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Technician Marshall MacCready carefully lays a panel of solar cells into place on a wing section of the Helios Prototype flying wing at AeroVironment’s Design Development Center in Simi Valley, Calif. More than 1,800 panels containing some 64,000 bi-facial cells, fabricated by SunPower, Inc., of Sunnyvale, Calif., have been installed on the solar-powered aircraft to provide electricity to its 14 motors and operating systems.September 18, 2000NASA Photo / Tom Tschida› Helios Project Description