HELIOS: an advanced solar sail concept by NASA

HELIOS is an advanced solar sail concept being evaluated by NASA's Space Technology Mission Directorate (STMD). NASA's STMD rapidly develops, demonstrates, and infuses revolutionary, high-payoff technologies through transparent, collaborative partnerships, expanding the boundaries of the aerospace enterprise. http://www.nasa.gov/spacetech ____ From the video: NASA is designing a next-generation solar sail: HELIOS, or High-Performance Enabling Low-Cost Innovative Operational Heliogyro Solarsail.