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  • (cur | prev) 16:37, 28 September 2013Ben (Talk | contribs). . (317 bytes) (+317). . (Halley Rendezvous heliogyro solar sail. Spinning sail with long, thin blades. The blades are tilted like those of a helicopter to steer the vessel. Created 1999 by Benjamin L. Diedrich using POVRay, updated in 2013. Source file: File:Heliogyr.pov ...)