Travis replied to me: > Sailing only works when you have two different moving fluids.
Hello Travis, that is certainly the case for sailing anywhere close to the wind. But some early balloons had sails -- was that just a misunderstanding of the physics? http://selfinger.com/fp/art/andree.htm Consider this ASCII art: / Sail / Wind -> O Center of mass / / Would this contragrav craft move in the direction of the wind, or at a slight angle? Also, would it start to rotate around its axis? With time, the craft would probably accelerate to the speed of the wind, and it would be at rest relative to the air around it, if the speed and direction of the wind is constant. What happens when there are gusts? Regards, Onno _______________________________________________ GurpsNet-L mailing list <[email protected]> http://mail.sjgames.com/mailman/listinfo/gurpsnet-l
