Quote:
Originally Posted by donquixote99
OK, I'll buy 40,000 rpm for a turbine, but geared way down for the rotors. You were not seeing (and in particular not hearing) a thing with supersonic rotors.
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It apparently had four electric motors to spin the props, on arms that were proportionally shorter than small scale quad copters.
The body (I guess you'd call it a fuselage) looked like this, except it had no side pods, only landings skids like helicopter. No windows, just four port holes in the lower front facing skin.
polar-lights_star-trek-galileo-shuttle_01.jpg
The rotors would have been spinning with the tips, or hoops, going at sub-sonic speeds.
I brought it up, because it must have had some kind of ultra light weight, high discharge, battery with pretty good range. It wasn't designed for forward speed, or a low drag co-efficient.