Claim is 20% reduction of CO2 emissions- and of course that depends- on a lot of things. Japanese are installing them on their K Line.
On a sunny day (Thu, 21 Jul 2022 09:56:54 -0700 (PDT)) it happened Fred Bloggs snipped-for-privacy@gmail.com wrote in snipped-for-privacy@googlegroups.com:
Funny, was just on one of the German info channels yesterday on Astra 1 satellite Also these rotating round colums (forgot the name) to aid ship propulsion. ZDF-info? Or cable 1 info? or that other one (there are 3 I know about and frequently watch).
On a sunny day (Thu, 21 Jul 2022 18:39:20 -0700 (PDT)) it happened Anthony William Sloman snipped-for-privacy@ieee.org wrote in snipped-for-privacy@googlegroups.com:
Thanks, yes those. There seem to be ferries too that use those. to save fuel.
The video looks fake to me. And why is the sail doing aerobatics?
The short blurp mentions something about perpetually doing figure 8 maneuvers to increase the overall performance.
The full answer is : It's complicated.
Might have something to do with this:
On a sunny day (Fri, 22 Jul 2022 08:32:22 -0700) it happened snipped-for-privacy@highlandsniptechnology.com wrote in snipped-for-privacy@4ax.com:
It is doing the aerobatics to go and stay aloft. You should have seen that TV program... Was demonstrated there by hand flying a kite like that.
Makes sense. The air doesn't change speed instantaneously, so always moving into fresh wind would get you more momentum overall.
Cheers
Phil Hobbs
One bunch of lunatics tried generating power with actual kites spooled out by winches that turned generators.
Popular lifestyle:
1: Invent something really loopy 2: Fake a bunch if pics and vids and a glitzy web site 3: Raise a lot of money 4: Enjoy life for a couple of years 5: goto 1
Was wondering how this originated. Turns out it was developed by Airbus.
Some small fraction of goofy ideas do work out.
Totally. Sailing ships? Who ever thought of anything as stupid as that? ;)
Cheers
Phil Hobbs
Some ideas just keep coming back, like adding sails to diesel ships, airships, home windmills, flying cars, jet packs.
There's an impedance-match problem too, mismatch of ship velocity vs wind velocity. Windmills have variable-pitch blades.
lørdag den 23. juli 2022 kl. 23.01.46 UTC+2 skrev snipped-for-privacy@highlandsniptechnology.com:
it is also (mostly?) a safety feature so they can feather the blades in high winds
It gets the wind-catching gizmo up to an altitude where winds are more reliable than near ground level. If you could tap the more-or-less permanent cyclone around the South Pole, that'd be really something.
Because it's a circular wind, any energy you miss on pass 1, is still there on the next cycle...
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