Laddermill

Below are the documents of what was to be called “Laddermill”, from
http://www.speakerfactory.net/wind_old.htm :

From the drawing it seems that the bottom wings are deployed and pushed by the wind generating power by drag, while the top wings come down with an angle of attack leading to lift, which should rather make them go up, which would consequently cancel the rotation movement of the loop. Please some explains @dougselsam ?

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