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What shape propeller with a large surface are, would be best propelled from the wind from behind and from the side as well as the front while facing the sun? I am thinking a pinwheel, but maybe there is a better design? enter image description here

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    $\begingroup$ A vertical axis with something like a barrel with blades. $\endgroup$ Aug 25 '20 at 18:51
  • $\begingroup$ Check out Savonius rotor designs. In fact some are shown in the answer... $\endgroup$
    – Solar Mike
    Aug 25 '20 at 19:05
  • $\begingroup$ This looks like a 'Naive design' question. Such questions are excessively broad and are therefore not a good fit for our format. See if you can edit your question to make it specific and answerable. $\endgroup$
    – Wasabi
    Aug 26 '20 at 1:22
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You are looking for a “vertical axis wind turbine”.

See below for some design examples:

enter image description here

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