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   clacke (clacke@libranet.de)'s status on Monday, 19-Feb-2024 21:58:24 JST clacke

   in reply to

   @xela That's a very cool question and I got curious too. As it has been a year since the original article and the toroidal propeller has received some attention during the year, I was hoping someone would have looked into the reverse case, and they have!

   A couple of proper papers out there, but I settled for this chatty fellow who just took a propeller, put it in some wind and wrote down the numbers.

   It doesn't actually fare that well, and the comments speculate that this is because the toroidal propeller primarily addresses cavitation, which occurs when it's (1) in a liquid (2) propelling.

   I would still be interested to know if this or another wind turbine design could reduce noise compared to current designs!

   Robert Murray Smith #1846: "Further Testing Of The Toroidal Propeller For Wind Turbine Use"

   farside.link/invidious/watch?v…

   youtube.com/watch?v=wNktIb9hSA…

   @mtyka

   #ToroidalPropeller
   #ToroidalTurbine #WindPower

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   Ryan Castellucci :nonbinary_flag: (ryanc@infosec.exchange)'s status on Monday, 22-Jan-2024 14:24:46 JST Ryan Castellucci :nonbinary_flag:

   I was working on writing a big integer math implementation in C for doing elliptic curve math in Web Assembly.

   There is no arithmetic with carry in wasm, and I'm trying to decide whether it would be more efficient to use 30 bit limbs for more efficient carry when squaring or tripling numbers.

   It looks like it'll require an extra limb for multiply/square operations for 256/384 bit curves, and for all operations on 521 bit curves.