5 ms·

Leading edge bumps has been done! - https://en.wikipedia.org/wiki/Tubercle_effect https://en.wikipedia.org/wiki/Tubercle_effect - https://arc.aiaa.org/doi/abs

• samstave 3y ago
  curious ; are you invalidating, or validating my comment?
  • all2 3y ago
    I was providing information in case you didn't know this stuff was out there. If you're going to do some CFM, it might be useful to see what prior art there is.
    • samstave 3y ago
      Thank you so much, super surprised that info is out there along the same thought lines!! I really think there is something here
• samstave 3y ago
  I have a really weird hypotho So we look at the actions of the faster currents as the flipper cuts through, and where does the current flow, such that you can direct micro currents to the other bumps and managing overall flow... such that certain bumps 'feed' others... and if they are maleable, and you can manage each...
  • all2 3y ago
    Sooo, in terms of malleable wing sections there's some neat research done by MIT that might be interesting to you [0]. There's also some new work that pops up when I was searching for [0]; apparently the same researchers have been working on this idea for some time [1]. The idea is simple in concept, produce small building blocks and assemble large shapes from those building blocks. If you design your building blocks right and assemble them correctly you can achieve some pretty impressive macro properties, including compliant mechanisms [2]. And then there's this 3D printer I stumbled across yesterday that prints on successive sheets of carbon fiber [3]. This could be relevant for the manufacturing process (they currently use injection molding in [1]?) as it would offer composite material strengths at a high speed (they claim 17 seconds for a relatively complex part). [0] https://news.mit.edu/2016/morphing-airplane-wing-design-1103 https://news.mit.edu/2016/morphing-airplane-wing-design-1103 [1] https://news.mit.edu/2019/engineers-demonstrate-lighter-flexible-airplane-wing-0401 https://news.mit.edu/2019/engineers-demonstrate-lighter-flex... [2] https://www.science.org/doi/10.1126/science.1240889 https://www.science.org/doi/10.1126/science.1240889 [3] https://www.youtube.com/watch?v=0BKzikfssTM https://www.youtube.com/watch?v=0BKzikfssTM
    • samstave 3y ago
      Wonderful, thank you - so when I said that I have a really weird design idea ;; - The best arch for dividing a sphere is a hexagon. The idea for dimpling comes from the honeycomb sandwich design patterns we have for use in structurally solid airplane components, coupled with a micro design for stem-cell research from someone from University of San Francisco.... She was building a micro printed 'injector' where she would inject proteins to various stem cell pods. She would then measure the various cells to see how she could get them to express in a desired outcome.... The hex is from some top secret shit I saw back in the day... SO... I am thinking that one can util the hex layout and by slurping/pumping vacuum or hyrdo, one can manipulate the dimples on an interface.. on a toroidal propeller in water, pressure is equalized in a certain way to allow live dynamic prop deformations.... In a helo blade it has to be gas activated. but the material overlay has to be able to handle millions of deformations on an individual cell or a neighborhood of cells to reduce piping. leading edge bumps inflate on way out and release to tailing edge bumps on exit...
      • samstave 3y ago
        What are the vortexes created by the cells of a buterflies wings. that is how they manage vortex. its through complimentary vorticies