Fan experiments

thingiverse

I tried to make some fan experiments after watching Major Hardware's videos. I thought it would be neat to use AI to make them but decided I wasn't that invested in it so just made a few that I thought might work. I'm not a learned fan engineer obviously so these are just my off the cuff tries at making a fan. The plain fan started out just being like a simple 45 from top to bottom. I thought it might be good to make the leading edge like a wing so that there might be a little low pressure on top and nigh pressure on bottom to help pull. The scoop fan I made to try to do a double 45. 45 downward and a 45 inward since centrifugal forces would cause the air to be slung outwards so a second 45 to make that air that is slung outward to be directed downwards. I sort of made it with shingles and sort of rounded the blade so that it is more attack in the center and less attack at the other edge. Again, i made a bigger leading edge for the sort of wing low pressure high pressure lift effect to help pull the air down. I figure this fan might be the better one (but I haven't tested it). The fourtyfive fan I tried just making the double 45 without rounding or any leading edge. I think this one is more of a double fourty five but since there is no adjusted attack, or leading edge I'm not sure it would be any better than the scoop fan. I thought it might be good to smooth the blades but then thought that the dimple affect might make it more efficient and perhaps quieter so I left them as-is. Anyway, that's what it is in my mind. Whether any of them work at all it's probably good to test and leave to the professionals. I also tried doubling the blades so you'll see the same ones again but with double the blades. I may try to test these to see what results I get and perhaps try making others but this is what I've tried so far. To do it right I should probably invest a lot of time on it and test and optimize and whatnot but I'm not really all that wanting to invest a lot of time. It would be neat to use a highspeed camera and some smoke to see what the air does as a blade passes by. I should have probably written an scad or javascript program to make these but again wasn't wanting to invest that much time. However, I probably ended up wasting more time doing it the way I did it so whatever. Probably should have.