I'm not sure if its the right place, I have a problem with a flying thingy, and you like flying thingies, don't you?

I will be trying to add some means of propulsion to my friend's styrofoam plane (3ft wingspan, 2-3ft length). I have quite a few computer fans lying around, so I decided to add four (two on each side of the hull) 1W, 2x2 inch fans. Now you don't see a lot of propeller planes with their propellers ducted (well, maybe except for jet engines, but they are a different animal), do you? Now, I heard that ducting equals more efficiency and thrust.

So should I snip the ducting off or let it stay on? I can provide more information if you need it. big ol fanboye

  • $\begingroup$ I have a doubt you are going to get any measurable thrust from 4 1W computer fans, shroud or not. $\endgroup$
    – Ron Beyer
    Jul 27, 2018 at 0:27
  • $\begingroup$ Ducting does improve efficiency, but this is most notably observed in high performance applications. There is no way ducting a computer fan will make up for the ducts weight. Especially if you are thinking about using the case the fans came in as your duct. $\endgroup$
    – YAHsaves
    Jul 27, 2018 at 2:22
  • $\begingroup$ @RonBeyer What if I stick a rotor (the spinning thing) across the motots shaft, using the motr to make it spin? $\endgroup$ Jul 27, 2018 at 4:51
  • $\begingroup$ @RonBeyer: I wouldn't be so sure. $\endgroup$ Jul 27, 2018 at 13:16
  • $\begingroup$ Add a picture. Those fans can be rather heavy and draw a lot of current. $\endgroup$
    – copper.hat
    Jul 29, 2018 at 6:26