1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Electric fan air output counter

  1. Dec 1, 2012 #1
    hey, so let's say i have an electric fan with something like 2, 1/4 in. blades, 60 rpm, and 10 cm diameter and i want to attach it to an object and turn it on so it would fly (like a quadrotor)
    before i try, i want to know if it is possible by knowing how much counter force can it make on the object (exclude all technological stuff). so my general question is: how can i know how much counter force can an electric fan make with knowing its detailes?(like the one i described or even more detailes)
  2. jcsd
  3. Dec 3, 2012 #2


    User Avatar
    Gold Member

    You might put the fan on a bathroom scale, point it exactly upward, and turn it on. The thrust of the fan would be shown as an increase downward force on the scale. Just read the difference between fan on and fan off.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook