Electric fan air output counter

AI Thread Summary
To determine the counter force generated by an electric fan, one effective method is to use a bathroom scale. By placing the fan on the scale and directing it upward while it operates, the thrust produced can be measured as an increase in downward force. The difference in the scale reading when the fan is on versus off will indicate the thrust. This approach allows for a practical assessment without delving into complex technological calculations. Understanding this thrust is essential for evaluating the fan's potential to lift an object, such as in a quadrotor design.
thebluser
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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)
 
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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.
 

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