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Originally Posted by Guyute
what do you think the up force would be needed to lift a 130lb robot in the air 12' using a 4.5' propeller. i have an idea that it might be 130lbs of force, but wouldn't the size of propellers matter. if there are any AE's out there could you give me a bit more info...
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most engines out there aren't capable of lifting even themselves straight up. in order to build a flying robot, you would have to use ever shred of power to lift it, leaving none availble for things like, oh, drivetrains, ball grabbers, etc.
I think the idea of watching a robot fly up and grab the bar is cool, but I doubt that it is possible with the motors and power supplies we are allowed to use.
If you were going to try that, I would suggest using a larger propeller diameter.