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4 years ago
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This question does not appear to be about aviation, within the scope defined in the
I've got a
15470 brushless 35kw motor from China
How do I find the smallest 3-blade propeller I can use for this motor?
Here are it's specs,
Max Power: 35KW
Max Amp: 400A
Max RPM: 8500
Max Volt: 120v
I've looked into eCalc but it's for determining power / thrust, etc and not finding prop size.
Any help would be appreciated!
May 9, 2019 at 20:16
You need the largest prop that keeps the tip speed below about .9 Mach, roughly 1000 ft/sec, so you want the largest propeller than can operate at that RPM at .9 mach.
Here's a tip speed calculator for larger propellers that should suffice.
May 9, 2019 at 20:34
John K John K
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