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| From | Christopher Howard <christopher@librehacker.com> |
| Newsgroups | sci.physics |
| Subject | Re: force generated by propeller? |
| Date | Mon, 02 Feb 2026 07:44:02 -0900 |
| Organization | A noiseless patient Spider |
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Jim Pennino <jimp@gonzo.specsol.net> writes:
>
> There is a rule of thumb that a decent propeller makes about 20 lbs
> thrust per 10 HP.
Okay, thank you, that is helpful to know.
>
> Alternately Google "how to calculate propeller thrust".
I don't use Google search, but DDG gives some results that are a bit
difficult to wade through. The propeller thrust calculator page gives
these equations:
Velocity = Propeller Pitch * RPM * (1/1056)
Thrust = (2 * Efficiency * Power * 746)
/ (Velocity * Propeller Diameter * 0.0254)
with the Power in watts and the pitch and diameter in inches. That
doesn't sound too complicated to calculate.
--
Christopher Howard
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force generated by propeller? Christopher Howard <christopher@librehacker.com> - 2026-01-30 12:17 -0900
Re: force generated by propeller? Jim Pennino <jimp@gonzo.specsol.net> - 2026-01-30 15:57 -0800
Re: force generated by propeller? Christopher Howard <christopher@librehacker.com> - 2026-02-02 07:44 -0900
Re: force generated by propeller? Jim Pennino <jimp@gonzo.specsol.net> - 2026-02-02 09:09 -0800
Re: force generated by propeller? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2026-02-01 06:38 +0100
Re: force generated by propeller? Christopher Howard <christopher@librehacker.com> - 2026-02-02 07:36 -0900
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