RE: Propeller parameters

"Jon Berndt" <[email protected]>
Newsgroups gmane.games.flightgear.flightmodel
Message-ID <[email protected]>
> I have an understanding of the IXX, diameter, numblades etc...   What
> I do not understand is what follows
> 
> C_THRUST   11 1
>   0.0  0.0936
>   0.1  0.0927
>   0.2  0.0918
>   0.3  0.0909
>   0.4  0.0828
>   0.5  0.0738
>   0.6  0.0630
>   0.7  0.0490
>   0.8  0.0360
>   0.9  0.0200
>   1.0  0.0040
>   C_POWER   11 1
>   0.0  0.0594
>   0.1  0.0585
>   0.2  0.0576
>   0.3  0.0558
>   0.4  0.0540
>   0.5  0.0522
>   0.6  0.0495
>   0.7  0.0432
>   0.8  0.0342
>   0.9  0.0225
>   1.0  0.0090
> 
> To me it looks like it might be the power profile of the engine, but I
> would like a better clarfication about it if its possible.

These are the thrust and power coefficients for the propeller. Try this:

http://naca.larc.nasa.gov/reports/1938/naca-report-640/

That should help. Let me know if it doesn't.

Jon


--

Project Coordinator
JSBSim Flight Dynamics Model
http://www.jsbsim.org
 

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