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Plotting Power and Torque Curves.

Old 10-09-2015, 01:52 PM
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Default Plotting Power and Torque Curves.

The table below is from Gordon Cornell's book. Using the P and K factors given and the RPM figures a Power versus RPM, and Torque versus RPM curve can be easily drawn. The propeller sizes do go up to 12x6" so the curves for reasonably large diesels can be examined. I believe that this Table is used by engine testers whose work in regularly published in ACLN and The Aeromodeller.


The equations for each of the data points are:

BHP=P x RPM^3

OR

TORQUE = K x RPM^2


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Last edited by qazimoto; 10-09-2015 at 01:55 PM.
Old 10-10-2015, 02:01 AM
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APC also have calculated values for their props here; https://www.apcprop.com/v/PERFILES_W...tDatafiles.asp
Old 10-10-2015, 03:34 PM
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Originally Posted by Mr Cox
APC also have calculated values for their props here; https://www.apcprop.com/v/PERFILES_W...tDatafiles.asp
Thanks Mr Cox, that's excellent and very useful information.

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