Scott Speirer wrote:

I have been trying to read an auto-translated version of a website of a French
company manufacturing propellers.  The company name is "ARPLAST Helice sarl".  On the
specs for one prop, is reads:

Power/blade: 35 Cv @ 2600 T/Mn

Engine: 75/100 Cv (Rotax 912/912 S/914/618 + R 2.62) or equivalent

For the power/blade, I can guess that "T/Mn" means "rpm", and I assume the "Cv" is
some unit of power.  In metric units power would usually be in kilowatts.

Does anyone know what "Cv" means?

Scott

Cha vo or something like that.... as in    du cha vo Citroen. 2 HP

75 to 100 HP is about right for a Rotax 912
If it were in Kw they would say Kw over there.

BTW Scott you can still use that 2.85 if you go to wider  or
more blades with your limited prop diameter. You will  still get more 
static thrust because the engine will be making more power at higher 
RPMs. Here is a low diameter wide blade air boat prop for a high power 
engine that illustrates the point. This 550 ci Cadilac engine runs at 3000 RPM
and the prop is made by Sensinich(s?).

Paul Lamar
 
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