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Evra Propeller question
Posted: Fri May 06, 2011 10:58 pm
by ChampChump
After pages and pages of googling, I give up. Does anyone understand Evra numbers?
The D11 28 1B - EASA says it's 176cm and has a pitch angle of 133.
But where are the numbers we know and love?
Just wondering....'cos I'm thick.
Posted: Sat May 07, 2011 9:25 am
by R Perry
The 176cm is the diameter and I believe the "pitch angle" is not an angle but merely the pitch in cm. So I think the prop would be 69 1/4 inches diameter with a 52 1/4 inches pitch
Posted: Sat May 07, 2011 9:43 pm
by ChampChump
Thanks for that. That was about where we worked it out to today, but at first glance it made no sense - quite possibly because I'd had a moment of numerical dyslexia...and not noticed when I posted the right numbers on here either
Still cannot see why Evra cloaks all this in a special Gallic code. Because they can, I suppose.
Thanks again.