--- In Indoor_Construction_at_yahoogroups.com, "markdrela" <drela@...>
wrote:
> I assume you mean 0.68, not 7.68.
Typo...I actually meant .768 - even worse! Changing the velocity and
then adjusting the cord back to the same size (after it produces a
new "optimal" prop) doesn't seem to change the Cl much.
After playing around a bit, I think I found the (or at least "a")
problem: there is a small set of airfoils (with a specified Re) to
choose from. I picked a 6% arc airfoil with a Re of 50,000 - the
closest thing it had to an indoor airfoil. But I think the relatively
high Re might be skewing things. At least I think this is the case
because if I pick a different airfoil with an even higher Re, the Cl
changes significantly - even though it seems to be calculating Re for
the resulting prop.
Received on Sun Aug 27 2006 - 21:28:55 CEST
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:44 CET