Thread: Discussion XC#10 in a series, Giant Icon?
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Old Jun 25, 2010, 11:47 AM
G Norsworthy is online now
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Master of the Wind
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United States, CA, San Jose
Joined Sep 2008
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Joe,

Thanks for the tips. Attached is the XFLR5 polar data for the thinned and decambered airfoils. It definitely favors the 12 inch root. I will run it again and check the dimensions to be sure there is no mistake. It does pay a bit in min sink.

I have a few other models for different days, inverted good day, inverted weak day, etc that need to be refined. I wouldn't want a plane that goes fast but never gets off the field on a weak day, or lands out on every low save. We have been spoiled on the last two outings and that is what I started looking at. I counted back this year and here is the weighting of conditions:

4 big day no inversion
1 blown out no flying
1 windy, low lift
1 inversion 500m cap low lift

I know from watching it the MXC has a little better run L/D than what I am flying now and I can only beat it by flying higher. What I want is something that will run and track better than the MXC and thermal out as well as #8, ideally without having to slim down the fuse.
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