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Doug Cronkhite -> RE: OH MY GOD!!!!! Chip Hyde's New ARFs are COMING NEXT MONTH!!!!!!! (11/13/2003 11:43 PM)
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quote:
ORIGINAL: bla bla
Screeeetchhhh....... Hit the breaks!!!!!
I've just been over to PL Prod Checking out the F3A version.
Ahhhh, hold on a second here.
One great thing about biplanes is the ability to use real thin aerofoils... Chip F3A DV has 'em so does his TOC Ultimate... but this ARF normal looking, fat-ass aerofoil.
Hold on a second , I need to rethink my position here.
Feed back needed.
OK.. first off.. tell me what the benefit is from using a thin airfoil?
I'll tell you.. The only difference between a thick and thin airfoil is the rate of flow separation. Lift and drag curves are almost identical. There are a couple factors which can change this such as leading edge shape, but mostly that's it. So the F3A and TOC airplanes will snap a bit quicker when you want them to. That's it.
The thicker airfoils on the 3D version of the DV were done for 1 reason.. to eliminate the flying wires required on the F3A version. Chip didn't think the average sport pilot would want to deal with them. In fattening up the airfoils, Chip also got the side benefit of more gentle accelerated stall characteristics. This is a POSITIVE thing for 3D flying.
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