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Design => Engineering board => Topic started by: phil c on February 19, 2013, 07:40:26 PM

Title: Re: Three Classic Airgoils
Post by: phil c on February 19, 2013, 07:40:26 PM

That thread seems to be closed, but after reading it I found something interesting.  I pasted the 632A015 airfoil into a scan copy of the MAN Nobler plans.  The plans show an airfoil that looks like the 63 foil, but has the highpoint pushed forward, may to 20-25%.  From about 50% chord it has about 2% reverse curve to the flap hinge.

I built the Top Flight early kit years ago and remember it as having a flat section from about 50% chord to the flap hinge.  It was possible to build it flat on a board with some rib shimming.

So the whole discussion is a bit confusing.  Seems like for many pre-CAD plans the plans were more the draftsman's interpretation than an exact set of plans.  Could be why I switched to building more from patterns and dimensions than trying to build on plans.  Foam wings help.

Phil C

Title: Re: Three Classic Airgoils
Post by: Tim Wescott on February 19, 2013, 10:53:06 PM

Is an airgoil anything like a gargoyle?

I've taken to building more with a tape measure than a plan, except for the parts with swoopy curves.