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Old June 26th 06, 05:30 AM posted to rec.aviation.homebuilt
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Default questions on multi-wing planforms


"cavelamb" wrote in message
k.net...
Awright.

There's more to aerodynamics than that covered by your philosophy.


Huh???


Area and airfoil are not really the right starting place for a new
and novel configuration.


Then where WOULD be the right starting place?



the dimensions of your wings...

First - learn about Reynolds number.

Okay

Very few of the published airfoils work well below about 3 meg RN.

What does that mean in regard to your choices?

Well, the two-foot chord wing is going to have to move pretty fast to make
3 meg RN.


How fast? None of these were really choices, just random numbers for
explanation. In other words, 4 10x1 wings = 40 sq ft. or 1 20x2 wing = 40
sq ft. The most important single factor in wing design appears to be square
feet. ??

The four-foot chord wing will have twice the RN from the start.

That's built into the RN equation. What's the relevance??

I have no argument here, I'm looking for info. So far, I've gotten some
pretty good references.

Gerry