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Old 04-17-2006, 12:31 PM
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mesae
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Default RE: Aerodynamic tools, calculators and test links

ORIGINAL: GJM

Is anyone out there aware of a formula for calculating the number of G's a design would be able to pull. It would be helpful when trying to design a structure.

Thanks guys!

It's not as simple as your question seems to imply. You would do well to study aerodynamics from a textbook.

There was an interesting thread recently about someone trying to design an airplane to withstand an instantaneous pitch change to 85 degrees AOA at 100 mph or something like that. The drag coefficient topped out for his airfoil at 85 degrees, and was greater than the max lift coefficient at 100 mph. That's a relatively simple way to do it and would result in a very strong airframe, but perhaps heavier than necessary if the airplane never ever does walls at close to 100 mph. You might want try to find that thread.