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It seems the only American aircraft designers that used elliptical wings that I can think of was Seversky/Republic -- at least that I can readily think of -- anybody know of any others?
Interesting design!The Berliner-Joyce XF3J-1
The years between WWI and WWII saw a fantastic range of wing configurations in an attempt to find the right combination for maximum performance.Interesting design!
It has confirmed a suspicion of mine -- we really didn't see much use in the elliptical wing.
When something looks nice you have to have a name for it.More accurately described as TWO ellipses but even so, the wings don't match mathematical ellipses. From this article: 'As British as Queen Victoria'
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I did not know that detail about Kartveli.It seems that the Europeans used the Elliptical or semi-elliptical in their designs more than U.S. designers. And I think that there is no coincidence that the P-35, P-43 and P-47 used that in their design, since the P-35 was designed by Alexander Kartveli, who studied aircraft design in Paris amd worked for French aircraft firms before coming to the states to work for Seversky.
There's a long list of wing designs that were tried in the golden age of flight.I did not know that detail about Kartveli.
Other than Berliner Joyce and Seversky/Kartveli, the only other elliptical winged designs that were produced seemed to be the Arup designs, the V-173, and XF5U that I know of. I assume there was some literature in the United States that covered elliptical wings as a possibility?
Other than Berliner Joyce and Seversky/Kartveli, the only other elliptical winged designs that were produced seemed to be the Arup designs, the V-173, and XF5U that I know of.
Ok, stupid question here...
Actually two:
1) suppose the Spitfire was designed with a Moderate Taper wing, how would this have effected it's performance?
2) would the Elliptical wing have been a benefit to the P-51 or a hinderance?
1) If done right, it wouldn't. Remember, the Spitfire had an elliptical wing, but not an elliptical lift distribution. A linear taper would be easier to produce, so the same effort would give more Spitfires.
2) Probably neither, but it would be harder to make.
I was looking at this image, courtesy of the Journal of Aeronautical History (paper 2013/02)...
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... and I've noticed that the spar was placed roughly where the 1/3 chord mark was with a longer and shorter ellipse ahead of and behind these points.
If one was to take an airfoil that was more like the P-51, would it produce a longer forward ellipse?
The years between WWI and WWII saw a fantastic range of wing configurations in an attempt to find the right combination for maximum performance.
It seems that the Europeans used the Elliptical or semi-elliptical in their designs more than U.S. designers. And I think that there is no coincidence that the P-35, P-43 and P-47 used that in their design, since the P-35 was designed by Alexander Kartveli, who studied aircraft design in Paris amd worked for French aircraft firms before coming to the states to work for Seversky.
Seversky became Republic, the P-47 was developed from the P-43, which in turn came from the P-35 and that was derived from the original Seversky SEV series...which had an elliptical design.
I think you have missed the point of Zipper's question.No. Prandtl worked out the elliptical platfom based on a spanwise lift distribution; the details of the airfoil weren't considered.
Monty Python never disappoints.
Same thing, however not all wings are the same. Most were twisted along the full length but some like the Fw 190 only had the twist inboard, the outer section of the wing was straight. (no twist)What is the difference of washout and twist on a wing?