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Airfoil->Spline->Smooth Matlab

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Old   September 4, 2012, 11:10
Default Airfoil->Spline->Smooth Matlab
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Pontevedra
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Hello everyone, Iīm working with Matlab to draw airfoils. I use splines to improve the visualization, but in the leading edge I have problems, I want to have a curve more smoother, like a circle in the leading edge.

Anybody knows other method to join the points of an airfoil?

Anybody knows a smooth method to use whit airfoils?

In the photo, you can see my problem. I use cubic spline (natural conditions).

Thank you, and sorry for my English.
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Old   September 4, 2012, 11:25
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Filippo Maria Denaro
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I think you did something wrong in the spline....
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Old   September 4, 2012, 11:48
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Thank you FMDenaro for your answer. I have two splines, one for the upper surface and another for the lower surface. I canīt use an spline to join all the points.
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Old   September 4, 2012, 11:58
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Originally Posted by Giroscopo View Post
Thank you FMDenaro for your answer. I have two splines, one for the upper surface and another for the lower surface. I canīt use an spline to join all the points.

why not? you define the law x=x(s), y=y(s) with s a natural parameter ...
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