Numerical integration of second moment of area for given data

Hello everyone,

I am having troubles at calculating second moment of area, i have data for a shape (Airfoil) in an Excel file with two columns (x and y axis).

The Profile looks like this :

And the equation for calculating second moment of area is this double integral :

I've tried using Trapz but i still can't find the right way.

I would apreciate any hints or solutions. Thanks in advance.

Answer 1

[Torsten]

x and y data describe the curves of the upper and lower profile ?

https://math.stackexchange.com/questions/3126310/calculating-second-moment-of-area-of-naca-aerofoils

[Iheb Melki]

x describes the cord line (repeated 2 times).

The first half of y describes the upper profile and the second half describes the lower profile.

I am doing this to be able import the points in inventor

[Torsten]

I am doing this to be able import the points in inventor

What is "this" ? Determine the second order moment ?