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please show how to get lift curve slope in aerospace engineering. C_(L alpha) please show work...

please show how to get lift curve slope in aerospace engineering. C_(L alpha) please show work and be detailed.. will give thimbs up
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Answer #1

The lift co-efficient of an airfoil varies as follows:

In order to obtain the slope of lift curve slope first perform the wind-tunnel experiment having the airfoil in the test section at various angles of attacks and obtaining the lift coefficient and plotting them simultaneously.

Now that we have obtained a graph as above we determine its slope by taking two points before stall and finding the slope manually:

This gives the lift curve slope

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