Oli,
I am having some issues with figuring out the correct parameters for a Flap calculation and I was wondering if you could help?
Here are the parameters that I have tried:


The issue I am having is selecting the correct values for Rs +/- and Rc +/-
I believe that Rc + should be 0 deg and Rc- should be 60 deg, but this yields a strange diagram in the excel program.
The flap uses a live hing and the hing point is on the bottom skin of the wing.
I drew up the surface in Autocad to visually verify, and it should work, can you help?