Hello, i'm building an Hellcat 1,60 m span, and i need some advices for the wings.
I'm making foam wings, and i would like to have a plane that fly well at low speed.
What about these 2 options:

1) two differents airfoils. First one Naca 23018, zero degree incidence, and second one Naca 0016 (symmetrical) zero degree incidence

2) same airfoils Naca 23018, first one zero degree incidence, and second one washout 2 degree.

What do you think?

Thanks for your help.

I used the NACA 2417 for the root and tip airfoil for this 20 pound 50cc powered Macchi. There is no washout in the wing and the incidence is set at zero. The plane flies great and is very easy to land. Dan

thx for the answer.
And if i use 2 different airfolis?

First one Naca 2417, zero degree incidence, and second one Naca 0016 (symmetrical) zero degree incidence? Does it become more slow and easy to land?

fillo, I never used different airfoil and washout. The best way to avoid stalls when landing is to land faster. Dan