Will Aldridge
Well-Known Member
I have read quite a few posts about Ribbletts book and his version of the the NACA airfoils.
My design uses the 65-215-415 airfoil. I picked it because it has a reasonable clmax (1.6) and fairly benign stall characteristics, as well as the max thickness fairly far aft. Even though the airfoil has a pretty good reputation on the Piper Cherokee the thought keeps surfacing in the back of my mind that maybe I better take a closer look at Ribbletts version. I don't even know the name for it so I would be obliged if someone could tell me what it is.
I would also appreciate it if someone could post some of the basic numbers for section such as cl max and so forth. If there is a substantial increase in performance I will probably buy the book so I can get the coordinates and use it in my design. If however there doesn't appear to be any (or negligible) benefit I will probably hold off.
Opinions welcome.
My design uses the 65-215-415 airfoil. I picked it because it has a reasonable clmax (1.6) and fairly benign stall characteristics, as well as the max thickness fairly far aft. Even though the airfoil has a pretty good reputation on the Piper Cherokee the thought keeps surfacing in the back of my mind that maybe I better take a closer look at Ribbletts version. I don't even know the name for it so I would be obliged if someone could tell me what it is.
I would also appreciate it if someone could post some of the basic numbers for section such as cl max and so forth. If there is a substantial increase in performance I will probably buy the book so I can get the coordinates and use it in my design. If however there doesn't appear to be any (or negligible) benefit I will probably hold off.
Opinions welcome.
