m_blt, would you allow me to add a few things to what you propose?
I changed your scale to X scale and added a Y scale.
This makes it possible to shorten the chord of a profile and to thicken it, especially when you get closer to the axis.
Hello,
No problem, the forum is made for that: download, correct, adapt, modify the proposals of its members.
Question at 1€: are the aerodynamic properties of the profile preserved if its thickness/chord ratio is modified?
Hello,
Thank you for your answer.
In theory, the propellers should be wide at the root and taper towards the tip.
In practice, for a question of resistance (even if I don't really believe in it after traction calculations), we thicken it from the axis of the propeller and maybe also because of the design of the hub and as the linear speeds are lower, the closer we get to the axis that it doesn't harm their efficiency too much.
So you see, I don't know more than that, but the reality of our propellers is this, although we see planes appear with propellers that are completely different from the ones we knew.
For the publication of what I was telling you, I wanted to do something clean and complete so not tomorrow 