bend doformer on spline

Hello,

For my airplane I want to build a propellor.
I started with a spline and a clone.
But as you can see at my reference image, the propellor needs some kind of a bend deformer.
In my case, it does not work, because there are not enough lines on the spline.
Is there some way to deforme the propellor?

Thanks again.

https://www.dropbox.com/sh/ahuk8q728tygfao/AABh4ufp0aWSNE4AQtbwVOyNa?dl=0