Van's comment, etc
Some really good comments re fixed pitch, particularly Mr. Van G's on the front page with Propman and others in the thread.
I have used Javaprop to do light a/c prop design simulations for many years as a hobby. Van's analysis is totally in sync with some of the results I have produced with Javaprop. The program has shown that a prop design similar to the one in question will be maybe 70 or 80 percent stalled at static. This will reduce loading and static thrust as well as increase static RPM. I have also seen design examples of a prop loading up with increasing forward speed and a subsequent small drop in RPM as speed increases, just as in a previous comment by dart11. So its nice to know that the wiggly lines produced in Javaprop can be real in the real world.
Once upon a time, more than half a century ago, I competed in model a/c speed contests. Making the blades thinner than stock would = faster up a point, then a further thinning would result in a drastic loss of speed. Propeller flutter may be more common than is thought.
A very flexible prop is bound to flutter at some point with an increase in flex or speed if special attention is not given to increasing torsional stiffness or forward load the section CG. It is SOP with helicopter rotor blades to weight the leading edge, for example. For light a/c wood props, metal edging can help serve this function. So, yes, Propman keyed in on flutter. He may have something for you.