Propeller
The design of the propeller is pretty traditional to the aircraft of
their day. It had a sort of a graceful "S" look to it. If you could
draw a very shallow S, it had a very nice curve. They were very
slow-turning propellers. Today we have these little toothpick props
that turn up thousands of rpm. But back then a slow-moving propeller
was much more efficient. And the propeller [was] made of a variety
of woods such as mahogany and birch. A very efficient propeller. The
only drawback with the Demoiselle was if you notice where the
pilot sits in some of the other photos, you'll see how close the
propeller is to the pilot's feet, which is something you always are
aware of when you're flying one of these little airplanes.