Hi Steve...

In viewing the video from this September's autogyro fly-in in Martinsville, it appears that the multi-bladed gyros do indeed fly more smoothly. The first day provided significant gusts aloft and the multi-blade gyros appear to handle those conditions very smoothly.

However, Leon Wolf's Whistler really bored through the air at great speed and didn't seem much affected either. It may be that the Whistler's wings help to provide stability.

Certainly, a teetering two blade rotor would seem to be less smooth simply because the two blades (increased coupled mass) have to move together to accomodate bumps, etc. I wonder how well a two-blade, flapping rotor would work?

Bill