Not being an aerodynamicist, I listen to the learned opinions of others. While stall strips and AOA are vital, a couple of other items seem reasonable. Perhaps Marv can supply the pix. My confuser is being resurrected, and has minimal function at the moment.

1. Winglets. These extend the wingspan, and would thereby have some salutary effect on stall speed due to increased effective wing area.

2. flap fences. These function effectively as winglets on the flaps. Mine are placed in the streamline when retracted, so as to not increase drag. But when the flaps are deployed, we expect them to act as winglets in this high lift situation (of the flap) trapping more air and reducing dirty stall speed.

3. Ventral fin. This is a suggestion by Jack Webb. Apparently when the throttle is reduced, the braking effect of the prop disc destabilized the airplane, making it want to turn sideways. A ventral fin adds lateral area aft of the center of lift, stabilizing this tendency.

In a stall, a dorsal fin would likely be blanked. But a ventral fin will not be blanked. This ought to increase the ability to recover from a stall. It may also increase spin recovery, but I'm not about to explore that part of the envelope.

Ted Noel
L-IVP at the airport, not yet flown.

----------------------------------------
           The Bible Only
    If the Bible doesn't teach it,
          neither will we.
      http://www.bibleonly.org
Home of "I Want to be Left Behind," the
     biblical story of end-times.