The fully instrumented Cutlass (129566) equipped with two vertical canard control surfaces used during the “Cornell Study” of 1957. Flown with and without those canards, the Cornell Aeronautical Laboratory was investigating “large uncontrolled motions of the airplane-post-stall-gyrations”. Tests proved the effectiveness of the canards in preventing them, but it was noted the same effect could have been achieved with enlarged rudder surfaces.
To intentionally and repeatedly do that with a Cutlass….
Photo: Jay Miller Collection.
Aviation Rapture 
The Cutlass may have been gutless but the pilots sure weren’t!
So true.