You have it the Gérin V-6E Varivol.
From the early days of aviation, manufacturers have attempted to reconcile the conflicting constraints: get a high cruising speed and lowest possible landing speed.
Among the various researchers have tried to solve this problem, Jacques Gerin, the French engineer Company Aviation advocated the wing span and variable surface. Wide open, giving the wing enough to slowly lift off and land, and the first work of this research led to a biplane that gave interesting results in the wind tunnel, before being accidentally destroyed in 1936 during the flight tests. It was the first aircraft named Varivol by J.Gérin.
This first experience was not exempt from defects in fact, the tail of the biplane design was not viable, since it was only short appendices, compared to the size of the wing. But the engineer was unwavering. He continued his quest student, from 1938 a new Varivol, the V-6 E, always designed on the same principle and intended to participate in the German Cup, one of the biggest competitions of speed at the time.
The new prototype experienced a turbulent gestation, since the construction was started in the early years of war, free zone in the Breguet workshops, so that the plane was eventually destroyed in part to the release!
However, he tried with success in 1946 with the blower Chalais-Meudon. It was estimated that the speed of the aircraft could reach 455 km / h at 2000 meters altitude ... and thanks to the device variable wing area, the landing would be at 92 km / h!
The aircraft was fitted with a Renault engine 6Q03 pushed to 275 hp. It seems that the aircraft was never registered.
The last Varivol was discovered in a barn, where the aircraft was based out of sight for 50 years!
You have control.