At the beginning of the 1900th years Dr. George A. Spratt developed the theory simple in management of a balansirny wing, "Control Wing". Spratt also processed the first option of the plane Right who didn't fly in the beginning, and created design which appeared successful.
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"Control a wing" the plane very strongly differs from the planes designed in conditionally. Usually planes cope with the fixed wing элеронами and tail plumage for plane moving round its pivot-center.
"balansirny wing" which has "freely floating", easily controllable installation a wing of the plane provide a variable corner during flight. Each wing can be moved in opposite directions, providing controllability
. The design also differs optimization of sryvny characteristics.
To the death in 1934 Spratt built and tested various versions "Operated wing" of the plane. By 1936 Spratt, George G. Spratt's son, continued matter of the father in "Control Wing" the Concept and regularly flying its extralight "Control a wing" planes. He continued to be engaged in development of "Control Wing" vehicles for Convair and Bendiks. In the 1950th years Spratt developed a successful flying boat according to the version of this plane,
Spratt Control Wing Flying Boat - YouTube
Crew: one pilot and one passenger
Length: 17 foots 0 in (5.18 m)
Wingspan: 24 foots 0 in (7,32 m)
Growth: 5 foots 0 in (1,52 m)
The area covered: 96 foots 2 (8,9 m 2)
Empty weight: 500 pounds (226 kg)
Full weight: 1000 pounds (543 kg)
Engines: 1 × 800 Mercury turns the ship engine of 80 h.p. (60 kW)
Maximum speed: 98 miles / h (160 km/h)
Practical ceiling: 3000 foots (910 m)
Skoropodjemnost: 800 m / mines (4 m/s)