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Cheranovski BICh-12
In 1931 - 1932 B. I. Cheranovski developed two other gliders based on the trapezoidal wing design of the BICh-8. The Cheranovski BICh-12 (Russian: Черановский БИЧ-12) experimental glider was similar to the BICh-11, but with greater wingspan, built in 1932 to test the influence of wing lengthening on the performance of flying wings. Unlike the prototype, these gliders had differentiated ailerons and elevator rudders.
The main objective of the construction of the BICh-12 was to test the influence of wing lengthening on the performance of a glider without tail.
The BICh-12 was conceived as a single-seater experimental glider built entirely of wood. The cantilever and high-set wing had a trapezoidal shape and a three-spar structure. This wing was conceived in three sections: a central one forming an integral part of the fuselage and the long wing consoles with rudders at the ends. The union of the consoles to the centroplane was made by means of some steel pieces.
The straight trailing edge featured control surfaces along the entire span, located on a bar on the soffit of the wing, just below the trailing edge. In the external part the ailerons were located and something more inside the elevator. In the inner part were the adjustable stabilizers on the ground.
The fuselage was covered with plywood. The landing gear was composed of two independent wheels and a tail skid.
The pilot was located in a closed cockpit forward, located on the longitudinal axis.
The Cheranovski BICh-12 participated in the IX National Sailing Competitions held in Koktebel.
Wingspan: 14.20 m
Length: 3.2 m
Height: 1.65 m
Wing area: 20.10 m²
Empty weight: 100 kg
Accommodation: 1

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