S-35 Sikorsky s-35 Background



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Rene Fonck and Igor Sikorsky inspect S-35 fuselage


S-35 fuselage details


S-35 tail section construction details

The S-35 had self-compensating rudders, so the plane could fly level with any two of its three engines in operation. The wing structure was made up entirely of duralumin, with the main spar built up to I-section by four duralumin angles, riveted to the central web of flat sheet duralumin. These ribs were formed from light sheet duralumin channels and angles, and high tensile strength tie rods were used in the internal drift bracing system.


The ailerons were hinged on an auxiliary spar behind the main spar. They tapered at the tip and blended into the
wing at point of attachment. Tail surfaces were built similar to the construction of the wings and were fabric covered. The stabilizer was adjustable for trim during flight, while the landing gear, of the divided axle type, was made entirely of steel and bolted together; the wheel spread of the gear was 18 ft. 4 in.

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