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Supermarine S6

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Description

Supermarine S.6 and 6.A

Dimensions:
Span 30 ft.(9,14m) length overall 28 ft. 8 in.(8,74m) height 12 ft.(3,66m) floats 22 ft.(6,71m) wing cord 5 ft. 8 in.(1,73m) wing area 145 sq. ft. 3 in.(13.5m2) float track 7 ft. 6 in.(2,29)

Weights: loaded 5,717 lb.(2593kg) Empty 4,471 lb.(2028kg)

Performance: Maximum speed 358 m.p.h.(576km/h) at 5,000 ft. Landing speed 93 m.p.h.

Power plant: for 1929 contest. 1,900 hp Rolls-Royce R. Propeller 8 ft. 6 in in.(2,59m)

The S.6’s N247 and N228 were built for the 1929 Schneider Trophy contest. They resembled the earlier S.5’s except for the engine cowling, but they were larger and heavier seaplanes and were powered by Rolls-Royce R engines. The wings were constructed of metal, instead of wood as previously on S. 4 and S.5. The radiators were redesigned . To compensate, to some extent, for the additional weight, the front part of the fuselage also acted as an engine bearer. A more noticeable difference was that the floats were placed farther forward, relative to the S.5. o fasilitate cooling, the oiltank was locadet to the rear, actually in the fin, and the oil was piped along coolers on the fuselage side and returned to the engine via ducts on the undersurface of the fuselage.

N247 Delivered to High Speed Flight August 1929. Flown by Flt. Lt. H. R. D. Calshot to win the 11th Schneider contest at Spithead September 7th, 1929 at an average speed of 328.63 m.p.h. later flown Sqr. Ldr. A. H. Orlebar to achieve World Speed Record fist at 336.3 and later raised it to 357.7 m.p.h. It was completed to S.6A standard as backup plain May 1931 but crashed August 18th 1931 killing the pilot Flg. Off. G. Brinton.

N248 Delivered to High Speed Flight August 1929 and bearing race nr 8 at the 11th Schneider contest and flown by Flg. Off. R. L. R. Atcherley who was disqualified due to a mistake by him in identifying marker pylons, but a World Speed Record at 332 m.p.h on a 50 km circuits and 331 m.p.h on a 100 km circuits. Modified to S.6A standard in 1931. During test flight in June a piece of cowling was torn away and Flg. Off Hope landet it at once. Unfortunately it made a landing in the wake of a liner witch turned it upside down. The flight sank but Hope was rescued, it was salvage and repaired and was standby aircraft for the 1931 Schneider as nr 4.

From "Spitfire - the story of a famous fighter" by Bruce Robertson
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