Sikorsky S-31

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The Sikorsky S-31 was a 1920s American sesqiuplane designed and built by the Sikorsky Manufacturing Corporation and configured for aerial photography.^[1]

Design and development

The S-31 was a sesquiplane built for photographic work by the Fairchild Flying Corporation, it had two open cockpits and a cabin for the photographic equipment.^[1] The S-31 was powered by a 200 hp (149 kW) Wright Whirlwind J-4 engine and first flew in September 1925.^[1] Following participation in the New York Air Races in October 1925 it was shipped to Brazil to be used by Fairchild for aerial photographic work. At some point the S-31 had a twin Lewis machine-guns ring-mounted on the rear cockpit.^[1]

Specifications

Data from ^[1]

General characteristics

Crew: 2
Length: 26 ft 0 in (7.92 m)
Wingspan: 45 ft 0 in (13.72^[2] m)
Height: 10 ft 4 in (3.15 m)
Wing area: 260 ft² (24.15^[3] m²)
Empty weight: 1700 lb (771 kg)
Gross weight: 2900 lb (1315 kg)
Powerplant: 1 × Wright Whirlwind J-4, 200 hp (149 kW)

Performance

Maximum speed: 35 mph (56.3 km/h)
Endurance: 6 hours 0 min
Service ceiling: 15000 ft (4572 m)

References

Wikimedia Commons has media related to Sikorsky aircraft.

↑ 1.0 1.1 1.2 1.3 1.4 Best, Martin (1990). "Sikorsky American Fixed-Wing Aircraft - Part 1 S-29A to S-35". Archive (Air-Britain) 2002 (4): 127–133. ISSN 0262-4923.
↑ Upper wing
↑ Upper wing

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