Sikorsky S-31

Sikorsky S-31
Role	Civil utility sesquiplane
National origin	United States
Manufacturer	Sikorsky Manufacturing Corporation
First flight	September 1925
Number built	1

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^[2] 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 2 3 4 5 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.
1 2 Upper wing

Sikorsky aircraft

Fixed-wing aircraft (company designations)	S-1 S-2 S-3 S-4 S-5 S-6 S-7 S-8 S-9 S-10 S-11 S-12 S-13 S-14 S-15 S-16 S-17 S-18 S-19 S-20 S-21 S-22 S-23 S-24 S-25 S-26 S-27 S-28 S-29-A S-30 S-31 S-32 S-33 S-34 S-35 S-36 S-37 S-38 S-39 S-40 S-41 S-42 S-43 VS-44 S-45

Fixed-wing aircraft (military designations)	C-6 C-28 JRS JR2S PS RS XBLR-3 XPBS XSS XV-2

Helicopters (company designations)	VS-300 (S-46) S-47 S-48 S-49 S-51 S-52 S-53 S-54 S-55 S-56 S-57 S-58 S-59 S-60 S-61 S-61L/N S-61R S-62 S-63 S-64 S-65 S-66 S-67 S-68 S-69 S-70 S-71 S-72 S-73 S-74 S-75 S-76 S-80 S-92/H-92 S-97 S-300 S-333 S-434

Helicopters (military designations)	SH-3 HH-3E/F R-4 H-5 H-6 H-18 H-19 H-34 CH-37 XH-39 HH-52A CH-53 CH-53E CH-53K CH-54 HH-60G HH-60J MH-60R/S SH-60B/F SH-60J/K UH-60 VH-60 RAH-66 CH-124 CH-148

Experimental aircraft	Cypher Cypher II Firefly X2 XBLR-3 XV-2

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