| 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 sesquiplane 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 twin Lewis machine guns ring-mounted on the rear cockpit.[1]
Specifications
Data from [1]
General characteristics
- Crew: two
- Length: 26 ft 0 in (7.92 m)
- Wingspan: 45 ft 0 in (13.72 m) [2]
- Height: 10 ft 4 in (3.15 m)
- Wing area: 260 sq ft (24.15 m2) [2]
- Empty weight: 1,700 lb (771 kg)
- Gross weight: 2,900 lb (1,315 kg)
- Powerplant: 1 × Wright Whirlwind J-4 , 200 hp (149 kW)
Performance
- Maximum speed: 35 mph (56.3 km/h, 30 kn)
- Endurance: 6 hours 0 minutes
- Service ceiling: 15,000 ft (4,572 m)
References
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