| S-4 | |
|---|---|
| |
| S-4 displayed at an exhibition in Kharkov in the spring of 1911 | |
| Role | Experimental |
| National origin | Russian Empire |
| Designer | Igor Sikorsky |
| Introduction | 1911 |
| Number built | 1 |
| Developed from | Sikorsky S-3 |
The Sikorsky S-4 was a Russian aircraft built by Igor Sikorsky using many components of the S-3 including the 40 hp (30 kW) Anzani three-cylinder engine. Construction of the biplane began in late December 1910 and was completed early in the spring of 1911. The machine appeared in a static display at an aeronautical exhibition at Kharkov in the spring of 1911, but was never flown. Some time afterward it was disassembled.[1]
Specifications[edit]
Data from Russian Aviation Museum[2]
General characteristics
- Crew: One
- Length: 26 ft 3 in (8 m)
- Upper wingspan: 29 ft 6 in (9 m)
- Wing area: 300 sq ft (28 m2)
- Empty weight: 573 lb (260 kg)
- Gross weight: 794 lb (360 kg)
- Powerplant: 1 × Anzani 3 -cylinder air-cooled fan piston engine, 40 hp (30 kW)
Performance