Sikorsky S-3
The Sikorsky S-3 was an early Russian single seat biplane design by Igor Sikorsky. Work on the machine started in July 1910 and was completed in late November.
| S-3 | |
|---|---|
 | |
| Sikorsky S-3 near Kiev Russia Empire December 1910 | |
| Role | Experimental |
| National origin | Russian Empire |
| First flight | December 1910 |
| Status | damaged with parts reused in Sikorsky S-4 |
| Number built | 1 |
| Developed from | Sikorsky S-2 |
| Developed into | Sikorsky S-4 |
Design and development
The S-3 was a larger improved version of the S-2 with a more powerful 40 hp (30 kW) Anzani three-cylinder engine. The main wings were manufactured in a more uniform manner with the ribs held to a closer tolerance and the fabric covering was of better quality. Other refinements included larger ailerons and faster-responding flight control surfaces.[1]
Operational history
The S-3 exhibited performance superior to the S-2, and Sikorsky made a dozen successful flights starting early in December. The S-3 made its last flight on December 13, 1910 when at an altitude of 90 feet the engines distributor shifted to a retarded position and lost power. The aircraft landed hard on a frozen pond, broke through the ice and sank causing serious damage. The S-3 was salvaged and some parts including the engine were used in the construction of the S-4.[2]
Specifications
Data from Russian Aviation Museum[3]
General characteristics
- Crew: One
- Length: 26 ft 3 in (8 m)
- Upper wingspan: 26 ft 3 in (8 m)
- Wing area: 260 sq ft (24 m2)
- Empty weight: 485 lb (220 kg)
- Gross weight: 683 lb (310 kg)
- Powerplant: 1 × Anzani 3 -cyl. air-cooled fan piston engine, 40 hp (30 kW)
Performance
- Service ceiling: 98 ft (30 m)