Sikorsky S-18
From Wikipedia, the free encyclopedia
The Sikorsky S-18 was a Russian twin engine aircraft designed by Igor Sikorsky and built by the Russian Baltic Railroad Car Works aviation division at Petrograd during World War I.
| S-18 | |
|---|---|
| Sikorsky S-18 | |
| General information | |
| Type | Fighter |
| National origin | Russian Empire |
| Manufacturer | Russian Baltic Railroad Car Works |
| Designer | Igor Sikorsky |
| Number built | 2 |
Design and development
The S-18 was a large three bay biplane fighter/interceptor powered by two 150 hp (112 kW) Sunbeam Crusader V-8 water-cooled engines mounted on the lower wing in a pusher configuration. The aircraft featured armor protection for both crew members with the gunner/observer seated in the nose and armed with a single machine gun. The aircraft was very heavy and with the less than reliable Sunbeam engines neither example built was able to leave the ground.[1][2]
Specifications
Data from Russian Aviation Museum[2]
General characteristics
- Crew: Two
- Length: 31 ft 10 in (9.7 m)
- Upper wingspan: 54 ft 2 in (16.5 m)
- Lower wingspan: 50 ft 2 in (15.3 m)
- Wing area: 620 sq ft (58 m2)
- Empty weight: 3,274 lb (1,485 kg)
- Gross weight: 4,630 lb (2,100 kg)
- Powerplant: 2 × Sunbeam Crusader V-8, side-valve, water-cooled, piston engine, 150 hp (110 kW) each
Performance
- Wing loading: 7.4 lb/sq ft (36.2 kg/m2) max load