Sikorsky Russky Vityaz
| Russky Vityaz | |
|---|---|
| The definitive Russky Vityaz version with four tractor configuration engines. | |
| General information | |
| Type | Airliner |
| Manufacturer | Russian Baltic Railroad Car Works |
| Designer | |
| Number built | 1 |
| History | |
| First flight | 10 May 1913 O.S. |
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The Sikorsky Russky Vityaz (Russian: Русский витязь), or Russian Knight (S-21), previously known as the Bolshoi Baltisky (Russian: Большой Балтийский) (The Great Baltic) in its first four-engined version, was the first four-engine aircraft in the world, designed by Igor Sikorsky and built at the Russian Baltic Railroad Car Works (Russo-Baltiiskyi Vagonnyi Zavod or R-BVZ) in Saint Petersburg in early 1913.