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Sikorsky S-20

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RBVZ S-XX

General information
Type	Fighter
Manufacturer	RBVZ (Russo-Baltic Wagon Works)
Designer	Igor Sikorsky
Primary user	Imperial Russian Air Service
Number built	5
History
Introduction date	1916
First flight	1916
Retired	1920

TheSikorsky S-20 (named after its designer) orRBVZ S-XX (named after its manufacturer) was a Russiansingle-bay unequal span two-seat biplane designed byIgor Sikorsky in 1916. Displaying someNieuport influence, it saw very little service duringWorld War I.

Five S-XX aircraft were built in September 1916, with the first two powered by the 100 hp Gnome rotary engine which had powered its predecessor, theRBVZ S-XVI. However, the other three were powered with the 120 hp Le Rhone engine, with which they were allegedly faster than the FrenchNieuport 17.

Operational history

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The S-XX saw little service because it was viewed as inferior^{[citation needed]} to newer enemy aircraft, and no series production was undertaken. As such, only five aircraft were ever produced.

List of operators

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Russian Empire

Imperial Russian Air Service

Specifications

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General characteristics

Length: 6.5 m (21 ft 4 in)
Wingspan: 8.6 m (28 ft 3 in)
Height: 2.6 m (8 ft 6 in)
Wing area: 17 m² (180 sq ft)
Empty weight: 395 kg (871 lb)
Gross weight: 570 kg (1,257 lb)
Powerplant: 1 ×Le Rhône Type 9Jb 9-cylinder air-cooled rotary piston engine, 89 kW (120 hp)
Propellers: 2-bladed fixed-pitch propeller

Performance

Maximum speed: 180 km/h (110 mph, 97 kn)
Range: 390 km (240 mi, 210 nmi)
Service ceiling: 5,600 m (18,400 ft)
Time to altitude: 2,000 m (6,600 ft) in 6 minutes 20 seconds
Wing loading: 33.0 kg/m² (6.8 lb/sq ft)
Power/mass: 0.21 hp/kg

Armament

Guns: 1 x 7.7 mmLavrov machine gun

References

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This article includes alist of references,related reading, orexternal links,but its sources remain unclear because it lacksinline citations. Please helpimprove this article byintroducing more precise citations.(March 2016) (Learn how and when to remove this message)

Bibliography

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Wikimedia Commons has media related toSikorsky S-20.

William Green and Gordon Swanborough.The Complete Book of Fighters. Colour Library Direct, Godalming, UK: 1994.ISBN 1-85833-777-1.

v t e Sikorsky aircraft
Fixed-wing aircraft (company designations)	S-1 S-2 S-3 S-4 S-5 S-6 S-7 S-8 S-9 S-10 S-11 S-12 S-13 S-14 S-15 S-16 S-17 S-18 S-19 S-20 S-21 S-22/23/24/25/26/27 S-28 S-29-A S-30 S-31 S-32 S-33 S-34 S-35 S-36 S-37 S-38 S-39 S-40 S-41 S-42 S-43 VS-44 S-45
Fixed-wing aircraft (military designations)	C-6 C-28 JRS JR2S PS P2S RS XBLR-3 XPBS XSS XV-2
Helicopters (company designations)	VS-300 (S-46) S-47 S-48 S-49 S-50 S-51 S-52 S-53 S-54 S-55 S-56 S-57 S-58 S-59 S-60 S-61 S-61L/N S-61R S-62 S-63 S-64 S-65 S-66 S-67 S-68 S-69 S-70 S-71 S-72 S-73 S-74 S-75 S-76 S-80 S-92 S-95 S-97 S-100 S-102 S-103 S-300 S-333 S-434
Helicopters (military designations)	SH-3 Sea King HH-3E/F R-4 H-5 H-6 H-18 H-19 Chickasaw H-34 Choctaw CH-37 Mojave XH-39 HH-52A Seaguard CH-53 Sea Stallion CH-53E Super Stallion CH-53K King Stallion MH-53 CH-54 Tarhe UH-60 Black Hawk HH-60G Pave Hawk HH-60J/MH-60T MH-60R/S Seahawk SH-60B/F Seahawk H-60J/K VH-60 RAH-66 Comanche VH-92 Patriot CH-124 Sea King CH-148 Cyclone HLH
Experimental aircraft	Cypher/Cypher II Firefly Raider Raider X SB-1 X2 XBLR-3 XV-2

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