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{{Orphan|date=February 2009}}
__NOTOC__
{|{{Infobox Aircraft Begin
{|{{Infobox Aircraft Begin
|name = RBVZ S-XX
|name = RBVZ S-XX
|image =
|image =File:06072007-sikorskiy20-1.jpg
|caption =
|caption =
}}{{Infobox Aircraft Type
}}{{Infobox Aircraft Type
Line 9: Line 7:
|manufacturer = [[RBVZ]] (Russo-Baltic Wagon Works)
|manufacturer = [[RBVZ]] (Russo-Baltic Wagon Works)
|designer = [[Igor Sikorsky]]
|designer = [[Igor Sikorsky]]
|first flight = {{avyear|1916}}
|first flight = 1916
|introduced = {{avyear|1916}}
|introduced = 1916
|retired = {{avyear|1920}}
|retired = 1920
|status =
|status =
|primary user = [[Imperial Russian Air Service]]
|primary user = [[Imperial Russian Air Service]]
|more users =
|more users =
|produced =
|produced =
|number built =5
|number built =5
|unit cost =
|unit cost =
|variants with their own articles =
|variants with their own articles =
}}
}}
|}
|}


The '''Sikorsky S-20''' (named after its designer) or '''RBVZ S-XX''' (named after its manufacturer) was a Russian single-bay un-equal span two-seat biplane designed by [[Igor Sikorsky]] in 1916. Displaying some [[Nieuport]] influence, it saw very little service during [[World 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, the [[RBVZ S-XVI]]. However, the other three were powered with the 120 hp Le Rhone engine, with which they were allegedly faster than the French [[Nieuport 17]].
The '''Sikorsky S-20''' (named after its designer) or '''RBVZ S-XX''' (named after its manufacturer) was a Russian [[single-bay]] unequal span two-seat biplane designed by [[Igor Sikorsky]] in 1916. Displaying some [[Nieuport]] influence, it saw very little service during [[World 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, the [[RBVZ S-XVI]]. However, the other three were powered with the 120 hp Le Rhone engine, with which they were allegedly faster than the French [[Nieuport 17]].
== Operational History==
The S-XX saw little service due to it being viewed as inferior to newer enemy aircraft and no series production was undertaken. As such only 5 aircraft were ever produced.


==Operational history==
== List of operators ==
The S-XX saw little service because it was viewed as inferior{{Citation needed|reason=Contradicts with russian source|date=October 2024}} to newer enemy aircraft, and no series production was undertaken. As such, only five aircraft were ever produced.

==List of operators==
; {{flag|Russian Empire|1914}}
; {{flag|Russian Empire|1914}}
* [[Imperial Russian Air Service]]


== Specifications ==
==Specifications==
{{Aircraft specs
{{aircraft specifications|
|ref=<!-- reference -->
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|crew=Two
|crew=
|capacity=
|span main=8.60m
|length m=6.5
|span alt=28 ft 2½ in
|length note=
|area main=17m²
|span m=8.6
|area alt=182.99 ft²
|span note=
|length main=6.50m
|height m=2.6
|length alt=21 ft 3⅞ in
|height main=m
|height note=
|wing area sqm=17
|height alt=
|wing area note=
|empty weight main=395 kg
|aspect ratio=<!-- sailplanes -->
|empty weight alt= 871 lb
|airfoil=<!--'''root:''' [[NACA airfoil|NACA ]]; '''tip:''' [[NACA airfoil|NACA ]]<ref name="Selig">{{cite web |last1=Lednicer |first1=David |title=The Incomplete Guide to Airfoil Usage |url=https://m-selig.ae.illinois.edu/ads/aircraft.html |website=m-selig.ae.illinois.edu |accessdate=16 April 2019}}</ref>-->
|loaded weight main=570 kg
|loaded weight alt=1,257 lb
|empty weight kg=395
|max takeoff weight main=
|empty weight note=
|max takeoff weight alt=
|gross weight kg=570
|gross weight note=
|max takeoff weight kg=
|max takeoff weight note=
|fuel capacity=
|more general=
|more general=
<!--
|engine (prop)=120hp Le Rhône
Powerplant
|type of prop=air-cooled [[rotary engine]]
-->
|number of props=1
|eng1 number=1
|power main=90 kW
|eng1 name=[[Le Rhône Type 9Jb]]
|power alt=120 hp
|eng1 type=9-cylinder air-cooled rotary piston engine
|max speed main=190 km/h
|eng1 hp=120
|max speed alt=118 mph
|eng1 note=
|max speed more=

|range main=
|prop blade number=2
|range alt=
|prop name=fixed-pitch propeller
|ceiling main=
|prop dia m=<!-- propeller aircraft -->
|ceiling alt=
|climb rate main=
|prop dia note=
<!--
|climb rate alt=
Performance
|loading main=
-->
|loading alt=
|max speed kmh=180
|power/mass main=
|max speed note=
|power/mass alt=
|cruise speed kmh=
|cruise speed note=
|stall speed kmh=
|stall speed note=
|never exceed speed kmh=
|never exceed speed note=
|range km=390
|range note=
|combat range km=
|combat range note=
|ferry range km=
|ferry range note=
|endurance=<!-- if range unknown -->
|ceiling m=5600
|ceiling note=
|climb rate ms=
|climb rate note=
|time to altitude={{cvt|2000|m}} in 6 minutes 20 seconds
|wing loading kg/m2=33.0
|wing loading note=
|fuel consumption kg/km=
|power/mass=0.21 hp/kg
|more performance=
|more performance=
<!--
* '''Endurance:'''
Armament
* '''Climb to 2,000 m (6,560 ft):''' 6.33 minutes
-->
|guns=1 x 7.7 mm Lavrov machine gun}}
|guns=1 x 7.7 mm [[Lavrov machine gun]]
}}


== Bibliography ==
==References==
{{citations|date=March 2016}}
* William Green and Gordon Swanborough. ''The Complete Book of Fighters''. Colour Library Direct, Godalming, UK: 1994. ISBN 1-85833-777-1.
{{reflist}}
===Bibliography===
{{commons category|Sikorsky S-20}}
* William Green and Gordon Swanborough. ''The Complete Book of Fighters''. Colour Library Direct, Godalming, UK: 1994. {{ISBN|1-85833-777-1}}.


{{Sikorsky Aircraft}}
{{Sikorsky Aircraft}}
{{aviation lists}}

[[Category:Russian fighter aircraft 1910-1919]]
[[Category:Sikorsky Aircraft]]


[[Category:1910s Russian fighter aircraft]]
[[cs:Sikorskij S-XX]]
[[Category:Sikorsky aircraft|S-020]]
[[Category:Single-engined tractor aircraft]]
[[Category:Rotary-engined aircraft]]
[[Category:Biplanes]]
[[Category:Aircraft first flown in 1916]]

Latest revision as of 12:25, 24 October 2024

RBVZ S-XX
Role Fighter
Manufacturer RBVZ (Russo-Baltic Wagon Works)
Designer Igor Sikorsky
First flight 1916
Introduction 1916
Retired 1920
Primary user Imperial Russian Air Service
Number built 5

The Sikorsky S-20 (named after its designer) or RBVZ S-XX (named after its manufacturer) was a Russian single-bay unequal span two-seat biplane designed by Igor Sikorsky in 1916. Displaying some Nieuport influence, it saw very little service during World 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, the RBVZ S-XVI. However, the other three were powered with the 120 hp Le Rhone engine, with which they were allegedly faster than the French Nieuport 17.

Operational history

[edit]

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

[edit]
 Russian Empire

Specifications

[edit]

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

References

[edit]

Bibliography

[edit]
Wikimedia Commons has media related to Sikorsky S-20.
  • William Green and Gordon Swanborough. The Complete Book of Fighters. Colour Library Direct, Godalming, UK: 1994. ISBN 1-85833-777-1.
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