Editing RL10 (section)

==Table of versions==
{{sticky header}}
{| class="wikitable sortable sticky-header"
|-
! Version
! Status
! First flight
! Dry mass
! Thrust
! [[Specific impulse|''I''<sub>sp</sub>]] ([[exhaust velocity|''v''{{sub|e}}]]), {{abbr|vac.|vacuum}}
! Length
! Nozzle diameter
! [[Thrust-to-weight ratio|T:W]]
! {{abbr|O:F|Oxidiser to fuel ratio}}
! [[Expansion ratio]]
! Chamber pressure
! Burn time
! Associated stage
! Notes
|-
| {{nowrap|RL10A-1}}
| Retired
| 1962
| {{cvt|131|kg}}
| {{cvt|15000|lb-f|kN|order=flip}}
| {{cvt|425|isp}}
| {{cvt|1.73|m}}
| {{cvt|1.53|m}}
| 52:1
| 5:1
| 40:1
| {{cvt|20.7|bar}}
| 430&nbsp;s
| [[Centaur (rocket stage)|Centaur A]]
| Prototype<br /><ref name="Norbert" /><ref name="EA10A1">{{Cite encyclopedia |title=RL-10A-1 |encyclopedia=Encyclopedia Astronautica |url=http://www.astronautix.com/engines/rl10a1.htm |access-date=February 27, 2012 |last=Wade |first=Mark |date=November 17, 2011 |archive-url=https://web.archive.org/web/20111115155200/http://www.astronautix.com/engines/rl10a1.htm |archive-date=November 15, 2011 |url-status=dead |df=mdy-all}}</ref><ref name="S2S" /><ref name="GSPAC">{{Cite web |title=Atlas Centaur |url=http://space.skyrocket.de/doc_lau/atlas_centaur.htm |access-date=February 29, 2012 |publisher=Gunter's Space Page}}</ref>
|-
| {{nowrap|RL10A-3C}}
| Retired
| 1963
| {{cvt|131|kg}}
| {{cvt|65.6|kN}}
| {{cvt|444|isp}}
| {{cvt|2.49|m}}
| {{cvt|1.53|m}}
| 51:1
| 5:1
| 57:1
| {{cvt|32.75|bar}}
| 470&nbsp;s
| [[Centaur (rocket stage)|Centaur]] B/C/D/E
| <ref name="EA10A3">{{Cite encyclopedia |title=RL-10A-3 |encyclopedia=Encyclopedia Astronautica |url=http://www.astronautix.com/engines/rl10a3.htm |access-date=February 27, 2012 |last=Wade |first=Mark |date=November 17, 2011 |archive-url=https://web.archive.org/web/20111206225154/http://www.astronautix.com/engines/rl10a3.htm |archive-date=December 6, 2011 |url-status=dead |df=mdy-all}}</ref>
|-
| {{nowrap|RL10A-3S}}
| Retired
| 1964
| {{cvt|296|lb|kg|order=flip}}
| {{cvt|15,000|lb-f|kN|order=flip}}
| {{cvt|427|isp}}
| {{cvt|1.73|m}}
|
| 51:1
| 5:1
| 40:1
| {{cvt|20.7|bar}}
|
| [[S-IV]]
| <ref name="Norbert" /><ref name="Sutton 2005" />
|-
| {{nowrap|RL10A-4}}
| Retired
| 1992
| {{cvt|168|kg}}
| {{cvt|92.5|kN}}
| {{cvt|449|isp}}
| {{cvt|2.29|m}}
| {{cvt|1.17|m}}
| 56:1
| 5.5:1
| 84:1
| {{cvt|39.8|bar}}
| 392&nbsp;s
| [[Centaur (rocket stage)|Centaur IIA]]
| <ref name="Norbert" /><ref name="EA10A4">{{Cite encyclopedia |title=RL-10A-4 |encyclopedia=Encyclopedia Astronautica |url=http://www.astronautix.com/engines/rl10a4.htm |access-date=February 27, 2012 |last=Wade |first=Mark |date=November 17, 2011 |archive-url=https://web.archive.org/web/20111115172045/http://www.astronautix.com/engines/rl10a4.htm |archive-date=November 15, 2011 |url-status=dead |df=mdy-all}}</ref>
|-
| {{nowrap|RL10A-5}}
| Retired
| 1993
| {{cvt|143|kg}}
| {{cvt|64.7|kN}}
| {{cvt|373|isp}}
| {{cvt|1.07|m}}
| {{cvt|1.02|m}}
| 46:1
| 6:1
| 4:1
| {{cvt|39.8|bar}}
| 127&nbsp;s
| [[McDonnell Douglas DC-X|DC-X]]
| <ref name="Norbert" /><ref name="EA10A5">{{Cite encyclopedia |title=RL-10A-5 |encyclopedia=Encyclopedia Astronautica |url=http://www.astronautix.com/engines/rl10a5.htm |access-date=February 27, 2012 |last=Wade |first=Mark |date=November 17, 2011 |archive-url=https://web.archive.org/web/20111115141830/http://www.astronautix.com/engines/rl10a5.htm |archive-date=November 15, 2011 |url-status=dead |df=mdy-all}}</ref>
|-
| {{nowrap|RL10B-2}}
| Retired
| 1998
| {{cvt|664|lb|order=flip}}
| {{Convert|24750|lb-f|kN|abbr=on|order=flip}}
| {{Convert|465.5|isp|abbr=on}}
|Stowed: {{cvt|7|ft|2.5|in|m|1|order=flip}}<hr>Deployed: {{cvt|13|ft|7.5|in|m|2|order=flip}}
| {{cvt|7|ft|0.5|in|m|2|order=flip}}
| 40:1
| 5.88:1
| 280:1
| {{cvt|44.12|bar}}
| 5m: 1,125&nbsp;s<hr>4m: 700&nbsp;s
| [[Delta Cryogenic Second Stage|DCSS]]<br />[[Interim Cyrogenic Propulsion Stage|ICPS]]
| Succeeded by RL10C-2.<ref name="EA10B2">{{Cite encyclopedia |title=RL-10B-2 |encyclopedia=Encyclopedia Astronautica |url=http://www.astronautix.com/engines/rl10b2.htm |access-date=February 27, 2012 |last=Wade |first=Mark |date=November 17, 2011 |archive-url=https://web.archive.org/web/20120204144940/http://www.astronautix.com/engines/rl10b2.htm |archive-date=February 4, 2012 |url-status=dead |df=mdy-all}}</ref><ref>{{Cite web |title=Delta IV Launch Services User's Guide, June 2013 |url=https://www.ulalaunch.com/docs/default-source/rockets/delta-iv-user's-guide.pdf |access-date=15 March 2018 |website=ULA Launch}}</ref>
|-
| {{nowrap|RL10A-4-1}}
| Retired
| 2000
| {{cvt|167|kg}}
| {{cvt|99.1|kN}}
| {{cvt|451|isp}}
| {{cvt|1.78|m}}
| {{cvt|1.53|m}}
| 61:1
|
| 84:1
| {{cvt|42|bar}}
| 740&nbsp;s
| [[Centaur (rocket stage)|Centaur IIIA]]
| <ref name="Norbert" /><ref name="EA10A41">{{Cite encyclopedia |title=RL-10A-4-1 |encyclopedia=Encyclopedia Astronautica |url=http://www.astronautix.com/engines/rl10a41.htm |access-date=February 27, 2012 |last=Wade |first=Mark |date=November 17, 2011 |archive-url=https://web.archive.org/web/20111117134046/http://www.astronautix.com/engines/rl10a41.htm |archive-date=November 17, 2011 |url-status=dead |df=mdy-all}}</ref>
|-
| {{nowrap|RL10A-4-2}}
| Active
| 2002
| {{cvt|370|lb|order=flip}}
| {{Convert|22300|lb-f|kN|abbr=on|order=flip}}
| {{Convert|451|isp|abbr=on}}
| {{cvt|7|ft|6|in|m|2|order=flip}}
| {{cvt|3|ft|10|in|m|2|order=flip}}
| 61:1
|
| 84:1
| {{cvt|42|bar}}
| 740&nbsp;s
| [[Centaur (rocket stage)|Centaur IIIB]]<br />Centaur SEC<br />Centaur DEC
| Used for Starliner launches.<ref name="Norbert" /><ref name="EA10A42">{{Cite encyclopedia |title=RL-10A-4-2 |encyclopedia=Encyclopedia Astronautica |url=http://www.astronautix.com/engines/rl10a42.htm |access-date=February 27, 2012 |last=Wade |first=Mark |date=November 17, 2011 |archive-url=https://web.archive.org/web/20120130143126/http://www.astronautix.com/engines/rl10a42.htm |archive-date=January 30, 2012 |url-status=dead |df=mdy-all}}</ref><ref name="Aerojet Rocketdyne" />
|-
| {{nowrap|RL10B-X}}
| Cancelled
| {{n/a}}
| {{cvt|317|kg}}
| {{cvt|93.4|kN}}
| {{cvt|470|isp}}
|
| {{cvt|1.53|m}}
| 30:1
|
| 250:1
|
| 408&nbsp;s
| [[Centaur (rocket stage)|Centaur B-X]]
| <ref name="EA10BX">{{Cite encyclopedia |title=RL-10B-X |encyclopedia=Encyclopedia Astronautica |url=http://www.astronautix.com/engines/rl10bx.htm |access-date=February 27, 2012 |last=Wade |first=Mark |date=November 17, 2011 |archive-url=https://web.archive.org/web/20111115150728/http://www.astronautix.com/engines/rl10bx.htm |archive-date=November 15, 2011 |url-status=dead |df=mdy-all}}</ref>
|-
| CECE
| Demonstrator project
| {{n/a}}
| {{cvt|160|kg}}
| {{cvt|15000|lb-f|kN|order=flip}}, throttle to 5–10%
| >{{cvt|445|isp}}
| {{cvt|1.53|m}}
|
| 43:1
|
|
|
|
|N/A
| <ref name="PWRCECE">{{Cite web |title=Commons Extensible Cryogenic Engine |url=http://www.pw.utc.com/products/pwr/propulsion_solutions/cece.asp |url-status=dead |archive-url=https://web.archive.org/web/20120304081145/http://www.pw.utc.com/products/pwr/propulsion_solutions/cece.asp |archive-date=March 4, 2012 |access-date=February 28, 2012 |publisher=Pratt & Whitney Rocketdyne |df=mdy-all}}</ref><ref>{{Cite web |title=Common Extensible Cryogenic Engine – Aerojet Rocketdyne |url=http://www.rocket.com/common-extensible-cryogenic-engine |url-status=dead |archive-url=https://web.archive.org/web/20141112144157/http://www.rocket.com/common-extensible-cryogenic-engine |archive-date=November 12, 2014 |access-date=April 8, 2018 |website=www.rocket.com}}</ref>
|-
| {{nowrap|RL10C-1}}
| Retired
| 2014
| {{cvt|420|lb|order=flip}}
| {{Convert|22820|lb-f|kN|abbr=on|order=flip}}
| {{Convert|449.7|isp|abbr=on}}
| {{cvt|7|ft|2|in|m|2|order=flip}}
| {{cvt|4|ft|9|in|m|2|order=flip}}
| 57:1
| 5.5:1
| 130:1
|
| 
| [[Centaur (rocket stage)|Centaur SEC]]<br />Centaur DEC
| Succeeded by RL-10C-1-1.<ref name="CPS">{{Cite web |date=August 5, 2011 |title=Cryogenic Propulsion Stage |url=https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110015783.pdf |access-date=October 11, 2014 |publisher=NASA}}</ref><ref>{{Cite web |title=Atlas-V with RL10C powered Centaur |url=http://forum.nasaspaceflight.com/index.php?topic=34891.0 |access-date=April 8, 2018 |website=forum.nasaspaceflight.com}}</ref><ref>{{Cite web |title=Evolution of Pratt & Whitney's cryogenic rocket engine RL-10 |url=http://b14643.de/Spacerockets/Diverse/P&W_RL10_engine/index.htm |url-status=dead |archive-url=https://web.archive.org/web/20160303141931/http://b14643.de/Spacerockets/Diverse/P%26W_RL10_engine/index.htm |archive-date=March 3, 2016 |access-date=February 20, 2016 |df=mdy-all}}</ref><ref name="Aerojet Rocketdyne">{{Cite web |title=RL10 Engine |url=http://www.rocket.com/rl10-engine |url-status=dead |archive-url=https://web.archive.org/web/20170430183058/http://www.rocket.com/rl10-engine |archive-date=April 30, 2017 |access-date=March 13, 2016 |publisher=Aerojet Rocketdyne}}</ref>
|-
| {{nowrap|RL10C-1-1}}
| Active
| 2021
| {{cvt|415|lb|order=flip}}
| {{Convert|23825|lb-f|kN|abbr=on|order=flip}}
| {{Convert|453.8|isp|abbr=on}}
| {{cvt|8|ft|0.7|in|m|2|order=flip}}
| {{cvt|5|ft|2|in|m|2|order=flip}}
| 57:1
| 5.5:1
| 155:1
|
|Atlas: 842&nbsp;s<hr>Vulcan: 1,077&nbsp;s
| Centaur SEC<br />Centaur V
| Current standard engine for Atlas V and Vulcan Centaur.<ref name="Norbert" /><ref name="Aerojet Rocketdyne 2">{{Cite web |title=Aerojet Rocketdyne RL10 Propulsion System |url=http://rocket.com/sites/default/files/documents/Capabilities/PDFs/RL10_data_sheet.pdf |url-status=dead |archive-url=https://web.archive.org/web/20220130111530/https://rocket.com/sites/default/files/documents/Capabilities/PDFs/RL10_data_sheet.pdf |archive-date=30 January 2022 |website=Aerojet Rocketdyne}}</ref>
|-
| {{nowrap|RL10C-2-1}}
| Retired
| 2022
| {{cvt|664|lb|order=flip}}
| {{Convert|24750|lb-f|kN|abbr=on|order=flip}}
| {{Convert|465.5|isp|abbr=on}}
|Stowed: {{cvt|7|ft|2.5|in|m|1|order=flip}}<hr>Deployed: {{cvt|13|ft|7.5|in|m|2|order=flip}}
| {{cvt|7|ft|0.5|in|m|2|order=flip}}
| 37:1
| 5.88:1
| 280:1
|
|
| [[Delta Cryogenic Second Stage|DCSS]]
| <ref>{{Cite web |title=RL10 Engine {{!}} Aerojet Rocketdyne |url=https://www.rocket.com/space/liquid-engines/rl10-engine |access-date=2020-06-19 |website=www.rocket.com}}</ref><ref>{{Cite web |last=Graham |first=William |date=2022-09-24 |title=Last West Coast Delta IV Heavy launches with NROL-91 |url=https://www.nasaspaceflight.com/2022/09/delta-iv-nrol-91/ |access-date=2023-08-29 |website=NASASpaceFlight.com |language=en-US}}</ref>
|-
| {{nowrap|RL10C-2}}
| Delivered, not yet flown
| 2026 (expected)
| 
| {{cvt|24750|lb-f|kN|order=flip}}
| {{cvt|465.5|isp|}}
| Stowed: {{cvt|7|ft|2.5|in|m|1|order=flip}}<hr>Deployed: {{cvt|13|ft|7.5|in|m|2|order=flip}}
| 2.15 m (7&nbsp;ft 1 in)
| 37:1
| 5.88:1
| 280:1
|
|
| [[Interim Cyrogenic Propulsion Stage|ICPS]]
| Conversion of C-3<ref name="sls-update">{{Cite web |date=15 April 2020 |title=NASA'S SPACE LAUNCH SYSTEM BEGINS MOVING TO THE LAUNCH SITE |url=https://ntrs.nasa.gov/api/citations/20205000944/downloads/Askins%20JANNAF%202020%20PAPER%2004152020.docx.pdf |url-status=live |archive-url=https://web.archive.org/web/20211013024817/https://ntrs.nasa.gov/api/citations/20205000944/downloads/Askins%20JANNAF%202020%20PAPER%2004152020.docx.pdf |archive-date=13 October 2021 |access-date=24 May 2023 |publisher=NASA}}</ref>
|-
| {{nowrap|RL10C-3}}
| Delivered, not yet flown
| 2028 (expected)
| {{cvt|508|lb|order=flip}}
| {{Convert|24340|lb-f|kN|abbr=on|order=flip}}
| {{Convert|460.1|isp|abbr=on}}
| {{cvt|10|ft|4.3|in|m|2|order=flip}}
| {{cvt|6|ft|1|in|m|2|order=flip}}
| 48:1
| 5.7:1
| 215:1
|
|
| [[Exploration Upper Stage|EUS]]
| <ref name="Norbert" /><ref name="Aerojet Rocketdyne 2" /><ref name="sls-update" />
|-
| {{nowrap|RL10C-5-1}}
| Cancelled
| {{n/a}}
| {{cvt|188|kg}}
| 106&nbsp;kN (23,825&nbsp;{{lbf}})
| {{cvt|453.8|isp}}
| 2.46 m (8&nbsp;ft 0.7&nbsp;in)
| 1.57 m (4&nbsp;ft 9&nbsp;in)
| 57:1
| 5.5:1
|
|
|
| [[Omega (rocket)|OmegA]]
| <ref name="Aerojet Rocketdyne 2" /><ref name="SpaceNews 2020" />
|-
| {{nowrap|RL10C-X}}
| {{nowrap|In development}}
| 2025 (expected)
| {{cvt|231|kg}}
| 107.29&nbsp;kN (24,120&nbsp;{{lbf}})
| {{cvt|460.9|isp}}
| 3.31 m (130.4&nbsp;in)
| 1.87 m (73.7&nbsp;in)
| 47.29:1
| 5.5:1
|
|
|
| [[Centaur (rocket stage)#Centaur V|Centaur V]]
| Additive manufacturing <ref>{{Cite web |title=Aerojet Rocketdyne Secures Its Largest RL10 Engine Contract From ULA |url=https://ir.aerojetrocketdyne.com/news-releases/news-release-details/aerojet-rocketdyne-secures-its-largest-rl10-engine-contract |access-date=2022-04-16 |website=www.aerojetrocketdyne.com}}</ref><ref>{{Cite web |title=RL10 Engine &#124; Aerojet Rocketdyne |url=https://www.rocket.com/space/liquid-engines/rl10-engine |access-date=2022-05-07 |publisher=Rocket.com}}</ref>
|}