Editing Expander cycle (section)

== Comparison of upper-stage expander-cycle engines ==

{| class="wikitable" style="text-align:center;"
|+ Specifications
! 　
! [[RL10]]B-2
! [[BE-3U]]
! [[Vinci (rocket engine)|Vinci]]
! [[YF-75D]]
! [[YF-79]]
! [[RD-0146]]D
! [[LE-5B]]
! [[LE-9]]
|-
! Country of origin
| {{USA}}
| {{USA}}
| {{FRA}}
| {{PRC}}
| {{PRC}}
| {{RUS}}
| {{JPN}}
| {{JPN}}
|-
! Cycle
| Expander
| Expander bleed cycle
| Expander
| Expander
| Expander
| Expander
| Expander bleed cycle, <br />chamber expander
| Expander bleed cycle
|-
! Thrust, vacuum
| 110&nbsp;kN (25,000&nbsp;lbf)
| 769&nbsp;kN (173,000&nbsp;lbf)<ref name="rsuqSn7ifpU">{{cite web |title=New Glenn Completes Second Stage Hotfire! |url=https://www.blueorigin.com/news/new-glenn-completes-second-stage-hotfire|website=BlueOrigin |access-date=1 November 2024}}</ref>
| 180&nbsp;kN (40,000&nbsp;lbf)
| 88.36&nbsp;kN (19,860&nbsp;lbf)
| 250&nbsp;kN (56,200&nbsp;lbf)
| 68.6&nbsp;kN (15,400&nbsp;lbf)
| 137.2&nbsp;kN (30,840&nbsp;lbf)
| 1471&nbsp;kN (330,000&nbsp;lbf)<ref>{{Cite web |last1=Watanabe |first1=Daiki |last2=Manako |first2=Hiroyasu |last3=Onga |first3=Tadaoki |last4=Tamura |first4=Takashi |last5=Ikeda |first5=Kazufumi |last6=Isono |first6=Mitsunori |date=December 2016 |title=Combustion Stability Improvement of LE-9 Engine for Booster Stage of H3 Launch Vehicle |url=https://www.mhi.co.jp/technology/review/pdf/e534/e534028.pdf |access-date=2024-03-13 |website=Mitsubishi Heavy Industries Technical Review}}</ref>
|-
! Mixture ratio
| 5.88
|
| 5.8
| 6.0
| 6.0
|
| 5
| 5.9
|-
! Nozzle ratio
| 280
|
| 240
| 80
| 160
|
| 110
| 37
|-
! [[Specific impulse|''I''<sub>sp</sub>]], vacuum (s)
| 462<ref>{{Cite web |url=http://www.rocket.com/rl10-engine |title=RL10 Engine &#124; Aerojet Rocketdyne |access-date=2017-06-06 |archive-url=https://web.archive.org/web/20170430183058/http://www.rocket.com/rl10-engine |archive-date=2017-04-30 |url-status=dead }}</ref>
| 455<ref>{{Cite web |last=Limp |first=David |date=2024-11-12 |title=The BE-3U's nozzles release hydrogen-rich steam at speeds of roughly 10,000 mph |url=https://x.com/davill/status/1856436665788854463 |access-date=2024-11-29 |website=Twitter}}</ref>
| 457
| 442.6
| 455.2
| 470
| 447
| 426
|-
! Chamber pressure (MPa)
| 4.412
|
| 6.1
| 4.1
| 7.0
| 5.9
| 3.58
| 10.0
|-
! LH<sub>2</sub> TP (rpm)
|
|
| 65,000
| 98,180
|
|
| 52,000
|
|-
! LOX TP (rpm)
|
|
|
|
|
|
| 18,000
|
|-
! Length (m)
| 4.14
|
| 4.2
|
|
| 3.358
| 2.79
| 3.8
|-
! Dry mass (kg)
| 277
|
| 280
| 265
| 
|
| 285
| 2400
|}