U.S. space-rocket liquid propellant engines
 

last update: 12.03.2023 

Engine

Other
Design

Chamb.

Fuel
Flow
(Cycle)

Nozzle
Area
 Ratio

Press.
Exp.
 Ratio

Chamb.
Press.
(MPa)

Propellants

Stage

Oxid.
Mix
 Rate

Thrust s.l.

Isp s.l.

Thrust vac.

Isp vac

Flow
 Rate
(t/sec)

Launcher

kN

sec

Ns/kg

kN

sec

Ns/kg
 Aerojet/Rocketdyne

AR1

 AJ-1E6

 2x1 Staged C.       RP-1/LOX 1st  

4,453.3

301.9

2961

 4,974.1

337.2

3307

1.5042

 -

AR2-3

 1         JP-8/H2O2 -         39.34

245

 2403

 0.0164

 X-37 space plane

F-1B

 2 Gas Gen.       RP-1/LOX Booster   16,058.3

272.3

2670

 17,633.0

299.0

2932

6.0136

 SLS
 Rocketdyne

J-2

 5x1 Gas Gen. 27.5   3.0 LH2/LOX 2nd 5.5       5,160.0 424.3 4161 1.2401 Saturn-V
1       2nd 5.5       1,000.9 425.0 4168 0.2401 Saturn-IB
1       3rd 4.8       876.3 425.5 4173 0.2100 Saturn-V

J-2X

 1   92.1   9.22 2nd 5.5       1,307.5 448.0 4393 0.2976 Ares-I, Ares-V

F-1

 5x1 Gas Gen. 16.0   7.0 RP-1/LOX 1st 2.27

34,478.2

260.0

2550

 40,312.9 304.0 2981 13.5224 Saturn-V
 XLR-10 RM2 1         Alcohol/LOX Core   92.5

179.6

1761

110.5

214.5

2104

0.0525

 Viking sounding rocket

XLR-11

 1X4            

26.7

             X-1 rocket plane

XLR-11

 2X4            

53.4

             X-15 rocket plane

XLR-30 RM2

 1          Booster                 Navaho-Jet booster
 XLR-41-NA-1

"Ofen" copy

 1                      

XLR-43-NA-1

 1                      

XLR-71-NA-1

 2x1         667.2            

NAA75-110-A6

 1 Gas Gen.       Core 1.5 311.4 195.5 1917 359.9 226.0 2216 0.1624 Redstone-Sparta

NAA75-110-A7

 1       Hydyne/LOX Core 1.3 269.0 235.0 2305 416.2 265.0 2599 0.1600 Redstone-Merc., Juno-I

XLR-83-NA-1

 3x1         RP-1/LOX Booster  

1,067.6

 242.0  2373 1,201.0 273.0 2677 0.5000 Navaho-Jet booster

XLR-99

 1            

 253.6

             X-15 rocket plane

LR-89-NA-3

MA-1

 2x1 Gas Gen.       RP-1/LOX Booster   1,316.7 248.0 2432 1,497.3 282.0 2765 0.5414 Atlas-Able

LR-89-NA-5

MA-2

 2x1 Gas Gen.         1,334.5 248.0 2432 1,517.4 282.0 2765 0.5487  Atlas-Agena, -Centaur

LR-89-NA-6

MA-3

 2x1 Gas Gen.         1,467.9 256.0 2510 1,662.8 290.0 2844 0.5847 Atlas E/F

LR-89-NA-7.1

MA-5

 2x1 Gas Gen. 8.0   3.98 2.28 1,645.9 258.0 2530 1,863.4 292.2 2865 0.6505 Atlas-Agena

LR-89-NA-7.2

 2x1         1,679.2 259.1 2541 1,901.6 293.4 2877 0.6609 Atlas-G, Atlas-I

RS-56-OBA

MA-5A

 2x1 Gas Gen. 8.0   4.41 2.25 1,906.0 262.1 2570 2,155.2 296.4 2907 0.7415 Atlas-II, Atlas-IIA(S)

LR-105-NA-3

MA-1

 1 Gas Gen.       RP-1/LOX Sustainer   244.7 215.0 2108 352.2 309.0 3030 0.1166  Atlas-Able

LR-105-NA-5

MA-2

 1 Gas Gen.         253.1 215.0 2108 366.1 311.0 3050 0.1200 Atlas-Agen, -Centaur

LR-105-NA-6

MA-3

 1 Gas Gen.         253.1 215.0 2108 366.1 311.0 3050 0.1200 Atlas E/F

LR-105-NA-7.1

MA-5

 1 Gas Gen.         268.7 220.4 2161 385.2 316.0 3099 0.1243 Atlas-Agena

LR-105-NA-7.2

 1         269.1 220.0 2157 386.4 316.0 3099 0.1243 Atlas-G, Atlas-I

RS-56-OSA

MA-5A

 1 Gas Gen. 25.0   5.07 2.27 268.6 220.4 2161 385.2 316.0 3099 0.1243 Atlas-II, Atlas-IIA(S)

LR-79-NA-1

S-3D

 1 Gas Gen. 8.0     RP-1/LOX 1st   667.2 248.0 2432 758.7 282.0 2766 0.2745 Juno-II

LR-79-NA-7 (inboard)
LR-79-NA-7 (outboard)

H-1

 8x1 Gas Gen. 8.0     RP-1/LOX   5,871.7 250.0 2456 6,654.6 283.8 2783 2.3912 Saturn-I (Block-I)
8.0   4.52   6,690.2 257.5 2525 7,473.1 287.7 2821 2.6490 Saturn-I (Block-II)
8.0   4.36 2.23 7,117.2 262.5 2574 8,297.6 306.0 3001 2.7650 Saturn-IB

LR-79-NA-9

MB-3-I

 1 Gas Gen.         667.2 250.4 2456 756.2 283.9 2784 0.2717 Delta, Thor
Thor-Agena

LR-79-NA-11

MB-3-II

 1 8.0   4.05 2.15 734.0 250.4 2456 831.8 283.9 2784 0.2988

LR-79-NA-13

MB-3-III

 1         756.2 250.4 2456 858.5 283.9 2784 0.3080

RS-27.1

-

 1 Gas Gen. 8.0       911.3 263.0 2579 1,016.4 293.0 2873 0.3536 Delta 2000,4000,5000

RS-27.2

-

 1 8.0       843.0 254.2 2493 1,000.4 301.7 2959 0.3381 Delta 6000

RS-27A

-

 1 12.0   4.85 2.24 914.8 254.2 2493 1,085.8 301.7 2959 0.3670 Delta 7000

RS-68

 1 Gas Gen. 21.5   9.73 LH2/LOX 1st 5.97 2.949.2 364.9 3578 3,314.0 410 4021 0.8242 Delta IV

RS-68A

 1     9.90 5.97 3,122.7 369 3619 3,503.5 414 4060 0.8629

RS-68B

 6x1 21.6   10.26 6.0 18,976.2 372.9 3657 21,271.8 418 4099 5.1894 Ares-V

RS-72

 MBB Aestus-2 1 Gas Gen.   447.5 6.0 MMH/N2O4 Upper stage 2.05

 

     55.6 339.6 3330 0.0167 ?

RS-76

 1         RP-1/LOX 1st   4,002.0 308.0 3020       1.3252 ?

RS-84

 1   36   17.7 1st   4,731.8 305.0 2991 5,026.5 324.0 3177 1.5820 ?

RS-25 (100%)

SSME (P0)

 3x1 Staged C. 77.5   20.65 LH2/LOX Core   1,708.8 362.4 3554 2,142.6 454.4 4456 0.4808 Space Shuttle

SSME (P1)

 3x1       1,668.1 363.2 3562 2,090.7 455.2 4464 0.4684

SSME (P2)

 3x1   20.72   1,657.9 361.5 3545 2,079.8 453.5 4447 0,4677

SSME-I

 3x1       1,684.0 364.8 3577 2,090.7 452.9 4441 0.4707

SSME-IA

 3x1       1,684.0 364.8 3577 2,090.7 452.9 4441 0.4707

SSME-IIA

 3x1 69.0      6.03 1,696.0 366.3 3592 2,094.2 452.3 4436 0.4722

SSME-II

 3x1     1,690.9 366.0 3589 2,088.2 452.0 4432 0.4711

 Aerojet

LR-87-AJ-3

 2x1 Gas Gen.        RP-1/LOX  1st  

1,295.5

256

2510

1467.5

290

2844

0.5160

 Titan-1 ICBM

LR-87-AJ-5

 2x1 Gas Gen. 12.0   5.70 Aerozine50/
N2O4		 1.93 1,734.8  243.5 2388 2,108.5

296.0

2903

 0.7265 Titan 23G

LR-87-AJ-7

 2x1 Gas Gen.         1,912.8 248.0 2432 2,313.1 299.9 2941 0.7865  Titan-2/Gemini

LR-87-AJ-9

 2x1         1,941.7 252.2 2473 2,339.8 303.9 2980 0.7851 Titan-3A, -3B, -3C

LR-87-AJ-11

 2x1 Gas Gen. 15.0   5.70 1.90 2,001.7 252.1 2472 2,413.2 303.9 2980 0.8097 Tit.-3BS, -3D, -3E, -34D

LR-87-AJ-11A.1

 2x1         2,034.6 252.2 2473 2,451.9 303.9 2980 0.8227 Titan-III, -34D7, -IVA

LR-87-AJ-11A.2

 2x1         2,039.5 252.2 2473 2,457.7 303.9 2980 0.8247 Titan-IVB

LR-91-AJ-3

 1 Gas Gen.        RP-1/LOX 2nd         355.9 308 3020

0.1178

 Titan-1 ICBM

LR-91-AJ-5

 1 Gas Gen. 49.2   5.70 Aerozine50
/N2O4		 1.80       444.8 315.5 3094 0.1438 Titan 23G

LR-91-AJ-7

 1               453.7 315.5 3094 0.1466  Titan-2/Gemini

LR-91-AJ-9

 1               453.7 315.5 3094 0.1466  Titan-3A, -3B, -3C

LR-91-AJ-11

 1 Gas Gen. 49.2   5.70 1.78       460.4 315.5 3094 0.1488 Tit.-3BS, -3D, -3E, -34D

LR-91-AJ-11A.1

 1               467.1 315.5 3094 0.1510  Titan-III, -34D7, -IVA

LR-91-AJ-11A.2

 1               472.2 315.5 3094 0.1526  Titan-IVB

AJ-10-37

 1 Pressure       UDMH/
Nitric Acid
 (WFNA) 		2nd 2.8       33.8 271.0 2658 0.0127 Vanguard

AJ-10-42

 1               33.0 267.0 2618 0.0126 Thor-Able-I

AJ-10-101A

 1               33.4 270.0 2648 0.0126 Thor-Able-II

AJ-10-104D

 1               35.1 278.0 2726 0.0129 Thor-Able Star

AJ-10-142

 1               33.4 270.0 2648 0.0126 Thor-Delta

AJ-10-118

 1 20.0   1.42 2.8       33.1 263.0 2579 0.0128 Delta-A

AJ-10-118D

 1               33.7 272.5 2672 0.0126 Delta-B --- Delta-D

AJ-10-118E

 1               35.2 278.0 2726 0.0129 Delta-E --- Delta-N

AJ-10-118F

 1 Pressure       Aerozine50/
N2O4		         42.3 315.0 3089 0.0137 Delta-I

AJ-10-118K

 1 65.0   0.90 1.9       43.4 320.5 3143 0.0138 Delta-II

AJ-10-137

 1 Pressure 62.5   0.67 LSM 1.6       97.9 301.4 2956 0.0331 Apollo-SM

AJ-10-138

 2 Pressure 40.0   0.72 Transtage 2.0       71.7 311.0 3050 0.0235  Titan-3A, -3C,-34D

AJ-10-190

1 Pressure 55   0.86 MMH/N2O4 OMS 1.65       26.7 294.3 2886 0.0092 Shuttle Orbiter,
    EM-1       33.4 313.2 3071 0.0087 Orion SM

AJ-26-58/-59

NK-33

 3 x 1 Staged C.     14.22 RP-1/LOX 1st 2.60

4,535.0

297.1

2914

5,056.8 331.3 3249 1.5565 Kistler K-1

AJ-26-60

NK-43

 1     14.22 2nd 2.60       1,769.0 348.3 3416 0.5179 Kistler K-1

AJ-26-62

NK-33

 2     14.22 1st 2.60

3,022.6

300

2942

 3,371.2

334

3275

1.0274

 Antares

 Pratt & Whitney

XLR-115

  RL-10 1 Expander C.       LH2/LOX           67...89       Experimental

RL-10A-1

 2x1 Expander C. 40   2.07

Centaur A

 5.0       131.2

422.0

4138

0.0317

 Atlas-Centaur

RL-10A-3S

 6x1   2nd       400.3 431.0 4227 0.0947 Saturn-I (Block-II)

RL-10A-3

 2x1   Centaur B       133.4 427.0 4187 0.0319 Atlas-Centaur

RL-10A-3-1

 2x1   Centaur C       136.1 433.0 4246 0.0321 Atlas-Centaur

RL-10A-3-3

 2x1 61   2.72 Centaur D       140.1 442.2 4336 0.0323 Atlas-Centaur

RL-10A-3-3

 2x1   Centaur D-1A       140.1 442.2 4336 0.0323 Atlas-Centaur, Titan-3E

RL-10A-3-3A

 2x1 61   3.28 Centaur D-1AR       146.8 444.4 4358 0.0337 Atlas-Centaur, Titan-IVA

RL-10A-3-3A

 2x1   Centaur D-1B       146.8 444.4 4358 0.0337 Atlas-I

RL-10A-3-3A

 2x1   Centaur D-2       146.8 444.4 4358 0.0337 Atlas-II

RL-10A-4

 2x1 61   3.98 Centaur D-2A 5.50       182.4 446.4 4378 0.0417 Atlas-IIA

RL-10A-4N

 2x1 84   Centaur D-2A       185.0 448.9 4402 0.0420 Atlas-IIA, -IIAS

RL-10A-4-1

 2x1 61   4.20 Centaur D-2A1       195.7 446.4 4378 0.0447 Atlas-IIA, -IIAS, Titan-IVB

RL-10A-4-1N

 2x1 84   Centaur D-2A1       198.4 450.5 4418 0.0449 Atlas-IIA, -IIAS

RL-10A-4-1N

 1 84   Centaur D-3A       99.2 450.5 4418 0.0224 Atlas-IIIA
RL-10A-4-1 1 61   Centaur D-3B       97.9 446.4 4378 0.0224 Atlas-IIIB

RL-10A-4-2

 1   Centaur D-5       97.9 446.4 4378 0.0224 Atlas V

RL-10A-5

 4x1 4.3    ? - ?

222.6

 316 3099

259.0

 368 3609

0.0718

Delta-Clipper DC-X

RL-10B-2

 1 285   4.36 DCSS 5.88       109.4 462.4 4535 0.0241 Delta III

RL-10B-2-1

 1 285   4.44

DCSS

       111.2 465.5 4565 0.0244 Delta IV

RL-10C-1

 1 130   4.36 Centaur D-5 5.50       101.9 449.7 4410 0.0231 Atlas V

RL-10C-1

 2x1       203.7 449.7 4410 0.0462

RL-10C1-1

 1  155   Centaur D-5       105.9 453.8 4450 0.0238 Vulcan

RL-10C-2

 1 285   4.44 DCSS  5.88       111.2 465.5 4565 0.0244 Delta IV

RL-10C-3

 1 215     5.70       108.5 460.1 4570 0.0241 SLS

RL-10C-5-1

 1  155        5.50       105.9 453.8 4450 0.0238 OmegA

RL-60

 1 Expander C.       2nd                 ?
 AR-1000  RD-180 1 Staged C.                         ?

 Bell

Bell 8048

  XLR-81-BA 1 Gas Gen. 20.0     UDMH/IRFNA  Agena 2.55       68.9 276 2707 0.0255 Thor-Agena
Atlas-Agena

Bell 8081

 1 45.0     2.57       70.7 283 2775 0.0255

Bell 8096

 1  >45   3.49 2.57       71.2 291 2854 0.0249

Bell 8247

 1     2.57       71.7 293 2873 0.0249 GATV, Titan-33B/34B

Bell 8096-39

 1     UDMH/HDA 2.69       75.3 300 2942 0.0256 Titan

 TRW

TR-201

 1  Pressure     0.72 Aerozine50/
N2O4		 2nd 1.6      

43.9

 303.0 2971 0.0154 Delta 1000,2000,3000

LMDE

 1                

46.7

305

2991

0.0156

 Apollo Lander

LMAE                (Rocketdyne RS-18)

 1                

 15.57

 311

 3050

 0.0051

 Apollo Lander

TR-107

 1       17.24 RP-1/LOX 1st 2.7 4,456.1 305 2991 4,777.4 327 3207 1.4898 ?

 General Electric

GE X-405

 1 Pressure       RP-1/LOX 1st  

123.9

 248.0 2432

134.8

 270.0 2648 0.0509 Vanguard

 SpaceX

Merlin-1A

 1 Gas Gen. 14.5   5.39 RP-1/LOX  1st 2.17 324.7 253.7 2488 369.2 288.5 2829 0.1305 Falcon-1

Merlin-1Ci

 1 Gas Gen. 16 6.08 348.7 264.5 2594 394.6 299.2 2934 0.1345 Falcon-1+

Merlin-1C

  9x1 Gas Gen.   6.14 3,803.3 267 2618 4,343.7 305 2991 1.4525  Falcon-9 (B1)

Merlin-1C

 1 422.6 267 2618 482.6 305 2991 0.1614 Falcon-1e

Merlin-1C+

 9x1 Gas Gen.   6.77 4,912.2 275 2697 5,556.8 311 3050 1.8220 Falcon-9 (B2)

Merlin-1D

 9x1 Gas Gen. 21.4 226 9.72 2.34 5,889.1 282 2766 6,681.8 320 3138 2.1295 Falcon-9 (v1.1)

Merlin-1D+

 9x1 >21.4 227 10.8 2.36 7,606.6 288.5 2829 8,226.6 312 3060 2.6886 Falcon-9 (1.2)

Merlin-1CV

 1 Gas Gen. 117   6.14 2nd 2.17       524.9 336 3295 0.1593 Falcon-9

Merlin-1DV

 1 Gas Gen. 117 3240 9.72 2nd 2.36       805.1 347 3403 0.2366 Falcon-9 (v1.1)

Merlin-1DV+

 1 >117 3170 10.8 2nd 2.38       934.1 348 3413 0.2737 Falcon-9 (v1.2)

Kestrel-1

 1 Pressure 60   1.03 RP-1/LOX 2nd 2.35       30.5 317.0 3109 0.0098 Falcon-1

Kestrel-2

 1       30.7 320.0 3138 0.0098 Falcon-1+, Falcon-1e

Raptor-Demo

 1 Staged C. 26   20 Methane/LOX     994.4                   BFR   

Raptor

 1 34.5   27 1st 2.6 1,675.9 334.5 3280 2.988.3 355.1 3482 0.5109

Raptor l.n.

 1 107   33 2nd 2.55 2,993.4 360.1 3531 3117.3 375.0 3677 0.8476

Raptor-2

 1 24   32.1 1st                

 Marshall S.F. Center (NASA)

MC-1 (Fastrac)

 1       4.36 RP-1/LOX   2.17 266.9 300 2942 279.4

314

3079

0.0907

 X-34 space plane

 Blue Origin LLC

BE-3

 1 Gas Gen. (2)       LH2/LOX 1st   490.0 360 3530 551.3 405

 3972

0.1388

 New Shepard

BE-3U

 1 Expander C.       3rd         533.8 406

3981

 0.1341

  New Glenn

BE-4

 2x1 Staged C. 23.3   13.44 Methane/LOX 1st   4,893.1 350 3138 5,428.3 355

3481

1.5592

 ULA Vulcan

BE-4

 7x1       1st   17,125.8 350 3138 18,999.0 355

3481

5.4574

  New Glenn

BE-4U

 1         2nd         2,758.0 260

 3531

 0.7812

 New Glenn

BE-7

 1 Expander C.       LH2/LOX           40 453 4442

0.0900

 BMLL
 Garvey Space

LP-1 (aerospike)

 3x1 Pressure   8 2.40 Propylene/LOX 1st   81.4 240 2354 100.8 297 2912

0.0346

 Vector-R

LP-2

 1   70 1.24 2nd         4.43 339 3324

0.0013
 Firefly Aerospace

Reaver-1

 4x1 Gas Gen.       RP-1/LOX 1st   667.5 295.6 2899 736.0 326 3197

0.2302

 Firefly-Alpha

Lightning-1

 1     4.92 2nd         70.1 322 3158

 0.0222

Reaver-2

 5x1       1st   3,891.1 305 2991 4,861.0  334 3275 1.3009 Firefly-Beta (2020)

Lighting-2

 1       2nd         194.0 325 3187  0,0609

Miranda

 7x1       1st   6,539.0 305 2991 7,161.0 334 3275 2.1862 Firefly-Beta (2022)

Viranda

 1       2nd         194.0 325 3187  0,0609

Rocket Lab

RF-1

 9x1 Electric C.       Kerosene/LOX 1st   154.1 273 2677 184.6 327 3207 0.0576 Electron

RF-1V

 1       2nd         >20.5 ? ? ?
 VirginOrbit

Newton-3

 1 Gas Gen. (2)       RP-1/LOX 1st         326.9 ?     LauncherOne

Newton-4

 1 Gas Gen.        2nd         22.2 ?    
 Relativity

Aeon-1

 9x1 Open
Expander C.		        Methane/LOX      920.8     1,016.8 ?      Terran-1

Aeon-1 vac

 1                 113.0      

Aeon-R

 1              

1,147.6

             Terran-R
 ABL

E2

 9x1          Kerosene/LOX     523.1 288 2824 592.2 326 3197 0.1852 RS-1

E2 vac

 1                 66.6 330 3236 0.0206
 Ursa Major Technologies

 Ripley

 1 Staged C.       Kerosene/LOX     156       ?      

 Hadley

 1           22.2 302 2962 24.0 326 3197 0.0075