Variants of the Soviet rocket engine Kuznetsov NK
(parameters and images)

NK-9 type

Engine

NK-9

NK-9V

NK-19

NK-21

NK-35 (LH2/LOX)

NK-31

NK-39

NK-39K

Index

8D517

 

11D53

11D59

 ?

11D114

11D113

 ?

Use

GR-1 ICBM GR-1 ICBM N-1 N-1 UR-700 N-1F N-1F Spaceplane

Stage

1 2 4 3  ? 4 3 1

Thrust s.l. (t)

38

-

 -  - -  -  - 29.8

Thrust vac (t)

43.5

46

46

41

200 41 41.5  37.7

Isp s.l. (sec)

286.5

-

- - - - - 255.1

Isp vac (sec)

328

345

345 340 ? 353 352 322.7

Chamber pressure

7.85 MPa 7.85 MPa ?  ? ? 9.20 MPa 9.20 MPa 9.20 MPa

Nozzle area ratio

 ? ? ? ?   ? 114 ?

Flow rate (kg/sec)

132.6

133.3

133.3 120.6   116.1 117.9

 116.8

O/F mix

2.50 2.50 2.50 2.50   2.60 2.60

 2.60

Image



 ?




 ?   ? not realized

 

  without nozzle

NK-15 type

Engine

NK-15

NK-15V

NK-33

NK-33-1

NK-33M

 NK-33MN

NK-43

NK-43M

Index

11D51

11D52

11D111

 

 

 

11D112

 

Use

N-1 N-1 N-1F, Soyuz-1 Soyuz Yamal Polyot Air launch N-1F Polyot Air launch

Stage

1 2 1  1 1 1 2 1

Thrust s.l. (t)

140.6

-

 154  185 ~169.2 ~176.7  - -

Thrust vac (t)

     157.4**

     168**

 171.5  202.6 188 196 179.2 212

Isp s.l. (sec)

 284

-

 297.2  304.9 ~306 ~311 - -

Isp vac (sec)

      318**

     325**

331 333.9 ~340 ~345 346 349

Chamber pressure

      ?

?

14.54 MPa

17.16 MPa

? ? 14.57 MPa

17.16 MPa

Nozzle area ratio

    27.7 ~71.9     79.7 79.7

Flow rate (kg/sec)

 495.0

 516.9

 517.9

 606.8

 

   517.9

607.4

O/F mix

 2.50

 2.50

 2.60

2.60

2.60

2.60 2.80 2.80

Image





? ?
?
 source: alabin.ru source: alabin.ru   modified NK-33
 with nozzle extension
similar NK-33 similar NK-33    similar NK-43

**Source: Mark Wade (Astronautix)
 Note: All other informations for NK-15 and NK-15V are obviously not correct. For NK-15/NK-33 and NK-15V/NK-43 used mostly identical data. That must be wrong because the old and the new engines are significantly different from each other (compare the images).

Derivative

Engine

AJ-26-58

 AJ-26-59

AJ-26-60

AJ-26-62

Index

 (NK-33)

 (NK-33)

 (NK-43)

 (NK-33)

Use

Kistler K-1 Kistler K-1 Kistler K-1 Antares

Stage

1 1 2 1

Thrust s.l. (t)

 154.2  154.2  - 154.2 / 166.5

Thrust vac (t)

 171.9  171.9 180.4 171.4 / 185.1

Isp s.l. (sec)

 297.2  297.2 - 300.4

Isp vac (sec)

331.3 331.3 348.3 334

Chamber pressure

14.54 MPa 14.54 MPa 14.57 MPa 14.54 / 15.70 MPa

Nozzle area ratio

27.7 27.7 79.7 27.7

Flow rate (kg/sec)

 518.8  518.8  517.9  513.2 /554.2

O/F mix

 2.60  2.60  2.80  2.60

Image


?

 similar NK-33  similar AJ-26-58
restartable
 similar NK-43
restartable
modified NK-33
throttle to 108% thrust