YF-23 (rocket engine)

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YF-23E
Country of origin China
First flight 1974-11-05
Designer Academy of Aerospace Liquid Propulsion Technology
Application Vernier engine
Associated L/V Feng Bao 1, Long March 2, Long March 3 and Long March 4
Status In Production
Liquid-fuel engine
Propellant N2O4 / UDMH
Mixture ratio 1.57
Configuration
Chamber 4
Performance
Thrust (vac.) 47.1 kN (10,600 lbf)
Isp (vac.) 297 seconds (2.91 km/s)
Burn time 300s
Used in
Long March 2F, Long March 3A, Long March 3B, Long March 3C, Long March 4B and Long March 4C second stage.
References
References [1][2][3][4]

The YF-23 is a liquid rocket vernier engine, burning N2O4 and UDMH.[5] It is used in along the YF-22 to form the YF-24 and YF-25 propulsion modules.[3][6][7][8]

Versions

The basic engine has been used since the Feng Bao 1 rocket and has been the vernier propulsion of the Long March 2, Long March 3 and Long March 4 families second stage.[1][9][10]

  • YF-23: Original version.
  • YF-23B (AKA DaFY21-1): Improved version.[9][11][12]
  • YF-23F: Improved version.[9]

Modules

This engine is bundled into modules along the YF-22 upper stage engine.[13][14][15][16]

The relevant modules for second stage application are:

  • YF-24: A module comprising an YF-22 and a single YF-23 verniers.
  • YF-24B: A module comprising an YF-22B and a single YF-23B verniers.
  • YF-24E: A module comprising an YF-22E and a single YF-23F verniers.[17]

References

  1. ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ 9.0 9.1 9.2 Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  11. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  12. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  13. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  14. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  15. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  16. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  17. ↑ Lua error in package.lua at line 80: module 'strict' not found.


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