YF-40

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YF-40B
Country of origin China
First flight 1995-06-01
Designer Academy of Aerospace Liquid Propulsion Technology
Associated L/V Long March 1D, Long March 4
Status In Production
Liquid-fuel engine
Propellant N2O4 / UDMH
Mixture ratio 2.14
Cycle Gas Generator
Configuration
Chamber 2
Nozzle ratio 55
Performance
Thrust (vac.) 103 kN (23,000 lbf)
Chamber pressure 4.6 MPa (670 psi)
Isp (vac.) 303 seconds (2.97 km/s)
Burn time 412s
Gimbal range ±4.5°
Dimensions
Length 120 centimetres (47 in)
Diameter 63 centimetres (25 in)
Dry weight 83 kg (183 lb)
Used in
Long March 1D second stage and Long March 4 third stage.
References
References [1][2][3][4][5][6]

The YF-40 is a Chinese liquid rocket engine burning N2O4 and UDMH in an gas generator cycle. It has dual gimbaling combustion chambers.

Originally it was developed for the Long March 1D second stage.[6] It is used on the third stage of the Long March 4 family of launch vehicles.[1][3][7]

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. ↑ 6.0 6.1 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.

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