LE-9

Summary

LE-9
Country of originJapan
DesignerJAXA
ManufacturerMitsubishi Heavy Industries
Applicationsustainer engine
Associated LVH3 Launch Vehicle
PredecessorLE-7A
StatusIn Development
Liquid-fuel engine
PropellantLiquid oxygen / Liquid hydrogen
Mixture ratio5.9
CycleExpander Bleed cycle
Configuration
Chamber1
Nozzle ratio37
Performance
Thrust (vacuum)1,471 kN (331,000 lbf)
Thrust-to-weight ratio62.50
Chamber pressure10.0 MPa (1,450 psi)
Specific impulse (vacuum)426 s (4.18 km/s)
Dimensions
Length3.8 m
Dry weight2.4 t (5,300 lb)
Used in
H3 Launch Vehicle core stage.
References
References[1][2][3][4]

The LE-9 is a liquid cryogenic rocket engine burning liquid hydrogen and liquid oxygen in an expander bleed cycle. Two or three will be used to power the core stage of the H3 launch vehicle.[1][2][5]

See also

References

  • Japanese Wikipedia LE-X (in Japanese)
  1. ^ a b Atsumi, Masahiro; Yoshikawa, Kimito; Ogawara, Akira; Onga, Tadaoki (December 2011). "Development of the LE-X Engine" (pdf). MHI Technical Review. 48 (4): 36–43. Retrieved 2015-07-08.
  2. ^ a b Kumada, Nobuhiko; Ogawara, Akira; Manako, Hiroyasu; Onga, Tadaoki; Sunakawa, Hideo; Kurosu, Akihide; Iizuka, Nobuyuki; Noda, Keiichiro; Okita, Koichi (2010-07-26). "Highly Reliable Design Approaches for Next Booster Engine LE-X" (pdf). 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. 46 (AIAA 2010-6853). Retrieved 2015-07-08.
  3. ^ Watanabe, Daiki; Imai, Kazuhiro; Ogawara, Akira; Yamanishi, Nobuhiro; Neghishi, Hideyo; Kawatsu, Kaname; Kurosu, Akihide; Noda, Keiichiro (2011-07-31). "Application of High Fidelity Simulation to LE-X Engine Development" (pdf). 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. 47 (AIAA 2011-5930). Retrieved 2015-07-08.
  4. ^ Daiki, Watanabe; Manako, Hiroyasu; Onga, Tadaoki; Tamura, Takashi; Ikeda, Kazufumi; Isono, Mitsunori (December 2016). "Combustion Stability Improvement of LE-9 Engine for Booster Stage of H3 Launch Vehicle" (pdf). MHI Technical Review. 53 (4): 28–35. Retrieved 2017-06-29.
  5. ^ "2020年:H3ロケットの目指す姿" [2020: H3 projected debut date] (pdf) (in Japanese). JAXA. 2015-07-08. Retrieved 2015-07-08.

External links

  • Mitsubishi Heavy Industries Ltd. Rocket Engines