LE-9
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]
| Country of origin | Japan |
|---|---|
| Designer | JAXA |
| Manufacturer | Mitsubishi Heavy Industries |
| Application | sustainer engine |
| Associated L/V | H3 Launch Vehicle |
| Predecessor | LE-7A |
| Status | In Development |
| Liquid-fuel engine | |
| Propellant | Liquid oxygen / Liquid hydrogen |
| Mixture ratio | 5.9 |
| Cycle | Expander Bleed cycle |
| Configuration | |
| Chamber | 1 |
| Nozzle ratio | 37 |
| Performance | |
| Thrust (vac.) | 1,471 kN (331,000 lbf) |
| Thrust-to-weight ratio | 62.50 |
| Chamber pressure | 10.0 MPa (1,450 psi) |
| Isp (vac.) | 426 s (4.18 km/s) |
| Dimensions | |
| Length | 3.8 m |
| Dry weight | 2.4 t (5,300 lb) |
| Used in | |
| H3 Launch Vehicle core stage. | |
| References | |
| References | [1][2][3][4] |
See also
References
- 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.
- 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.
- 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.
- 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.
- "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
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