H-II·Mitsubishi Heavy Industries
H-IIB 304
retired
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Specifications
- Status
- retired
- Height
- 56.6 m
- Diameter
- 5.2 m
- Mass
- 551,000 kg
- Stages
- 2
- Thrust
- 9,000 kN
- Payload to LEO
- 16,500 kg
- Payload to GTO
- 8,000 kg
- First flight
- 2009-09-10
- Total launches
- 9
- Success / Fail
- 9 / 0
H-IIB (H2B) is an expendable launch system used to launch H-II Transfer Vehicles (HTV, or Kounotori) towards the International Space Station. H-IIB rockets are liquid-fuelled with solid-fuel strap-on boosters and are launched from the Tanegashima Space Center in Japan. Mitsubishi and JAXA have been primarily responsible for design, manufacture, and operation of H-IIB.
Propulsion
First stage
2×LE-7A870 kN
LH2 / LOX · staged-combustion
Mitsubishi / IHIIsp 440s (vac)since 2001
Second stage
LE-5B137 kN
LH2 / LOX · expander-bleed
MitsubishiIsp 447s (vac)since 2001
Payloads it launched
9 loaded