H3·Mitsubishi Heavy Industries
H3-30
active
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Specifications
- Status
- active
- Height
- 63 m
- Diameter
- 5.27 m
- Mass
- 274,000 kg
- Stages
- 2
- Thrust
- 4,413 kN
- Payload to GTO
- 2,300 kg
- First flight
- 2026-06-12
- Total launches
- 1
- Success / Fail
- 1 / 0
The H3 Launch Vehicle is an expendable launch system in development in Japan. H3 rockets are liquid-propellant rockets with strap-on solid rocket boosters and are planned to be launched from the Tanegashima Space Center in Japan. Mitsubishi and the JAXA have been responsible for the design, manufacture, and operation of the H3.
Propulsion
First stage
2×LE-91,471 kN
LH2 / LOX · expander-bleed
Mitsubishi / IHIIsp 425s (vac)since 20242 or 3
Second stage
LE-5B137 kN
LH2 / LOX · expander-bleed
MitsubishiIsp 447s (vac)since 2001
Payloads it launched
6 loaded