H3

active

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Specifications

Status: active
Height: 63 m
Diameter: 5.27 m
Mass: 574,000 kg
Stages: 2
Thrust: 2,942 kN
Payload to GTO: 6,500 kg
First flight: 2028-03-31
Total launches: 0
Success / Fail: 0 / 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