H-II Launch Vehicle
H-II was Japan's first large launch vehicle developed with domestically produced liquid-propellant stages. The two-stage hydrogen-oxygen rocket used an LE-7 first-stage engine, an LE-5A upper-stage engine, and two solid rocket boosters. Seven orbital vehicles flew from 1994 through 1999; the planned No. 7 was cancelled after the No. 5 orbital-injection shortfall and No. 8 launch failure.
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Identity
- Aliases
- H-II original configurationH-2H-II rocket
- Family Name
- H-II
- Full Name
- H-II Launch Vehicle
- Status
- retired
- Type
- rocket
Details
- Description
- H-II was Japan's first large launch vehicle developed with domestically produced liquid-propellant stages. The two-stage hydrogen-oxygen rocket used an LE-7 first-stage engine, an LE-5A upper-stage engine, and two solid rocket boosters. Seven orbital vehicles flew from 1994 through 1999; the planned No. 7 was cancelled after the No. 5 orbital-injection shortfall and No. 8 launch failure.
- Dimensions
- Diameter M
- 4
- Height M
- 50
- First Flight Year
- 1,994
- Last Flight Year
- 1,999
- Manufacturer
- Operator
- Parent Vehicle Family
- Propulsion Configurations
- Entries
- Nested value
- Nested value
- Nested value
- Rocket Specs
- Liftoff Mass Kg
- 260,000
- Reusability
- expendable
- Stages Count
- 2
- Strap On Boosters Count
- 2
Links
- Official Url
- https://global.jaxa.jp/projects/rockets/h2/
- Wikipedia Url
- https://en.wikipedia.org/wiki/H-II
Assets & Meta
- Creation Time
- July 14, 2026 at 08:00:43 UTC
- Updated Time
- July 29, 2026 at 15:38:13 UTC
- Image
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Other
- Search Name
- H-II Launch Vehicle H-II original configuration H-2 H-II rocket