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H-IIA Launch Vehicle

Japan's expendable H-IIA launch vehicle family, flown in multiple configurations with one LE-7A first-stage engine, one LE-5B upper-stage engine, and either two or four SRB-A solid rocket boosters.

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Identity

Aliases
H-IIAH2AH-IIA Launch Vehicle
Family Name
H-IIA
Full Name
H-IIA Launch Vehicle
Roles
-
Status
retired
Type
rocket

Details

Description
Japan's expendable H-IIA launch vehicle family, flown in multiple configurations with one LE-7A first-stage engine, one LE-5B upper-stage engine, and either two or four SRB-A solid rocket boosters.
Dimensions
Diameter
…
Length
…
First Flight Year
2,001
Last Flight Year
2,025
Propulsion Configurations
  • Entries
    • Count
      1
      Placement
      core
      Propulsion System
      Role
      main
      Stage
      first-stage
      Variant Notes
      LE-7A liquid-hydrogen/liquid-oxygen staged-combustion engine.
    • Count
      1
      Placement
      upper
      Propulsion System
      Role
      upper-stage
      Stage
      second-stage
      Variant Notes
      One LE-5B expander-bleed liquid-hydrogen/liquid-oxygen upper-stage engine. Early H-IIA upper-stage engine fit before Flight 14.
    • Count
      2
      Placement
      booster
      Propulsion System
      Role
      booster
      Stage
      first-stage
      Variant Notes
      SRB-A solid rocket boosters; standard H-IIA 202 pair.
    Name
    H-IIA 202 configuration — LE-5B upper stage
    Notes
    Early H-IIA upper-stage engine fit before Flight 14. JAXA documents the LE-5B-2 introduction from H-IIA Flight 14: https://www.rocket.jaxa.jp/rocket/engine/le5b/index.html .
  • Entries
    • Count
      1
      Placement
      core
      Propulsion System
      Role
      main
      Stage
      first-stage
      Variant Notes
      LE-7A liquid-hydrogen/liquid-oxygen staged-combustion engine.
    • Count
      1
      Placement
      upper
      Propulsion System
      Role
      upper-stage
      Stage
      second-stage
      Variant Notes
      One LE-5B-2 expander-bleed liquid-hydrogen/liquid-oxygen upper-stage engine. H-IIA upper-stage engine fit from Flight 14 onward.
    • Count
      2
      Placement
      booster
      Propulsion System
      Role
      booster
      Stage
      first-stage
      Variant Notes
      SRB-A solid rocket boosters; standard H-IIA 202 pair.
    Name
    H-IIA 202 configuration — LE-5B-2 upper stage
    Notes
    H-IIA upper-stage engine fit from Flight 14 onward. JAXA documents the LE-5B-2 introduction from H-IIA Flight 14: https://www.rocket.jaxa.jp/rocket/engine/le5b/index.html .
  • Entries
    • Count
      1
      Placement
      core
      Propulsion System
      Role
      main
      Stage
      first-stage
      Variant Notes
      LE-7A liquid-hydrogen/liquid-oxygen staged-combustion engine.
    • Count
      1
      Placement
      upper
      Propulsion System
      Role
      upper-stage
      Stage
      second-stage
      Variant Notes
      One LE-5B expander-bleed liquid-hydrogen/liquid-oxygen upper-stage engine. Early H-IIA upper-stage engine fit before Flight 14.
    • Count
      4
      Placement
      booster
      Propulsion System
      Role
      booster
      Stage
      first-stage
      Variant Notes
      SRB-A solid rocket boosters; H-IIA 204 heavy configuration.
    Name
    H-IIA 204 configuration — LE-5B upper stage
    Notes
    Early H-IIA upper-stage engine fit before Flight 14. JAXA documents the LE-5B-2 introduction from H-IIA Flight 14: https://www.rocket.jaxa.jp/rocket/engine/le5b/index.html .
  • Entries
    • Count
      1
      Placement
      core
      Propulsion System
      Role
      main
      Stage
      first-stage
      Variant Notes
      LE-7A liquid-hydrogen/liquid-oxygen staged-combustion engine.
    • Count
      1
      Placement
      upper
      Propulsion System
      Role
      upper-stage
      Stage
      second-stage
      Variant Notes
      One LE-5B-2 expander-bleed liquid-hydrogen/liquid-oxygen upper-stage engine. H-IIA upper-stage engine fit from Flight 14 onward.
    • Count
      4
      Placement
      booster
      Propulsion System
      Role
      booster
      Stage
      first-stage
      Variant Notes
      SRB-A solid rocket boosters; H-IIA 204 heavy configuration.
    Name
    H-IIA 204 configuration — LE-5B-2 upper stage
    Notes
    H-IIA upper-stage engine fit from Flight 14 onward. JAXA documents the LE-5B-2 introduction from H-IIA Flight 14: https://www.rocket.jaxa.jp/rocket/engine/le5b/index.html .
Rocket Specs
Reusability
expendable
Stages Count
2

Links

Official Url
https://global.jaxa.jp/projects/rockets/h2a/index.html
Wikipedia Url
https://en.wikipedia.org/wiki/H-IIA

Assets & Meta

Creation Time
August 13, 2026 at 21:41:05 UTC
Updated Time
October 29, 2026 at 15:33:40 UTC
H-IIA Launch Vehicle - AeroVia