H-I Vehicle Overview

A complete overview of the H-I launch vehicle, including launch stats, vehicle info and launch locations.

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Basic Info

Name

H-I

Family

H-I

First Launch

12 Aug 1986

Successful Launches

9

Failed Launches

0

Rocket Info

Status

Inactive

Stages

2-3

Length

42 m

Diameter

2.44 m

Launch Mass

142 tons

Reusability

Not Reusable

Payload Info

LEO Capacity

3,200 kg

GTO Capacity

1,100 kg

The H-1 was a Japanese liquid-fuelled carrier rocket, consisting of a license-produced American First Stage and set of booster rockets and all-Japanese upper stages. It replaced the N-II and was subsequently replaced by the H-2 which has the same upper stages with a Japaense first stage.

Launch Sites used by H-I

Tanegashima Space Center

Tanegashima Space Center launch site

Japan's largest rocket-launch complex, featuring cutting-edge facilities and a comprehensive space museum.

📍 Japan
🚀 92 Launches

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