KerbalX

Description

The H–I or H–1 was a Japanese liquid-fuelled carrier rocket, consisting of a licence-produced American first stage and set of booster rockets, and all-Japanese upper stages. The H in the name represented the use of liquid hydrogen fuel in the second stage. It was launched nine times between 1986 and 1992. It replaced the N-II, and was subsequently replaced by the H-II, which used the same upper stages with a Japanese first stage.

The first stage of the H–I was a licence-built version of the Thor-ELT, which was originally constructed for the US Delta 1000 rocket. The stage had already been produced under licence in Japan for the N-I and N-II rockets. The second stage was entirely Japanese, using an LE-5 engine, the first rocket engine in Japan to use a cryogenic fuel. On launches to Geosynchronous transfer orbits, a Nissan–built UM-69A solid motor was used as a third stage. Depending on the mass of the payload, either six or nine US Castor 2 SRMs were used as booster rockets.

A mod rocket called H-I. Built with 28 of the finest parts, its root part is h2.payload.adapter.s1p2.1.

Built in the VAB in KSP version 1.12.3.

Details

• Type: VAB
• Class: lifter
• Part Count: 28
• Mods: 3
• KSP: 1.12.3

Mods

• Bluedog DB
• Gemstone LV
• conformaldecals