Rocket file · LV-319
H-I
H-I is an expendable launch vehicle built by Mitsubishi Heavy Industries. It stands 42.0 m tall, lifts 3,200 kg to low Earth orbit, first flew on 12 August 1986. It has flown 9 times with 9 successes, a success rate of 100.0%. It has nothing on the Launch Library 2 schedule right now.
Specification
Vehicle spec sheet
As listed by Launch Library 2. The cost is Launch Library’s figure, not a quoted price. Figures for rockets outside the sixty most-flown were last read on 2026-11-05.
Flight record
Reliability
About H-1
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.
Upcoming flights
Manifest
H-1 is retired, and no flight is filed.
All upcoming launchesH-I in the archive
From NASA's public image library and Wikimedia Commons. Each photo shows the credit its licence asks for and links back to where it came from.
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Common questions
- How many times has H-I flown?
- 9 times, with 9 successes and 0 failures.
- What is H-I's success rate?
- 100.0%. That's 9 successful flights out of 9 attempts.
- How much can H-I lift to orbit?
- Launch Library 2 lists H-I at 3,200 kg to low Earth orbit and 1,100 kg to geostationary transfer orbit.
- Is H-I reusable?
- No. Launch Library 2 lists H-I as expendable, so no stage is recovered to fly again.