Rocket file · LV-340
Mu-4S
Mu-4S is an expendable launch vehicle built by Institute of Space and Astronautical Science. It stands 23.6 m tall, lifts 180 kg to low Earth orbit, first flew on 25 September 1970. It has flown 4 times with 3 successes, a success rate of 75.0%. 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 Mu-4S
The Mu, also known as M, was a series of Japanese solid-fuelled carrier rockets, which were launched from Uchinoura between 1966 and 2006. Originally developed by Japan's Institute of Space and Astronautical Science, Mu rockets were later operated by Japan Aerospace Exploration Agency following ISAS becoming part of it.
Upcoming flights
Manifest
Mu-4S is retired, and no flight is filed.
All upcoming launchesMu-4S 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 Mu-4S flown?
- 4 times, with 3 successes and 1 failures.
- What is Mu-4S's success rate?
- 75.0%. That's 3 successful flights out of 4 attempts.
- How much can Mu-4S lift to orbit?
- Launch Library 2 lists Mu-4S at 180 kg to low Earth orbit.
- Is Mu-4S reusable?
- No. Launch Library 2 lists Mu-4S as expendable, so no stage is recovered to fly again.