# M-3S

> Japanese carrier rocket

**Wikidata**: [Q11230714](https://www.wikidata.org/wiki/Q11230714)  
**Source**: https://4ort.xyz/entity/m-3s

## Summary
The M-3S is a Japanese solid-fueled carrier rocket, part of the larger Mu rocket family developed by Japan for launching small satellites into orbit. It was primarily used during the late 1970s and early 1980s. The M-3S played a key role in advancing Japan's early space capabilities.

## Key Facts
- Instance of: Rocket model  
- Subclass of: Mu-class rockets  
- Country of origin: Japan  
- Aliases: Mu-3S, M-3S  
- Related launch vehicles: Tansei 4  
- Notable payloads: Hinotori, Tenma, Ohzora  
- Wikidata description: Japanese carrier rocket  
- Image: [M-3S-3.jpg](https://commons.wikimedia.org/wiki/Special:FilePath/M-3S-3.jpg)  
- Commons category: M-3S  
- Wikipedia languages: Commons, Japanese, Polish  

## FAQs
### Q: What is the M-3S rocket?
A: The M-3S is a Japanese solid-fuel carrier rocket developed under the Mu rocket program. It was designed to launch lightweight scientific satellites into low Earth orbit.

### Q: When was the M-3S used?
A: The M-3S was active in the late 1970s and early 1980s. Specific launches occurred between 1978 and 1982.

### Q: What missions used the M-3S?
A: The M-3S launched several notable satellites including Hinotori, Tenma, and Ohzora, which were used for solar physics and ionospheric research.

## Why It Matters
The M-3S represents an important step in Japan’s early space exploration efforts. As part of the Mu-series, it demonstrated Japan's growing capability to independently develop and deploy space launch systems. Its successful flights enabled critical scientific missions that advanced understanding of solar activity and Earth’s upper atmosphere. Though retired, the M-3S contributed foundational experience that influenced later Japanese rocket designs such as the M-V and Epsilon launchers.

## Notable For
- Being among the first domestically produced Japanese solid-fueled orbital launchers  
- Successfully deploying multiple scientific satellites including Hinotori and Tenma  
- Serving as a transitional design within the broader Mu rocket development lineage  
- Demonstrating reliable performance with limited but impactful flight history  

## Body
### Development and Design
The M-3S was developed by Japan's Institute of Space and Astronautical Science (ISAS), now part of JAXA. It was derived from earlier models in the Mu series and optimized for launching small scientific payloads into low Earth orbit using solid propellant technology.

### Launch History
The M-3S conducted five orbital launches between February 1978 and August 1982. All launches took place from the Uchinoura Space Center in Kagoshima Prefecture, Japan.

### Missions and Payloads
Notable payloads launched by the M-3S include:
- **Hinotori** – A solar observation satellite launched in 1981
- **Tenma** – An X-ray astronomy satellite launched in 1983
- **Ohzora** – A mission focused on studying the ionosphere, launched in 1984

These missions significantly contributed to solar and atmospheric science during their operational periods.

### Legacy
Following its retirement, the M-3S served as a technological foundation for more advanced solid-fueled rockets like the M-V, which supported larger payloads and more complex missions in subsequent decades.

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