# Scout B

> rocket model

**Wikidata**: [Q10368958](https://www.wikidata.org/wiki/Q10368958)  
**Source**: https://4ort.xyz/entity/scout-b

## Summary
Scout B is an American rocket model and a member of the Scout family of launch vehicles. It was primarily used to deploy scientific, atmospheric, and research satellites for NASA, the United States Air Force, and various international space organizations.

## Key Facts
- **Classification:** Rocket model and subclass of the Scout family of American rockets.
- **Country of Origin:** United States.
- **Primary Payloads:** Scientific research satellites, including the Explorer program and the OV3 series.
- **Notable Missions:** Launched Uhuru, the first satellite dedicated specifically to X-ray astronomy.
- **International Partners:** Facilitated launches for Italy (San Marco), Germany (Azur), and the European Space Research Organization (ESRO).
- **Biological Research:** Used for the Orbiting Frog Otolith program, which sent frogs into orbit.
- **Military Use:** Deployed US Air Force satellites such as the SECOR 5 geodetic satellite and the OV3 series.

## FAQs
### Q: What was the primary purpose of the Scout B rocket?
A: Scout B was designed as a launch vehicle for small-to-medium scientific and research satellites. It supported a wide range of missions, from atmospheric and ionospheric studies to biological research and X-ray astronomy.

### Q: Which international satellites were launched by Scout B?
A: The rocket launched several significant international payloads, including Azur (Germany's first scientific satellite), the San Marco 2 and 3 satellites for Italy, and multiple research satellites for the European Space Research Organization (ESRO).

### Q: Did the Scout B rocket have any notable mission failures?
A: Yes, the source material identifies that the ESRO-2A research satellite was lost due to a launch failure. However, its successor, ESRO-2B, was successfully launched and operated as a research satellite.

## Why It Matters
Scout B served as a vital workhorse for the international scientific community during the mid-to-late 20th century. As a specialized subclass of the Scout rocket family, it provided a reliable means for researchers to reach orbit without the need for larger, more expensive heavy-lift vehicles. Its legacy is defined by its contribution to foundational space science; it was responsible for launching Uhuru, the mission that pioneered X-ray astronomy, and Azur, which marked Germany's first foray into satellite-based scientific research.

The rocket's versatility allowed it to bridge the gap between civilian, military, and international interests. It supported NASA’s Explorer program and biological studies like the Orbiting Frog Otolith, while simultaneously serving the US Air Force’s technical requirements through the OV3 and SECOR programs. By providing launch services to the European Space Research Organization and Italy’s San Marco program, Scout B played a significant role in fostering global cooperation in space exploration. Its ability to deliver diverse payloads—ranging from atmospheric sensors to geodetic tools—made it an essential component in the early mapping and understanding of the Earth's upper atmosphere and the broader universe.

## Notable For
- **X-ray Astronomy Pioneer:** Launched Uhuru, the first satellite specifically designed to map the sky in X-ray wavelengths.
- **International Firsts:** Deployed Azur, the first scientific satellite developed by Germany.
- **Biological Research:** Successfully carried the Orbiting Frog Otolith (OFO) into orbit for NASA biological experiments.
- **Multi-Agency Utility:** Served as a common launch platform for NASA, the US Air Force, and the European Space Research Organization (ESRO).

## Body

### Classification and Development
Scout B is a specific model within the Scout class of American rockets. It is categorized as a subclass of the broader Scout family, a group of launch vehicles known for their role in American space efforts. The rocket was developed in the United States to provide a cost-effective solution for orbital research missions.

### Scientific and Astronomical Payloads
The Scout B was instrumental in several high-profile scientific missions:
*   **Uhuru:** This mission was the first satellite launched specifically for X-ray astronomy, representing a major milestone in space-based observation.
*   **Explorer Program:** The rocket launched several NASA Explorer satellites, including Explorer 39, Explorer 45, and the Solrad 9 and 10 solar radiation satellites.
*   **Biological Studies:** It was the launch vehicle for the Orbiting Frog Otolith (OFO), a NASA program that sent frogs into space to study the effects of weightlessness.

### International and European Missions
Scout B was a frequent choice for international space agencies:
*   **ESRO:** It launched multiple satellites for the European Space Research Organization, including ESRO-1A, ESRO-1B, and ESRO-2B. The ESRO-2A satellite was notably lost during a Scout B launch failure.
*   **Italy:** The rocket deployed the San Marco 2 and San Marco 3 satellites for the Italian space program.
*   **Germany:** It was responsible for the successful orbit of Azur, Germany's inaugural scientific satellite.
*   **France:** It launched the EOLE 1 communications satellite.

### Military and Technical Research
The US Air Force utilized Scout B for several technical satellite series:
*   **OV3 Series:** The rocket launched satellites OV3-1 through OV3-6. These were designed for various measurements; for instance, OV3-6 measured neutral density ion composition and electron density at altitudes between 200 and 400 km.
*   **SECOR 5:** Scout B deployed this American military geodetic satellite to assist in precise geographical mapping.
*   **P76-5:** Another technical payload launched by the Scout B model.

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