# Delta N

> American expendable launch vehicle

**Wikidata**: [Q49555](https://www.wikidata.org/wiki/Q49555)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Delta_N)  
**Source**: https://4ort.xyz/entity/delta-n

## Summary
Delta N is an American expendable launch vehicle, part of the Thor-Delta class of rockets. It was developed by the United States and used for various space missions, including deploying satellites like Orbiting Solar Observatory 7 and OSO 6. The rocket is distinct from the N-I model and has a separate identity in the space launch history of the United States.

## Key Facts
- Delta N is an American expendable launch vehicle.
- It is a subclass of the Thor-Delta rocket family.
- Delta N is distinct from the N-I model.
- The rocket was used to launch satellites such as Orbiting Solar Observatory 7 and OSO 6.
- Delta N has a Wikipedia page in multiple languages, including English, Galician, Hebrew, Polish, Portuguese, and Russian.
- The rocket's country of origin is the United States.
- Delta N has a Wikimedia Commons category dedicated to it.
- It was used in conjunction with other satellites and research projects, including TETR 4, PAC-A, TD-1A, Biosatellite 3, ESSA-8, and ESSA-7.

## FAQs
**What type of rocket is Delta N?**
Delta N is an American expendable launch vehicle, specifically a subclass of the Thor-Delta rocket family. It is distinct from the N-I model and was used for deploying various satellites and research projects.

**Which country developed Delta N?**
Delta N was developed by the United States. It is part of the country's space launch vehicle history, alongside other notable projects like the Orbiting Solar Observatory 7 and OSO 6.

**What are some notable missions launched by Delta N?**
Delta N was used to launch satellites such as Orbiting Solar Observatory 7 and OSO 6. It also supported other research projects, including TETR 4, PAC-A, TD-1A, Biosatellite 3, ESSA-8, and ESSA-7.

**How does Delta N differ from the N-I model?**
Delta N is distinct from the N-I model, as indicated by the "different_from" property in the source material. This suggests that while both are related to the Thor-Delta family, they have separate identities and uses in space missions.

**What languages are available for Delta N's Wikipedia page?**
Delta N's Wikipedia page is available in multiple languages, including English, Galician, Hebrew, Polish, Portuguese, and Russian. This indicates its significance and widespread interest in the global space community.

## Why It Matters
Delta N played a significant role in the United States' space exploration efforts, particularly in the deployment of scientific satellites and research projects. Its use in launching missions like Orbiting Solar Observatory 7 and OSO 6 contributed to advancements in solar observation and space science. Additionally, its association with other projects such as TETR 4, PAC-A, TD-1A, Biosatellite 3, ESSA-8, and ESSA-7 highlights its versatility and importance in the broader context of American space technology. The rocket's distinct identity within the Thor-Delta family further underscores its unique contributions to the field of space launch vehicles.

## Notable For
- Being part of the Thor-Delta rocket family, which includes other notable American launch vehicles.
- Launching the Orbiting Solar Observatory 7 and OSO 6, contributing to solar science and space observation.
- Supporting diverse research projects, including TETR 4, PAC-A, TD-1A, Biosatellite 3, ESSA-8, and ESSA-7.
- Having a distinct identity separate from the N-I model, indicating its unique role in American space missions.
- Being documented in multiple languages on Wikipedia, reflecting its global significance in the space community.

## Body
### Overview
Delta N is an American expendable launch vehicle, classified as a subclass of the Thor-Delta rocket family. It is distinct from the N-I model and was used for various space missions, including the deployment of satellites and research projects. The rocket's development and use are tied to the United States' broader space exploration efforts, as evidenced by its association with notable missions and projects.

### Development and Classification
Delta N is part of the Thor-Delta class of rockets, which includes other American expendable launch systems. Its distinct identity from the N-I model highlights its unique role within this family. The rocket's development and use are closely linked to the United States' space program, as indicated by its country of origin and its association with other American space missions.

### Notable Missions
Delta N was used to launch several significant satellites and research projects, including:
- Orbiting Solar Observatory 7, a solar space observatory.
- OSO 6, another solar space observatory.
- TETR 4, a related project.
- PAC-A, another associated mission.
- TD-1A, an astrophysical research satellite.
- Biosatellite 3, a satellite used for biological research.
- ESSA-8 and ESSA-7, former American weather satellites.

These missions demonstrate Delta N's versatility and importance in the field of space exploration.

### Documentation and Recognition
Delta N's Wikipedia page is available in multiple languages, including English, Galician, Hebrew, Polish, Portuguese, and Russian. This indicates its widespread recognition and interest in the global space community. Additionally, Delta N has a dedicated category on Wikimedia Commons, further highlighting its significance in the field of space technology.

### Significance in Space History
Delta N's role in launching satellites and research projects contributes to the broader history of American space exploration. Its association with missions like Orbiting Solar Observatory 7 and OSO 6 underscores its importance in advancing solar science and space observation. The rocket's use in conjunction with other projects, such as TETR 4, PAC-A, TD-1A, Biosatellite 3, ESSA-8, and ESSA-7, further demonstrates its versatility and impact on the field.