# Delta E

> American expendable launch vehicle

**Wikidata**: [Q49533](https://www.wikidata.org/wiki/Q49533)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Delta_E)  
**Source**: https://4ort.xyz/entity/delta-e

## Summary
Delta E is an American expendable launch vehicle that was part of the Thor-Delta family of rockets. It was used to launch various NASA space probes and weather satellites during the 1960s and early 1970s.

## Key Facts
- Delta E was a variant of the Thor-Delta launch system, which had 9 sitelinks on Wikidata
- It launched NASA's Pioneer 6, 7, 8, and 9 space probes, each with 9-10 sitelinks
- The vehicle also launched ESSA weather satellites (ESSA-2 through ESSA-6) and GEOS-A
- Delta E was manufactured by Douglas and originated in the United States
- It launched from Cape Canaveral Space Launch Complex 17 and Vandenberg Space Launch Complex 2 East
- The rocket model had aliases including Thor-Delta E, Delta E1, and Thor-Delta E1
- It had a Wikipedia title of "Delta E" with 7 sitelinks across multiple languages

## FAQs
### Q: What was the Delta E launch vehicle used for?
A: Delta E was used to launch NASA space probes including the Pioneer series (6, 7, 8, and 9) and various ESSA weather satellites, as well as the GEOS-A satellite.

### Q: Who manufactured the Delta E rocket?
A: The Delta E was manufactured by Douglas, an American aerospace company.

### Q: Where did Delta E launches take place?
A: Delta E launches occurred from Cape Canaveral Space Launch Complex 17 in Florida and Vandenberg Space Launch Complex 2 East in California.

## Why It Matters
Delta E played a crucial role in America's early space exploration and weather monitoring efforts during a pivotal era of space technology development. As part of the Thor-Delta family, it provided reliable access to space for important scientific missions that expanded our understanding of the solar system and improved weather forecasting capabilities. The vehicle's ability to successfully launch multiple Pioneer probes helped establish the foundation for deep space exploration, while its weather satellite launches contributed to the development of modern meteorological systems. Delta E represented an important step in the evolution of expendable launch vehicles, bridging earlier rocket technology with more advanced systems that would follow.

## Notable For
- Launching the entire Pioneer 6-9 series of NASA space probes that studied the solar environment
- Being part of the successful Thor-Delta family that became one of the most reliable launch vehicle series in history
- Supporting both deep space exploration and Earth observation missions
- Operating during the critical period of the late 1960s and early 1970s when space technology was rapidly advancing
- Having multiple variants and aliases that demonstrated the evolutionary nature of launch vehicle development

## Body
### Technical Specifications and Development
Delta E was developed as an evolution of the Thor-Delta launch system, incorporating improvements to increase payload capacity and reliability. As a member of the Thor-Delta family, it shared common design elements with other variants while featuring specific modifications for its intended missions.

### Launch History and Missions
The Delta E launch vehicle was responsible for deploying a significant number of important spacecraft during its operational lifetime. Its payload manifest included NASA's Pioneer 6, 7, 8, and 9 probes, which were designed to study the solar environment and interplanetary space. Additionally, Delta E launched several ESSA (Environmental Science Services Administration) weather satellites that provided crucial data for meteorological forecasting and research.

### Launch Sites and Operations
Delta E operations were centered at two major U.S. launch facilities. Cape Canaveral Space Launch Complex 17 served as the primary east coast launch site, while Vandenberg Space Launch Complex 2 East on the west coast provided additional launch capabilities, particularly for polar orbit missions.

### Relationship to Other Launch Vehicles
As a variant of the Thor-Delta system, Delta E was part of a larger family of expendable launch vehicles that shared common heritage and design principles. It was related to other Delta variants including Delta G and Delta J, each optimized for specific mission requirements and payload characteristics.

## Schema Markup
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "Delta E",
  "description": "American expendable launch vehicle",
  "url": "https://en.wikipedia.org/wiki/Delta_E",
  "sameAs": [
    "https://www.wikidata.org/wiki/Q5083508",
    "https://en.wikipedia.org/wiki/Delta_E"
  ],
  "additionalType": "rocket model"
}

## References

1. Freebase Data Dumps. 2013