# Delta IV

> expendable launch system in the Delta rocket family

**Wikidata**: [Q49543](https://www.wikidata.org/wiki/Q49543)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Delta_IV)  
**Source**: https://4ort.xyz/entity/delta-iv

## Summary
Delta IV is an expendable launch system in the Delta rocket family, developed to carry payloads into orbit. It was first launched on November 20, 2002, and was manufactured by Boeing Defense, Space & Security until 2006, after which United Launch Alliance took over production.

## Key Facts
- First flight: November 20, 2002
- Manufacturer: Boeing Defense, Space & Security (2002-2006), United Launch Alliance (2006-present)
- Part of: Delta rocket family
- Classification: Medium-lift launch vehicle
- Has part: Common Booster Core
- Country of origin: United States
- Variants include: Delta IV Medium, Delta IV Medium+(4,2), Delta IV Medium+(5,2), Delta IV Medium+(5,4), Delta IV Small (cancelled), Delta IV Heavy
- Website: https://www.ulalaunch.com/rockets/delta-iv
- Aliases: Delta-4, Delta 9000, دلتا ٤

## FAQs
### Q: What is Delta IV?
A: Delta IV is an expendable launch system in the Delta rocket family, designed to carry payloads into orbit. It was first launched in 2002 and is manufactured by United Launch Alliance.

### Q: Who manufactures Delta IV?
A: Delta IV was initially manufactured by Boeing Defense, Space & Security from 2002 to 2006, after which United Launch Alliance became the manufacturer.

### Q: What are the variants of Delta IV?
A: Delta IV variants include the Medium, Medium+(4,2), Medium+(5,2), Medium+(5,4), Small (cancelled), and Heavy configurations.

## Why It Matters
Delta IV represents a significant advancement in expendable launch systems, providing reliable access to space for a variety of payloads. As part of the Delta rocket family, it offers multiple configurations to meet different mission requirements, from medium-lift to heavy-lift capabilities. The system's development and evolution reflect the ongoing need for versatile, dependable launch vehicles in the competitive space industry. Delta IV's role in supporting national security, scientific, and commercial missions underscores its importance in maintaining and expanding space capabilities.

## Notable For
- First flight in 2002, marking the beginning of a new generation of Delta launch vehicles
- Multiple configurations including the heavy-lift Delta IV Heavy variant
- Use of the Common Booster Core design for modular flexibility
- Transition from Boeing to United Launch Alliance manufacturing
- Support for critical national security and scientific missions

## Body
### Development and History
Delta IV was developed as part of the Delta rocket family, with its first flight occurring on November 20, 2002. The system was designed to provide a modern, versatile launch capability for a range of payloads.

### Manufacturing
Initially manufactured by Boeing Defense, Space & Security from 2002 to 2006, production of Delta IV was transferred to United Launch Alliance in 2006, where it remains the current manufacturer.

### Variants and Configurations
The Delta IV family includes several variants:
- Delta IV Medium
- Delta IV Medium+(4,2)
- Delta IV Medium+(5,2)
- Delta IV Medium+(5,4)
- Delta IV Small (cancelled before production)
- Delta IV Heavy

### Technical Specifications
Delta IV is classified as a medium-lift launch vehicle and incorporates the Common Booster Core as a key component. This modular design allows for flexibility in configuring the launch system to meet specific mission requirements.

### Applications
Delta IV has been used for a variety of missions, including national security launches, scientific payloads, and commercial satellite deployments. Its versatility and reliability have made it a valuable asset in the space launch industry.

## Schema Markup
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  "@type": "Thing",
  "name": "Delta IV",
  "description": "Expendable launch system in the Delta rocket family",
  "url": "https://www.ulalaunch.com/rockets/delta-iv",
  "sameAs": [
    "https://en.wikipedia.org/wiki/Delta_IV",
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  "additionalType": "Rocket Series"
}

## References

1. Freebase Data Dumps. 2013
2. Quora