# Delta IV Medium+(4,2)

> variant of the Delta IV space launch vehicle

**Wikidata**: [Q20574406](https://www.wikidata.org/wiki/Q20574406)  
**Source**: https://4ort.xyz/entity/delta-iv-medium-4-2

## Summary
The Delta IV Medium+(4,2) is a variant of the Delta IV space launch vehicle, part of the Delta rocket family. It is an expendable launch system used for deploying satellites into orbit.

## Key Facts
- The Delta IV Medium+(4,2) is classified as a rocket model and is a subclass of the Delta IV launch system.
- It has alternative names including Delta 9240 and Delta-4M+(4,2).
- The launch vehicle has been used to deploy various satellites including GPS navigation satellites, reconnaissance satellites, and weather satellites.
- It has been utilized by the United States Air Force and U.S. Space Force for military and government satellite launches.
- The Delta IV Medium+(4,2) is described in multiple languages, with Latvian (lv) being one of the Wikipedia languages that includes information about it.

## FAQs
### Q: What is the Delta IV Medium+(4,2) used for?
A: The Delta IV Medium+(4,2) is used as a space launch vehicle to deploy satellites into orbit, including GPS navigation satellites, reconnaissance satellites, and weather satellites for military and government purposes.

### Q: How does the Delta IV Medium+(4,2) relate to other Delta IV variants?
A: The Delta IV Medium+(4,2) is a specific variant within the Delta IV family of expendable launch systems, distinguished by its configuration and payload capacity compared to other Delta IV models.

### Q: Who manufactures the Delta IV Medium+(4,2)?
A: The Delta IV Medium+(4,2) is manufactured by Boeing as part of the Delta IV launch vehicle family, which was developed for both commercial and government space launch needs.

## Why It Matters
The Delta IV Medium+(4,2) plays a crucial role in national security and space operations by providing reliable access to space for critical U.S. government payloads. As a variant of the Delta IV family, it represents an important capability in the nation's space launch infrastructure, enabling the deployment of GPS satellites that form the backbone of global navigation systems, reconnaissance satellites that provide vital intelligence gathering, and weather satellites that support both military operations and civilian forecasting. The launch vehicle's ability to deliver these payloads to precise orbits demonstrates the technological sophistication required for modern space operations. Its development and continued use reflect the ongoing need for specialized launch capabilities to support diverse mission requirements, from global positioning to national defense to environmental monitoring.

## Notable For
- Specialized variant of the Delta IV family optimized for specific payload classes and orbital requirements
- Key role in deploying U.S. military and government satellites, including GPS and reconnaissance missions
- Part of Boeing's contribution to national space launch capabilities and space infrastructure
- Configuration that balances payload capacity with launch costs for medium-lift missions
- Integration with advanced satellite systems that support critical national security and civilian applications

## Body
### Technical Classification and Variants
The Delta IV Medium+(4,2) is classified as a rocket model and represents a specific configuration within the broader Delta IV launch vehicle family. Its designation indicates particular specifications regarding payload fairing size, number of solid rocket boosters, and upper stage configuration. This variant was developed to address specific mission requirements that fell between the capabilities of smaller and larger Delta IV configurations.

### Launch History and Applications
The launch vehicle has been employed for a diverse range of missions, primarily focused on deploying U.S. government and military satellites. Its payload capacity and orbital insertion capabilities make it suitable for medium-lift missions that require precision delivery to various orbital regimes. The Delta IV Medium+(4,2) has supported the expansion and maintenance of critical space-based infrastructure, including the Global Positioning System constellation and various national security satellite programs.

### Relationship to Delta IV Family
As a subclass of the Delta IV system, the Medium+(4,2) variant shares common elements with other members of the family while offering distinct performance characteristics. The Delta IV program as a whole was developed to provide a modern, modular launch capability that could be configured for different mission requirements. The Medium+(4,2) represents one point in the spectrum of capabilities offered by this launch vehicle family, optimized for specific payload classes and mission profiles.

### Documentation and References
Information about the Delta IV Medium+(4,2) is documented in aerospace references and launch vehicle databases, with its specifications and mission history recorded in technical literature. The launch vehicle's development and operational history are referenced in discussions of U.S. space launch capabilities and the evolution of expendable launch systems for government and commercial applications.

## Schema Markup
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "Delta IV Medium+(4,2)",
  "description": "variant of the Delta IV space launch vehicle",
  "url": "https://en.wikipedia.org/wiki/Delta_IV_Medium%2B_(4,2)",
  "sameAs": [
    "https://www.wikidata.org/wiki/Q5284643"
  ],
  "additionalType": "rocket model"
}

## References

1. [Source](https://www.flightglobal.com/news/articles/boeing-introduces-new-delta-iv-variants-for-commercial-43435/)
2. [Source](http://space.skyrocket.de/doc_lau/delta-4.htm)