# ULPM H30

> upper rocket stage used by Ariane 6

**Wikidata**: [Q135784104](https://www.wikidata.org/wiki/Q135784104)  
**Source**: https://4ort.xyz/entity/ulpm-h30

## Summary
The ULPM H30 is the upper rocket stage of the Ariane 6 launch vehicle, designed to maneuver payloads into precise orbits or interplanetary trajectories. It functions as a reusable space tug, enabling flexible mission profiles for satellites and deep-space probes.

## Key Facts
- **Height**: 12 metres  
- **Diameter**: 5.4 metres  
- **Primary Engine**: Vinci (single engine configuration)  
- **Manufacturer**: ArianeGroup  
- **Country of Origin**: Germany  
- **Used By**: Ariane 6 launch system  
- **Aliases**: H30, Upper Liquid Propulsion Module  
- **Classification**: Rocket model and subclass of space tug  

## FAQs
### Q: What is the primary function of the ULPM H30?  
A: The ULPM H30 serves as the upper stage of Ariane 6, responsible for deploying payloads into target orbits or directing them toward interplanetary trajectories after initial launch.  

### Q: How does the ULPM H30 differ from traditional rocket stages?  
A: Unlike expendable upper stages, the ULPM H30 is designed as a reusable space tug, allowing it to perform multiple orbital maneuvers and adapt to diverse mission requirements.  

### Q: What propulsion system powers the ULPM H30?  
A: It utilizes a single Vinci engine, known for its restart capability and high efficiency in vacuum conditions, enabling precise orbital adjustments.  

### Q: Which organization is responsible for manufacturing the ULPM H30?  
A: ArianeGroup, a European aerospace consortium headquartered in Germany, produces the ULPM H30 for the Ariane 6 program.  

## Why It Matters
The ULPM H30 represents a critical advancement in European space transportation, enhancing the flexibility and reliability of the Ariane 6 launch system. As a reusable space tug, it reduces mission costs by enabling payload repositioning and orbit optimization without requiring dedicated propulsion systems on satellites. This capability supports diverse applications, from deploying constellations in precise orbital planes to facilitating deep-space missions. By integrating advanced restartable propulsion and modular design, the ULPM H30 positions Europe competitively in the global launch market while supporting sustainable space operations through reusability.

## Notable For
- **Reusable Space Tug Design**: Enables multiple orbital maneuvers and payload repositioning, reducing dependency on satellite-based propulsion.  
- **Vinci Engine Integration**: Utilizes a single restartable Vinci engine for high-efficiency thrust in vacuum conditions.  
- **Modular Architecture**: Functions as a standardized upper stage adaptable to various Ariane 6 configurations.  
- **German Manufacturing**: Produced by ArianeGroup, reinforcing Europe’s domestic space industrial base.  

## Body
### Overview  
The ULPM H30 (Upper Liquid Propulsion Module H30) is the upper stage of the Ariane 6 launch vehicle, classified as both a rocket model and a space tug. It is engineered to perform orbital insertion, circularization, and interplanetary trajectory injection for payloads.  

### Specifications  
- **Dimensions**: 12 metres in height and 5.4 metres in diameter.  
- **Propulsion**: Powered by one Vinci engine, featuring restart capability for multiple burns.  
- **Reusability**: Designed for extended operational flexibility, allowing payload repositioning and orbit adjustments.  

### Role in Ariane 6  
As the upper stage of Ariane 6, the ULPM H30 activates after booster separation, deploying satellites into their final orbits or initiating transplanetary trajectories. Its space tug functionality optimizes mission efficiency by centralizing propulsion and guidance tasks.  

### Manufacturer and Origin  
Developed and manufactured by ArianeGroup in Germany, the ULPM H30 aligns with Europe’s strategy to maintain autonomous access to space through advanced, domestically produced technology.

## References

1. [Source](https://ariane.group/en/space-transportation/ariane-6/)