# Intermediate eXperimental Vehicle

> atmospheric re-entry vehicle by the European Space Agency

**Wikidata**: [Q630310](https://www.wikidata.org/wiki/Q630310)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Intermediate_eXperimental_Vehicle)  
**Source**: https://4ort.xyz/entity/intermediate-experimental-vehicle

## Summary
The Intermediate eXperimental Vehicle (IXV) is an atmospheric re-entry vehicle developed by the European Space Agency (ESA) to test critical re-entry technologies for future space missions. Launched in 2015 aboard a Vega rocket, it demonstrated Europe's capability to autonomously return spacecraft from orbital velocities. The mission focused on validating thermal protection systems, guidance, and control during re-entry.

## Key Facts
- **Launch Date**: February 11, 2015
- **Operator**: European Space Agency (ESA)
- **Manufacturer**: Thales Alenia Space
- **Launch Vehicle**: Vega (retired European expendable orbital launch vehicle)
- **Landing Location**: Pacific Ocean (same day as launch)
- **Avionics**: Inertial measurement unit, GPS, flaps, reaction control system
- **CPU**: LEON processor
- **Mission Duration**: Sub-orbital flight lasting approximately 1 hour and 20 minutes
- **Energy Sources**: Battery and hydrazine

## FAQs
### Q: When was the Intermediate eXperimental Vehicle launched?
A: The IXV was launched on February 11, 2015, aboard a Vega rocket from the Ensemble de Lancement Vega in French Guiana.

### Q: What was the primary purpose of the IXV mission?
A: The mission aimed to test and validate re-entry technologies, including thermal protection, guidance, and control systems, for future European space transportation systems.

### Q: Where did the IXV land after its mission?
A: The vehicle splashed down in the Pacific Ocean on February 11, 2015, after completing its sub-orbital re-entry demonstration.

## Why It Matters
The Intermediate eXperimental Vehicle played a pivotal role in advancing Europe's autonomous space re-entry capabilities. By successfully testing thermal protection materials, navigation systems, and aerodynamic designs, the IXV mission provided critical data for developing reusable spacecraft and crewed missions. This demonstration reduced reliance on non-European technologies and supported the ESA's long-term goals for sustainable space transportation. The IXV's achievements also contributed to international collaboration in space exploration by validating innovative engineering solutions in real-world conditions.

## Notable For
- First ESA sub-orbital re-entry demonstrator to test technologies for return missions from low Earth orbit.
- Utilized the Vega launch vehicle, showcasing European end-to-end space transportation capabilities.
- Successfully validated the LEON processor and inertial measurement units in extreme re-entry environments.
- Demonstrated the use of hydrazine propulsion and battery systems for autonomous re-entry maneuvers.

## Body
### Mission Overview
- **Launch**: The IXV launched on February 11, 2015, at 09:12:33 UTC from the Ensemble de Lancement Vega (ELV) in Kourou, French Guiana.
- **Trajectory**: The vehicle reached an apogee of 261.6 km (162.1 miles) before re-entering Earth's atmosphere at hypersonic speeds (7.8 km/s).
- **Recovery**: After splashing down in the Pacific Ocean, the IXV was recovered by the ESA for post-mission analysis.

### Technical Specifications
- **Avionics**: Integrated systems included an inertial measurement unit, GPS, and reaction control thrusters for stabilization.
- **Thermal Protection**: The vehicle's shape and heat shield were designed to withstand temperatures exceeding 1,800°C during re-entry.
- **Propulsion**: Hydrazine monopropellant system provided attitude control during descent.

### Legacy and Impact
- The IXV mission informed the development of ESA's Space Rider program, aiming to create reusable orbital transportation systems.
- Data from the flight supported advancements in materials science and aerodynamics for future lunar and Mars missions.
- The mission highlighted the LEON processor's reliability in high-stress aerospace environments, promoting its use in subsequent ESA projects.

## References

1. Freebase Data Dumps. 2013