# Ariane 5 ECA

> European launch vehicle

**Wikidata**: [Q16351692](https://www.wikidata.org/wiki/Q16351692)  
**Source**: https://4ort.xyz/entity/ariane-5-eca

## Summary
The Ariane 5 ECA is a European launch vehicle and a specific model within the retired Ariane 5 rocket series. Operated by Arianespace, this rocket model was designed to launch various payloads, including commercial satellites and scientific space observatories, into orbit. It is a subclass of the Ariane 5 rocket family, originating from the European Union.

## Key Facts
- **Type:** Rocket model
- **Classification:** A subclass of the Ariane 5 rocket series.
- **Operator:** Arianespace
- **Country of Origin:** European Union
- **Alias:** Ariane 5ECA
- **Components:** The vehicle is configured with two EAP P241 boosters, one EPC H173 core stage, and one ESC-A H14.4 upper stage.
- **Notable Payloads:** It has launched major scientific missions like the Herschel Space Observatory and the Planck space observatory.
- **Commercial Payloads:** The rocket has carried numerous communications satellites for international clients, including Eutelsat 21B, DirecTV-14, Sky Muster (Australia), and BSAT-4a (Japan).

## FAQs
### Q: What is the Ariane 5 ECA?
A: The Ariane 5 ECA is a European launch vehicle and a variant of the Ariane 5 rocket. It was operated by Arianespace to carry satellites and other spacecraft into orbit.

### Q: Who operates the Ariane 5 ECA?
A: The Ariane 5 ECA is operated by Arianespace.

### Q: What has the Ariane 5 ECA launched?
A: The Ariane 5 ECA has launched a wide variety of payloads, including communications satellites for companies like Eutelsat and Intelsat, military satellites such as Syracuse 4B for France, and major scientific instruments for the European Space Agency like the Herschel and Planck space observatories.

## Why It Matters
The Ariane 5 ECA was a significant vehicle in the global launch market, representing a key capability for the European Union's independent access to space. Operated by Arianespace, it served as a reliable workhorse for deploying critical infrastructure into orbit. Its importance is highlighted by its diverse manifest, which included high-value commercial telecommunications satellites, national security payloads, and landmark scientific missions.

By providing launch services to a wide range of international clients from countries like Japan, India, the United States, Brazil, and Australia, the Ariane 5 ECA solidified Europe's position as a major competitor in the commercial space industry. The successful deployment of flagship scientific observatories like Herschel and Planck, which have profoundly advanced our understanding of the universe, further underscores the vehicle's crucial role in space exploration and scientific discovery.

## Notable For
- **Scientific Missions:** Launched the Herschel Space Observatory and the Planck space observatory, two major missions for the European Space Agency (ESA).
- **International Clientele:** Served a global customer base by launching satellites for numerous countries, including Argentina (ARSAT-2), Australia (Sky Muster), Brazil (Star One D1), India (INSAT-4B), Indonesia (BRIsat), and Japan (BSAT-4a).
- **Versatile Payload Capability:** Demonstrated its versatility by launching a wide array of spacecraft, from heavy geostationary communications satellites to microsatellites (Sloshsat-FLEVO) and military payloads (Syracuse 4B).
- **Specific Configuration:** Utilized a distinct configuration as a member of the Ariane 5 family, consisting of two EAP P241 solid rocket boosters, an EPC H173 cryogenic main core stage, and an ESC-A H14.4 cryogenic upper stage.

## Body
### Overview and Classification
The Ariane 5 ECA is a European launch vehicle identified as a rocket model. It is a subclass within the broader Ariane 5 family of rockets, which is now retired. The vehicle's country of origin is the European Union, and its launch operations are managed by Arianespace. It is also known by the alias Ariane 5ECA.

### Technical Components
The Ariane 5 ECA's architecture is composed of three primary parts, assembled in a specific order:
- **Boosters (Stage 0):** Two EAP P241 solid rocket boosters.
- **Core Stage (Stage 1):** One EPC H173 cryogenic main stage.
- **Upper Stage (Stage 2):** One ESC-A H14.4 cryogenic upper stage.

### Launch Manifest Highlights
The Ariane 5 ECA has a long and varied launch history, serving commercial, government, and scientific clients worldwide.

- **Communications Satellites:** It has been a primary vehicle for deploying geostationary communications satellites. Examples include Eutelsat 21B, Eutelsat 25B/Es'hail 1, Intelsat 37e, Al Yah 3, and ARSAT-2.
- **Direct Broadcast Satellites:** The rocket has launched satellites for television services, such as DirecTV-14, DirecTV 15, and Sky Mexico 1.
- **Scientific Observatories:** It was entrusted with launching two of the European Space Agency's most important space observatories, Herschel and Planck.
- **International Government Payloads:** It has launched satellites for various national space programs, including India (INSAT-4B), Australia (Sky Muster), Japan (BSAT-4a, Horizons 3e), South Korea (Chollian), and France (Syracuse 4B).

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