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HYLAS 4 is a planned high-throughput broadband communications satellite built by Orbital (OSC) for Avanti Communication.

Orbital Sciences Corporation announced in August 2014 that Avanti Communications Group plc. has awarded the company a firm contract to build the HYLAS 4 broadband communications satellite.

HYLAS 4 is based on Orbitals new Star-3 Bus. The satellite will deliver up to 28 GHz of capacity in 66 fixed beams positioned over Africa and Europe. A portion of the HYLAS 4 capacity will provide growth for Avantiís existing markets with the remainder available for initiating service to new coverage areas. HYLAS 4 is designed with four steerable beams that also could serve markets in Latin America or Africa.

It was planned for launch by Arianespace on an Ariane-5ECA in early 2017, but has been delayed to 2018.

Nation: UK
Type / Application: Communication
Operator: Avanti Communications Group plc
Contractors: Orbital ATK
Equipment: 66 high-throughput Ka-band beams
Configuration: GEOStar-3
Propulsion: IHI BT-4, 4 × XR-5 Hall Current Thrusters
Power: 2 deployable solar arrays, batteries
Lifetime: 15 years
Mass: 4050 kg
Orbit: GEO
Satellite COSPAR Date LS Launch Vehicle Remarks
HYLAS 4 2018-033B 05.04.2018 Ko ELA-3 Ariane-5ECA with DSN 1/Superbird 8
Further HYLAS missions:

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