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Ariane 5 August 5, 2019

Ariane 5 is in the launch zone for tomorrow’s heavy-lift Arianespace mission

With Intelsat 39 and EDRS-C under its payload fairing, Ariane 5 approaches the launch pad to complete today’s rollout.

Arianespace has delivered another Ariane 5 to the launch zone at Europe’s Spaceport in French Guiana, positioning this workhorse vehicle for its August 6 liftoff with two telecommunications satellites: Intelsat 39 and EDRS-C.

Riding atop a mobile launch table, Ariane 5 was transferred to the ELA-3 launch zone from the Spaceport’s Final Assembly Building – where its two passengers were integrated as part of pre-flight preparations. The launcher is delivered to Arianespace by ArianeGroup as production prime contractor.

With the rollout completed, the final countdown will begin for a Tuesday liftoff at the start of a 2-hour, 21-minute launch window opening at 4:30 p.m. local time in French Guiana.

For this 105th flight of an Ariane 5, the payload lift performance to geostationary transfer orbit is approximately 10,660 kg. – a total that factors in Intelsat 39 and EDRS-C, plus the launch vehicle’s dual-passenger dispenser system and satellite integration hardware.

Delivering connectivity with Intelsat 39

Intelsat 39 – built by Maxar for global operator Intelsat – is the mission’s upper passenger and will be released first in the flight sequence 29 minutes after liftoff.

It was designed with both wide and high-powered steerable spot beams to meet the needs of broadband networking, video and government customers across Africa, Asia, Europe, the Middle East and Indian Ocean region. The steerable spot beams provide flexibility within the payload and enable customers to rapidly and efficiently respond to shifts in geographic or application requirements.

The satellite features C-and Ku-band capabilities to provide additional scale for Intelsat’s Flex managed service and enhance mobile connectivity for aero, maritime and government users operating across these regions.

EDRS-C: enhancing the SpaceDataHighway

EDRS-C – to be deployed from Ariane 5’s lower passenger position – is the second node of the SpaceDataHighway network, a public-private partnership between Airbus and the European Space Agency. This spacecraft’s separation will occur 33 min. after liftoff, completing the August 6 mission.

Permanently fixed over a network of ground stations, the SpaceDataHighway will help improve environmental and security monitoring, disaster response and crisis management. EDRS-C – based on a satellite platform supplied by OHB System – will be able to connect low-orbiting observation satellites via laser at a distance up to 45,000 km., as well as unmanned aerial vehicles or mission aircraft.

EDRS-C also carries a hosted payload – HYLAS 3 – which was provided by Avanti Communications under a contract with ESA as a customer-furnished item to OHB.

  • A larger version of the photo above is available in the Gallery.

Launch window for Flight VA249:

Washington, D.C.  French Guiana UTC Paris
From 3:30 p.m.
to 5:51 p.m.
From 4:30 p.m.
to 6:51 p.m.
From 19:30
to 21:51
From 9:30 p.m.
to 11:51 p.m.

More details are available in the VA249 launch kit:

Ariane Flight VA249
PDF / 5 MB

ArianeGroup website:

Intelsat website:

Maxar Technologies website:

Airbus website, space activities:

The European Space Agency website:

OHB System website:

Avanti Communications website:

Ariane 5 August 2, 2019

Launch readiness review clears Ariane 5 for its August 6 liftoff with Intelsat 39 and EDRS-C

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