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Ariane 5 August 1, 2019

Launcher build-up is completed for Arianespace’s dual-payload Ariane 5 flight on August 6

Final payload integration for Arianespace’s Flight VA249 was performed in the Spaceport’s Ariane 5 Final Assembly Building.

The Ariane 5 for Arianespace’s upcoming mission from French Guiana is now fully-assembled following integration of its two satellite passengers: Intelsat 39 and EDRS-C – both of which will be delivered to geostationary transfer orbit on a flight scheduled for August 6.

Encapsulated in an ogive-shaped protective fairing, Intelsat 39 has been positioned atop its EDRS-C co-passenger – which was installed on the launcher’s cryogenic core stage during previous activity inside the Spaceport’s Final Assembly Building for Ariane 5.

These successive integration steps enable a new series of preparation milestones to begin. They include tomorrow’s launch readiness review, which will be followed by Ariane 5’s August 5 rollout to the ELA-3 launch zone.

Liftoff is scheduled during a 2-hr., 21-min. launch window that opens August 6 at 4:30 p.m. local time in French Guiana, with the two spacecraft to be deployed to orbit on a flight lasting 33 minutes.

Intelsat 39: Faster, more efficient connectivity

Built by Maxar Technologies, Intelsat 39 is 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.

Intelsat 39 will be the 61st Intelsat spacecraft launched on an Arianespace mission, continuing a partnership that extends back to 1983. The satellite will replace Intelsat 902 – lofted by Arianespace in 2011 – at an orbital position of 62 deg. East.

EDRS-C: Expanding the SpaceDataHighway

EDRS-C – based on a satellite platform supplied by OHB System – is the second node of the SpaceDataHighway, which is the world’s first “optical fiber” network in the sky based on cutting-edge laser technology. Permanently fixed over a network of ground stations, the SpaceDataHighway will help improve environmental and security monitoring, disaster response and crisis management.

To be positioned at 31 deg. East, EDRS-C 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.

The SpaceDataHighway is a public–private partnership between Airbus and the European Space Agency (ESA), with the laser terminals developed by Tesat-Spacecom and Germany’s DLR Aerospace Center. Airbus owns, operates and provides services for the SpaceDataHighway. EDRS-C will be the 132nd satellite launched by Arianespace at the service of Airbus, as well as its 52nd mission for ESA.

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:

German Aerospace Center (DLR) website:

OHB System website:

Avanti Communications website:

Ariane 5 July 29, 2019

Preparations for Arianespace’s next Ariane 5 mission enter the payload integration phase

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