Ariane 6 central core reaches Europe's Spaceport

(18 Jan 2022) The central core of ESA's new generation Ariane 6 launch vehicle has arrived in French Guiana from Europe. This enables combined tests at Europe's Spaceport where Ariane 6 parts will come together on the launch pad for the first time.

Ariane 6's central core comprises a lower stage and upper stage. The lower stage is from ArianeGroup's Les Mureaux site in France; the upper stage is from ArianeGroup's Bremen factory in Germany. They will be used in 'combined' tests which will verify all the interfaces and functions between the Ariane 6 launch vehicle and ground facilities at the spaceport.

From arrival to hot-firing tests on the launch pad, operational procedures will follow as closely as possible those for any Ariane 6 launch campaign.

First, the central core will be integrated horizontally inside the Ariane 6 launch vehicle assembly building then taken to the launch pad and raised vertical inside the mobile gantry. This is a major difference with respect to the current Ariane 5 launch campaign.

The mobile gantry has moveable platforms so that engineers can access the whole vehicle for integration.

Four mock-up solid rocket boosters will be strapped to the lower stage. These are the same mass and dimensions as the real boosters and enable engineers to practise the procedures and test the equipment.

The hot firing test of the Ariane 6's lower stage Vulcain 2.1 engine will follow a special set of operations on the Ariane 6 launch pad which has been adapted for use as a test bench. Ariane 6's lower stage Vulcain 2.1 engine will be ignited several times, but Ariane will not lift off during tests.

The flight software and tank filling and draining operations will be tested too. These are vital to ensure a safe launch sequence, whether it is nominal or interrupted.

While some elements of the launch pad infrastructure are unfinished, the risky and complex tests of the ground systems have been previously completed and the new Ariane 6 launch complex was inaugurated last year.

Meanwhile, a further complete Ariane 6 upper stage is being prepared for hot-fire tests at the DLR German Aerospace Center in Lampoldshausen, Germany. Tests inside a special facility will mimic the conditions of space and verify the systems which enhance the versatility of Ariane 6.

Further tests at ESA's Technical Centre in the Netherlands, ESTEC, will include separation tests of the lower and upper stage.

Reference: ESA PR

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