Fairing-separation issue has grounded Ariane 5 since August 2020, also affected ULA’s Atlas 5

by Peter B. de Selding

PARIS — Excess vibration during fairing separation on two European Ariane 5 missions in 2020 forced a months-long inquiry that has grounded the vehicle since August, with similar consequences for the United Launch Alliance Atlas 5, which uses the same fairing technology, government and industry officials said.

With the help of a recent emergency cash infusion by the Swiss government, Ariane 5 and Atlas 5 fairing manufacturer Ruag Space, based in Switzerland, apparently has identified the root cause of the issue and begun implementing corrective measures.

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