AR1 Twin Booster – Spaceflight Now

September 8, 2024

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Aerojet Rocketdyne touts AR1 engine for Atlas 5

October 1, 2014 William Harwood

Aerojet Rocketdyne is pressing ahead with development of a powerful new rocket engine that company officials believe will be an attractive alternative to the Russian-built RD-180 engine that now powers the first stage of United Launch Alliance’s workhorse Atlas 5 booster.