Aerojet Rocketdyne is running out of options. The workhorse propulsion company has been pushing to get its AR1 rocket motor onto either the United Launch Alliance (ULA) Atlas 5 or in a primary position for the company’s follow-on, the developmental Vulcan. Still a key legacy supplier for ULA, Aerojet’s future is uncertain in part due to the emergence of Blue Origin, a new competitor with plenty of private funding to help speed its development work. The problem is that Blue ...


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