ULA Won’t Confirm Vulcan Engine Amid Launch Race
Credit: United Launch Alliance
The head of United Launch Alliance (ULA) still won’t reveal which rocket engine will power the company’s Vulcan rocket—a choice between the kerosene-fuel Aerojet Rocketdyne AR1 or methane Blue Origin BE-4—but confirms the next-generation launch vehicle will be submitted for co-investment under the U...
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