Tech

With further delays to BE-4 rocket engine, Vulcan may not make 2022 debut

Enlarge / A full-power test of the BE-4 rocket engine in April 2019 in West Texas. (credit: Blue Origin) Blue Origin is unlikely to deliver two flight-ready versions of the BE-4 rocket engine to United Launch Alliance (ULA) before at least the second quarter of 2022, two sources say. This increases the possibility that the […]