The Wall Street Journal reports that Blue Origin has won a contract from United Launch Alliance to supply BE-4 engines for United Launch Alliance’s Vulcan launch vehicle. An announcement is expected today. The decision would be a defeat for Aerojet Rocketdyne, which has been developing the AR1 engine. The long-term, potentially multibillion-dollar agreement could provide a boost to Blue Origin’s eventual goal of becoming a major military launch provider itself. […]