ULA doesn't have a whole lot of choice on this one... They need to stop using RD-180's from Russia, which means Atlas is going away. Delta is too expensive to pick up the slack, and is also slated to be phased out.
I'm not optimistic about the BE-4's (I suspect ULA will end up going with an Aerojet engine), and they may ditch the engine recovery aspects, but I fully expect to see _some_ sort of new launch platform by the end of this decade. They don't have a whole lot of other choices...
I'm not optimistic about the BE-4's (I suspect ULA will end up going with an Aerojet engine), and they may ditch the engine recovery aspects, but I fully expect to see _some_ sort of new launch platform by the end of this decade. They don't have a whole lot of other choices...