United Launch Alliance (ULA) successfully completed the Preliminary Design Review (PDR) for the Vulcan Centaur launch vehicle with dual Blue Origin BE-4 engines. The PDR, a major milestone in development of the Vulcan launch vehicle, confirms that the design meets the requirements for the diverse set of missions it will support.
The ULA team will build upon this milestone to refine and test key elements of the design while executing a busy manifest of 14 launches in 2016.
