BE-4
Blue Origin suffers BE-4 testing mishap
Blue Origin said May 14 it suffered a setback in the development of its BE-4 engine with the loss of a key hardware component in a recent test.
Bruno: Vulcan engine downselect is Blue’s to lose
United Launch Alliance is prepared to select Blue Origin’s BE-4 engine for its Vulcan launch vehicle this year if the engine passes an upcoming series of tests, the company’s chief executive said April 5.
