Blue Origin
Blue Origin appears to have solved some development issues related to the turbopumps in its powerful BE-4 rocket engine.
United Launch Alliance chief executive Tory Bruno said Friday that the problem was “sorted out,” and that the full-scale, flight-configured BE-4 engine is now accumulating a lot of time on the test stand. Bruno made his comments about one hour into The Space Show with David Livingston.
Bruno’s company, ULA, is buying the BE-4 engine to provide thrust for the first stage of its upcoming Vulcan-Centaur rocket