The two-stage launch vehicle is designed to use the under-development Miranda engine, with seven on the first stage and one on the second stage.
It is being developed in partnership with Northrop Grumman, which will use the first-stage of the MLV as the first-stage of a replacement for Antares, in the form of the Antares 330 launcher. This replacement is being pursued because the earlier Antares launcher design was dependent on Russian engines.
