RD-181 engine

Orbital ATK has performed a hot-fire test on the updated first stage propulsion system of the Antares rocket with RD-181 main engines at Virginia Space’s Mid-Atlantic Regional Spaceport. NASA said Wednesday the test sought to assess the performance of the integrated first stage — including new engines, modified Stage 1 core, avionics, thrust vector control and pad fueling systems — in an operational environment. The Antares engineering […] More