Orbital ATK Conducts Test of Antares First Stage (with video)
"Orbital ATK today announced it conducted a full-power "hot fire" test of the upgraded first stage propulsion system of its Antares medium-class rocket using new RD-181 main engines. The 30-second test took place at 5:30 p.m. (EDT) on May 31, 2016 at Virginia Space's Mid-Atlantic Regional Spaceport (MARS) Pad 0A. Initial indications are that the test was fully successful. The Antares engineering team will review test data over the next several days to confirm that all test parameters were met. Assuming the success of the test is confirmed, it will clear the way for the resumption of Orbital ATK's cargo logistics missions to the International Space Station (ISS) from Wallops Island, Virginia, currently scheduled for July."