
Two RD-181 integrated with the Antares first stage air frame at the Wallops Island, Virginia Horizontal Integration Facility (HIF). A “hot fire” test on Pad 0A is scheduled for late 2015 or early 2016. (Credit: NASA/ Terry Zaperach)
Orbital ATK reported today that it is making good progress on its upgraded Antares rocket, which has been grounded since a catastrophic launch accident in October 2014.