using an Atlas V rocket in the 551 configuration – tail number AV-073. This is a two-stage rocket, with a Common Core Booster (CCB) first stage, a single-engine Centaur upper stage, five Aerojet ...
The smallest configuration – the Atlas V 401 – has a four-meter (13.1-foot) fairing, no solid rocket motors and a single-engine Centaur upper stage. The 551 configuration that was used for the ...
Before we see another Vulcan flight, ULA's longtime workhorse rocket, Atlas ... upper-stage, which will allow it to carry spacecrafts to orbit at a cheaper rate. "There's an upgrade to the Centaur ...