http://www.nasaspaceflight.com/2014/...a-iv-h-rocket/
The Exploration Flight Test -1 (EFT-1) Orion has taken her final journey on terra firma, following rollout to the Delta IV-Heavy that is tasked with lofting her on a key test flight next month. The first flight worthy Orion will be mated with the United Launch Alliance (ULA) rocket later this week, ahead of the final readiness reviews to approve the mission.
The EFT-1 Orion was born out of many models of similar appearance, ranging from Ground Test Articles (GTAs) to small scale simulators, all with the purpose of providing the data and know-how that will allow EFT-1 to fly and fly well.
While EFT-1 is a test mission, with no crew on board, this will be a one-off flight that will have to be successful if Exploration Mission -1 (EM-1) is not to be delayed further than the current target of September 20, 2018.
A lot is riding on this first Orion to fly in space, ranging from the Critical Design Review (CDR) next year, through to political support for a program that has yet to provide a “realistic” roadmap towards the ultimate goal of sending humans to Mars.
EFT-1’s journey from the first welds at the Michoud Assembly Facility (MAF) in New Orleans through to Wednesday’s 22 mile trip to the launch pad has been three years in the making. The mission will last just a few hours.
This first flight, scheduled to launch on the morning of December 4, will see EFT-1 Orion being launched on the ULA Delta IV-H rocket, lofted to 3,600 miles beyond Earth, before returning at a velocity of approximately 20,000 mph for a splashdown in the Pacific Ocean.
The mission will be the first and last time an Orion will be carried uphill by the Delta IV-H. Orion’s future is exclusively dedicated to the Space Launch System (SLS) from Pad 39B at the Kennedy Space Center (KSC).