A unique part of this program is that Orbital is working under NASA’s Commercial Orbital Transportation Services (COTS) program. A commercial approach to space is both exciting and challenging. The success of the mission is still expected, relying heavily on proven technologies while calculated differences from a standard space program are accepted to reduce the cost of accessing space. Orbital’s vehicle is designed to bring cargo to the Space Station. During the upcoming inaugural launch test, two Aerojet AJ26 expendable rockets will be demonstrated and a simulated cargo ship will demonstrate separation from the launch vehicle in orbit.
Good luck Antares!