NASA Successfully Static Tests It's New RS-25 Engine

January 9, 2015 NASA successfully completed a static test when it started and ran it's new RS-25
engine.


From the NASA Article HERE

The former Shuttle main engine, fired up for 500 seconds on the A-1 test stand at Stennis, providing NASA engineers critical data on the engine controller unit and inlet pressure conditions. This is the first hot fire of an RS-25 engine since the end of space shuttle main engine testing in 2009. Four RS-25 engines will power SLS on future missions.

This is the first hot fire of an RS-25 engine since the end of space shuttle main engine testing in 2009. Four RS-25 engines will power SLS on future missions.

The RS-25 was formerly the space shuttle main engine.

NASA has made modifications to the RS-25 to meet SLS specifications.  Changes that have necessitated the RS-25 rebuild:

• The engines will encounter colder liquid oxygen temperatures than shuttle; greater inlet pressure due to the taller core stage liquid oxygen tank and higher vehicle acceleration; and more nozzle heating due to the four-engine configuration and their position in-plane with the SLS booster exhaust nozzles.

Below is a video of the test stand firing.