SLS engine prepared for the test stand

Credit: Aerojet Rocketdyne

Formerly known as the Space Shuttle Main Engine, the RS-25 accumulated more than one million seconds – or almost 280 hours – of hot fire experience during 135 missions and numerous engine tests like the one pictured here. Four RS-25 engines will power the core stage of NASA’s Space Launch System (SLS) and the engine will go back in the stand for testing this summer at NASA’s Stennis Space Center.

Credit: Aerojet Rocketdyne

This article appeared in the 7th issue of RocketSTEM magazine.

Download PDF    Issuu Reader    Buy Print Edition

Previous ‘Smoke and fire’ rise over Utah Salt Flats as student rockets soar
Next Land ho! Expedition 39 returns to Earth