As part of the J–2X engine test program for Ares V Earth Departure Stage (EDS) application, Glenn’s Plum Brook Station B–2 facility will be modified to perform thermal/vacuum ignition testing.  Engine start and restart in conditions equivalent to the Earth Departure Stage environment will be verified in the test.

Plum Brook’s unique capability to hot fire test an engine at simulated altitude temperatures and pressures will help validate the J–2X engine’s ability to perform in space.  The B-2, Spacecraft Propulsion Test Facility was constructed originally to conduct engine and stage testing.  It was previously utilized for thermal / vacuum testing of the Centaur RL-10 engine, Centaur Upper Stage and the Delta 3 Upper Stage (shown).

Delta 3 Upper Stage Engine in the B-2 Facility