NASA is ready to make another attempt to certify its moon megarocket for spaceflight. The agency plans to do a test of its Space Launch System (SLS) rocket core stage at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, on Thursday (March 18), during a two-hour window that opens at 3 p.m. EDT (1900 GMT or 2 p.m. local time at Stennis).

Engineers will power up all the core stage systems, load more than 700,000 gallons of cryogenic — or supercold — propellant into the tanks, and fire the rocket’s four RS-25 engines at the same time to simulate the stage’s operation during launch, generating 1.6 million pounds of thrust.

This is NASA’s second attempt at doing a hot fire test of SLS, after the first test shut down unexpectedly early in January. The agency is close to getting this SLS rocket ready to fly the Artemis 1 round-the-moon uncrewed mission, but the “Green Run” series of tests have encountered several delays and technical problems in recent months.

TIMESTAMPS
0:00 Preshow
4:54 Show Starts
41:19 Terminal Count & Ignition
50:33 Engine shutdown
55:50 Replay
1:07:11 Show Ends

#NAS #SLS #olhzlive

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