NASA plans to use the mega-rocket for trips to Mars in the 2030s.
This is the second and final test-firing of the booster designed for NASA’s Space Launch System. The debut launch from Florida’s Kennedy Space Center in 2018 won’t carry people. But a few years later, astronauts will climb aboard for a flight near the moon.
Tuesday’s test was conducted by Orbital ATK, the NASA contractor that also made the smaller shuttle boosters for NASA. This 154-foot-long booster was horizontal and pointing toward a mountain near Promontory, Utah, when it spewed out flames and smoke — 3.6 million pounds of rocket thrust.
Each SLS rocket will have two boosters along with four main engines. There ultimately will be 9 million pounds of thrust at liftoff, considerably more than the now-retired shuttle, noted former astronaut Charles Precourt, an Orbital ATK vice president.
Precourt said the team worked nonstop over the past five weeks to prepare for Tuesday’s milestone. “Really a delight,” he said.
Noted NASA human exploration chief William Gerstenmaier, “We should all enjoy this moment.”