Building a new booster rocket is always a long and complex process, and the difficulty of a rocket carrying astronauts doubles. In essence, liquid-fueled rockets are very complex, and they need to deal with a large number of propellants to generate tremendous power.
The plume exhaust of the core stage (Core Stage) and solid propeller (SRB) will generate 8.8 million pounds of thrust. In the first eight minutes, the four main RS-25 engines consume 733,000 gallons (2.7 million liters) of liquid oxygen and hydrogen, which are then transferred to the second stage.
It is known that the preliminary test will be carried out on the B-2 test bed at Stannis Space Center near St. Louis Bay, Mississippi. The core stage will be installed on a static flame and will not leave.
SLS's first mission, originally known as "Exploration Mission" (EM) 1, has been renamed "Artemis" 1 after NASA decided recently to name the entire lunar exploration program "Artemis". Other components involved in this unmanned mission are also in place, especially the Orion spacecraft. The spacecraft will be sent into Earth-Moon space during this flight.
The crew module and the European-built service module are currently undergoing post-test at the Kennedy Space Center, which will be assembled in the summer and then shipped to Meixi Station, Ohio, for environmental testing in August or September. The spacecraft will then be returned to Kennedy Space Center by the end of the year. Hill said Orion was "about 50 days behind schedule" and was trying to get back a little.