NASA is preparing for a historic return to the moon in 2024. Engineers plan to conduct a key test of the space launch system (SLS) core stage rocket, which will help send astronauts to the moon. Engineers will load the cryogenic propellant into the core stage and expose the fuel tank and internal piping to the propellant extreme conditions several hundred degrees below zero. < / P > < p > the fuel loading test is very important and is the necessary prelude to the rocket test launch, which may be conducted as soon as November. In the above picture, the core of the rocket is covered by orange insulation foam. It is currently being placed on the B-2 test bed at NASA’s Stannis Space Center. < / P > < p > the rocket has been there since January since it was shipped from NASA’s Michoud Assembly Facility in New Orleans. During the new crown pandemic, rocket work was suspended several times. Workers are also facing severe weather from several hurricanes. < / P > < p > due to the impact of Hurricane Delta, workers were forced to stop working. Rocket operations are expected to resume quickly, and the storm in Stannis is expected to have little impact. The fuel test will load 733000 gallons of extremely cold liquid hydrogen and liquid oxygen in the core stage. This step is expected to take place later this month, during which the sensor will measure the reaction of the stage and internal piping to the cryogenic propellant. < / P > < p > if all goes well, the rocket will be reloaded in November, and the rs-25 main engine will run for more than 8 minutes, which is the actual combustion time at launch. The SLS core stage has the same diameter as the space shuttle fuel tank and has an empty weight of 188000 pounds. When fully charged, it will weigh about 2.3 million pounds. Chinese version of K-car: reading a10e design drawing exposure

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