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NASA Replaces Leaking Fuel Seals on Artemis I SLS Rocket Ahead of Planned September 23 Launch

NASA halted its second planned Artemis I SLS-Orion spacecraft launch earlier this month, after a leak was detected in one of the fuel lines.

NASA Replaces Leaking Fuel Seals on Artemis I SLS Rocket Ahead of Planned September 23 Launch

Photo Credit: Twitter/ @NASAArtemis

The leak forced the agency to halt its second attempt to launch its Moon rocket on September 3

Highlights
  • NASA has replaced the seals associated with the hydrogen leak
  • NASA is targeting September 23 for a new attempt
  • NASA is said to have an 120-minute launch window on September 23

NASA has completed important repairs on its Space Launch System (SLS) rocket, the US space agency recently announced. The leaking fuel seals on the SLS were replaced by engineers last week. One of the fuel lines to the SLS started leaking earlier this month forcing the space agency to halt its attempt to launch Artemis I SLS-Orion spacecraft. NASA also plans to conduct a fuelling test to verify that the replaced seal is working as intended. The American space agency has announced that it was targeting September 23 for another attempt at sending its Artemis I Moon rocket into space.

On Friday, NASA announced in a blog post that it had successfully replaced the seals associated with the hydrogen leak on its Artemis I SLS rocket. As mentioned earlier, the leak forced the agency to halt its second attempt to launch its Moon rocket on September 3.

The US space agency stated that both the 8-inch line used to fill and drain liquid hydrogen from the core stage and the 4-inch bleed line used to redirect some of the propellant during tanking operations were removed and replaced by engineers ahead of the next launch attempt.

The umbilical plates were reconnected and inspections were performed by technicians over the weekend, according to NASA, while a tanking demonstration is being prepared for as early as September 17.

NASA recently announced that it was targeting September 23 for a new attempt to put Artemis I in space. NASA is said to have an 120-minute launch window on September 23 with the landing on October 18, and a 70-minute launch window on September 27 with the landing on November 5. The teams at NASA are also internally preparing to support additional dates in case flexibility is required.

The Artemis team is also being instructed by NASA to move forward with the preparations required for testing, followed by launch. This will include preparations to ensure adequate supplies of propellants and gases used in tanking operations, along with flight operations planning for the mission.


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Further reading: NASA, Artemis 1, SLS, Space Launch System
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