Final Work Continues To Ready NASA’s Artemis I Moon Rocket for Launch Next Month

Space Launch System (SLS) Rocket Liftoff

This artist’s rendering shows an aerial view of the liftoff of NASA’s Space Launch System (SLS) rocket. This Block 1 crew configuration of the rocket will send the first three Artemis missions to the Moon. Credit: NASA/MSFC

Teams are moving closer to finishing operations for the Space Launch System (SLS) rocket and Orion spacecraft in the Vehicle Assembly Building at the agency’s Kennedy Space Center in Florida. This comes with just one month left until NASA’s first launch attempt for the Artemis I mission.

NASA is currently targeting launch for no earlier than Monday, August 29, at 8:33 a.m. EDT (5:33 a.m. PDT) during a 2-hour window. A successful launch on August 29 would result in a mission duration of about 42 days, returning Monday, October 10.  Engineers continue to progress through first-time operations and are prepared to learn and adapt along the way. If more than one launch attempt is needed, teams have planned accordingly with additional launch opportunities on September 2 and September 5.

Engineers successfully reconnected the hydrogen tail service mast umbilical where a hydrogen leak was detected during the last wet dress rehearsal test. The connection has been tested and no leaks were detected under ambient conditions in the Vehicle Assembly Building. Up next, technicians will perform additional tasks to return the section to its launch configuration.

Technicians have finished installing the rocket’s flight batteries. As part of operations to prepare the flight termination system, engineers installed and tested the core stage flight command receiver decoders and also tested the solid rocket boosters’ automatic destruct units. Work continues to complete the installation of the thermal protection system blankets on the interim cryogenic propulsion stage and launch vehicle stage adapter. Following completion of the upper stage closeout work, teams will conduct flight closeout inspections. This includes removing access platforms and installing flight doors to replace the ground support equipment coverings on the core stage.

Teams also are replacing the inflatable seal between the mobile launcher’s crew access arm and Orion’s launch abort system after it experienced some minor damage due to inclement weather sustained while it was out at Kennedy’s launch pad 39B for the wet dress rehearsal tests. The seal prevents anything from the outside environment from getting inside the capsule. Once the seal is replaced and tested, engineers will finish installing the remaining payloads inside the crew module before SLS and Orion roll back out to the pad for launch.


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