NASA Successfully Tests Moon Rocket Core stage engine

All core stage rocket engines on NASA Moon rocket have performed successfully in a series of recent tests, after the US space agency replaced a faulty control mechanism, the US space agency said.

Last month, a faulty controller on RS-25 engine number 4 forced NASA to delay its upcoming Artemis uncrewed Moon mission. The mission aims to mark the beginning of humanity return to the Moon.

All four engine controller performed as expected during power up as part of Artemis core stage engineering tests, NASA said in a statement RS-25 engine is manufactured by US-based Aerojet Rocketdyne

Four RS-25 engines (SLS) power the main stage of the Moon rocket. A The company performed several tests on a faulty Engine Four controller and determined the cause to be a faulty memory chip.

The device is used only during the controller start-up sequence and has no impact on controller operations beyond that point. 

Further, the mission engineers found no indication of faulty memory chips on the other three engines, and therefore there is no related constraints to the wet dress rehearsal or launch, NASA said.

After that the rocket and spacecraft will be rolled to Launch Pad 39B for the first time in March for a final wet dress test before launch, NASA said.

During this test, the launch team will fuel the rocket and run from pre-launch sequence to countdown. Following the success of the test, NASA said it would set a date for the mission launch.

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