NASA had to call off its third attempt at a test of fueling its new moon rocket due to a liquid hydrogen leak.
NASA has been performing ongoing tests of its new Space Launch System, also known as the Mega Moon Rocket, which is intended to power an uncrewed trip to the moon later this year and, eventually, to carry humans back to the moon as well. The agency has encountered a variety of issues during the testing process, and it recently attempted a third, modified version of its wet dress rehearsal, but that was called off partway through once again.
The most recent version of the test, in which the rocket is rolled out to the launch pad and is filled with liquid propellant, was modified from previous efforts to focus on using the ground systems to fill the rocket’s core stage tanks, rather than trying to fill the upper stage as well. However, even with this modified test, there were still issues, following a fan issue in the first test and a stuck valve in the second test.
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