It takes three days of preparations to get the rocket back into Kennedy Space Center's mammoth Vehicle Assembly Building, a 4-mile (6.4-kilometer) trip lasting several hours.
"I don't think we’re cutting it close," Whitmeyer told reporters. “We’re just taking it a step at a time.”
The 322-foot (98-meter) rocket can withstand gusts of 85 mph (137 kph) at the pad, but only 46 mph (74 kph) once it’s on the move.
This would be the third launch attempt for the Space Launch System rocket, the most powerful ever built by NASA. Fuel leaks and other technical problems scrapped the first two tries, in late August and early September.
Although hydrogen fuel seeped past newly installed seals during Wednesday's dress rehearsal, the launch team got the leakage down to acceptable levels by slowing the flow and reducing the pressure in the lines. That gave the launch team the confidence to proceed with a Tuesday launch attempt, officials said.
Managers said that the 30-year space shuttle program also saw plenty of hydrogen fuel leaks and hurricane-related rollbacks. The moon rocket's main engines are actually upgraded versions of what flew on shuttles.
Also, the Space Force has extended the certification of on-board batteries that are part of the flight safety system — at least through the beginning of October.
NASA has just two chances to launch the rocket — Tuesday and Oct. 2 — before a two-week blackout period begins. The next launch period would open Oct. 17.
Astronauts would climb aboard for the second test flight around the moon in 2024. The third mission, targeted for 2025, would see a pair of astronauts landing on the moon.
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