NASA’s new moon rocket sprang another dangerous fuel leak Saturday, forcing launch controllers to call off their second attempt to send a crew capsule into lunar orbit with test dummies.
CAPE CANAVERAL, Fla. — NASA’s new moon rocket sprang another dangerous fuel leak Saturday, forcing launch controllers to call off their second attempt this week to send a crew capsule into lunar orbit with test dummies. The inaugural flight is now off for weeks, if not months.
With a two-week launch blackout period looming in just a few days, the rocket is now grounded until late September or October. NASA will work around a high-priority SpaceX astronaut flight to the International Space Station scheduled for early October. Ground controllers tried to plug it the way they handled previous, smaller leaks: stopping and restarting the flow of super-cold liquid hydrogen in hopes of closing the gap around a seal in the supply line. They tried that twice, in fact, and also flushed helium through the line. But the leak persisted.
Hydrogen molecules are exceedingly small — the smallest in existence — and even the tiniest gap or crevice can provide a way out. NASA’s space shuttles, now retired, were plagued by hydrogen leaks. The new moon rocket uses the same type of main engines.
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