SpaceX CEO Elon Musk says they've made thousands of improvements to Starship and its launch systems in anticipation of their second launch attempt.
The 33-engined Super Heavy booster the spacecraft sits on top of uses a similar principle to early Russian rockets during the Cold War race to the moon.
The idea behind multiple engines is that if one or more of them fail, there are enough left over to continue the flight to orbit. You also lose less thrust when a smaller engine fails because it is only a small part of the total — whereas if you have only two or three main engines and one of them goes out, that's half or one third of the power gone.There are also economic reasons to go with a cluster of small engines.
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