this post was submitted on 09 Nov 2023
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FTS explosives team on their way to Starship and Superheavy (pbs.twimg.com)
submitted 1 year ago by [email protected] to c/[email protected]
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[–] [email protected] 6 points 1 year ago (1 children)

Flight termination system, blows up the rocket if things go wrong

[–] [email protected] 1 points 1 year ago (1 children)

I figured they'd use methane and oxygen but guess total redundancy is better

[–] [email protected] 4 points 1 year ago

The rocket is very careful to keep the oxygen and methane separate. To make the tanks explode they'd need to spend a lot of time mixing them, which isn't good enough for a self-destruct. It would also behave differently in different parts of the flight. The equipment to do it would be big and heavy as well.

Instead, they use explosive charges because they're lightweight, reliable, and quick to detonate (last launch notwithstanding, because of a design problem)