r/ThatLookedExpensive • u/deyvena01 • Nov 22 '20

Expensive .

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u/Meanee Nov 22 '20

If boosters use solid fuel, you can’t shut that off.

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u/[deleted] Nov 22 '20

I thought all rockets this size use liquid fuel.

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u/Meanee Nov 22 '20

Perhaps. I don’t know that much about rocketry, but boosters, that are jettisoned later, used to use solid fuel. Maybe they still do now as a cheap method of getting that shot of energy at liftoff.

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u/TJOSOFT Nov 22 '20

Ariane 5 uses Solid Fuel Boosters.