Unverified50% confidenceFactExact time

The theoretical upper limit of specific impulse for liquid hydrogen-liquid oxygen chemical rockets is about 450 seconds.

1

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50%

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Long-term

Relevance

10/21/2026

First Seen

Sources

Nuclear-Powered Spaceship: How NASA's SR-1 Freedom Will Rewrite the Rules of Deep Space Exploration

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液氢液氧concept Specific Impulseconcept

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