Generally, which propellant type achieves a higher specific impulse?

Answer

Liquid propellant engines

Liquid propellant engines generally achieve a higher specific impulse than solid rockets of comparable design, which is a primary reason they are favored for maximizing Delta-V using less propellant mass.

Generally, which propellant type achieves a higher specific impulse?

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Rocket Science for Everyone with Yale's Marla Geha - YouTube

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