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Nathan Tuggy
Nathan Tuggy
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The big deal with SpaceX's engines is not the Isp$I_{SP}$. It's the =Thrust/Mass=Thrust/Mass ratio SpaceX is getting that is truly significant.
T/M is arguably more important for getting payloads to LEO than Isp is;$I_{SP}$ is, and SpaceX is setting new records for T/M in their designs.

Merlin 1D has a T/M of ~200$\approx200$. Raptor is likely to have a T/M of ~400$\approx400$. Nothing else has ever come close to attaining T/M values like these.

The big deal with SpaceX's engines is not the Isp. It's the =Thrust/Mass= ratio SpaceX is getting that is truly significant.
T/M is arguably more important for getting payloads to LEO than Isp is; and SpaceX is setting new records for T/M in their designs.

Merlin 1D has a T/M of ~200. Raptor is likely to have a T/M of ~400. Nothing else has ever come close to attaining T/M values like these.

The big deal with SpaceX's engines is not the $I_{SP}$. It's the Thrust/Mass ratio SpaceX is getting that is truly significant.
T/M is arguably more important for getting payloads to LEO than $I_{SP}$ is, and SpaceX is setting new records for T/M in their designs.

Merlin 1D has a T/M $\approx200$. Raptor is likely to have a T/M $\approx400$. Nothing else has ever come close to attaining T/M values like these.

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Ron
Ron
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The big deal with SpaceX's engines is not the Isp. It's the =Thrust/Mass= ratio SpaceX is getting that is truly significant.
T/M is arguably more important for getting payloads to LEO than Isp is; and SpaceX is setting new records for T/M in their designs.

Merlin 1D has a T/M of ~200. Raptor is likely to have a T/M of ~400. Nothing else has ever come close to attaining T/M values like these.