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A comment on SpaceX is now building a Raptor engine a day, NASA says. Parent comment

Re:SpaceX is now building a Raptor engine a day, NASA says by jpgvm on Wednesday November 02, 2022 @12:07PM (#33438099)
Which is actually even more impressive as the raptor also produces a greater amount of thrust.

So not only are you getting ~90x as many engines/year you are also getting a similar amount of thrust but at half the weight, likely meaning considerably mission mass / vehicle when configured for like for like thrust.

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Re:SpaceX is now building a Raptor engine a day, NASA says by chasd00 on Wednesday November 02, 2022 @12:40PM (#33438716)
i originally edited out the "greater thrust" part of my comment because the articles says they're about the same. Maybe the article mixed things up and is applying the vacuum thrust of rs-25 to the sea level thrust of raptor?

rs-25 vacuum thrust = 512,000 lbs, sea level = 418,00 lbs

raptor2 thrust = 510,000 lbs

It's not clear if that's sea level or vacuum for raptor2 but i would assume sea level since it came from a test stand and raptor2 hasn't flown in a vacuum yet

https://en.wikipedia.org/wiki/SpaceX_Raptor https://en.wikipedia.org/wiki/RS-25

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Re:SpaceX is now building a Raptor engine a day, NASA says by jpgvm on Wednesday November 02, 2022 @02:45PM (#33440941)
Yeah vacuum raptor will have higher thrust (naturally), so it is substantially more powerful.

However that isn't the most important factor, it's that the thrust/weight ratio is so much better.

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Re:SpaceX is now building a Raptor engine a day, NASA says by SEJeff on Monday November 07, 2022 @01:20PM (#33509819)
It is the first "production" full flow staged combustion engine for a rocket.

Here is a really good overview of what sets it apart: https://everydayastronaut.com/raptor-engine/

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