Everyday Astronaut

@Erdayastronaut · Oct 20, 2020

Forget thrust to weight ratio! One key metric for Starship / SuperHeavy that's vital is thrust to area ratio!!! Raptor is currently at 270-ish bar & 1.66 mN for SN5/6/8. It's slightly below Merlin, but once ramped up to operational levels, it can easily match and exceed Merlin!

Elon Musk

@elonmusk

Raptor has now run for 90 secs at 300 bar chamber pressure before encountering issues. 210 mT-F sea level operating thrust seems achievable with no major changes. R-Boost variant is aiming for 300 ton thrust at 300 bar with same nozzle exit area. Will need bigger pumps.

12:21 AM · October 21, 2020 · 0 views

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