Elon Musk @elonmusk
@Erdayastronaut 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. — PolitiTweet.org