A single Raptor engine is mounted underneath the Starship SN4 vehicle. Credit: Elon Musk/SpaceX. SpaceX's new raptor engine is a methane fueled full flow staged combustion cycle engine and its so hard to develop, no engine like this has ever flown before!Now this topic can be really intimidating so in order to bring the Raptor engine into context, we’re going to do an overview of a few common types of rocket engine cycles then compare the Raptor to a few other common rocket …

SpaceX has decided to install a different Raptor engine on its fourth full-scale Starship prototype in the buildup to the next-generation rocket’s inaugural flight test.

Re: SpaceX Raptor engine - General Thread 2 « Reply #475 on: 07/07/2019 09:49 pm » That 600hz spike looks pretty close to the 2nd harmonic of the lower frequency one, although I can't think of a reason for that in a rocket engine despite my vast expertise in the field.
A test fire of SpaceX's newest engine reached the power level necessary for the company's next round of rocket designs, CEO Elon Musk said on Twitter.