Elon Musk Explains SpaceX's Raptor Engine!
Everyday AstronautYouTube ↗
Further reading 1
Caption notes
Musk and the interviewer trace flows among preburners, turbines and pumps in Raptor. Cross-feeding makes startup depend on the other side reaching the required condition. A drawing of two separate turbines misses that dependency.
Archived captions (transcription method unspecified) ↗Original passages · 2
you've got two turbines and two preburners.they're cross feeding one another.