Peter Beck
@Peter_J_Beck · 15 juin 2020
Also somewhat dependent on injector strategy and mixing efficiency. L* ( characteristic chamber length) determines residence time and you only want this as long as it needs to be to react the propellants.
Elon Musk
@elonmusk
Yeah. Merlin, using a single pintle injector with cold, liquid propellant, needs a longer chamber than Raptor, which uses a large number of coaxial injectors, despite Merlin being less than half thrust. Propellant enters Raptor chamber as hot gas that’s already mixed.
21:56 · 15 juin 2020 · 0 vues
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