🛠️ Invention or technique

Raptor: first full-flow staged-combustion engine to fly

Motor Raptor: primer ciclo de flujo completo en volar

Date
25 de julio de 2019 · confidence high
Place
SpaceX Starbase, Boca Chica, Texas, United States
Credited to
SpaceX
Field
Movement

What it is

A methane and oxygen engine that burns all the fuel and oxidiser after passing them through two preburners, one fuel-rich and one oxidiser-rich. It first flew on Starhopper in 2019 and powers Starship.

The full-flow cycle had been tested on the ground before: the Soviet RD-270 (1960s, never flown) and Aerojet's IPD engine (2000-2005). The Raptor is the first to fly.

What it led to

  • fully reusable methane launchers
  • high thrust and record chamber pressure
  • methane engines of other companies (Vulcan, Zhuque-2)
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Sources✓ verified 2026-11-04