Coaxial injector with two combustion zones for kerosene and oxidant for rocket motor has axial entrance for kerosene and bores leading to first chamber leading to oxidant injection zones

摘要

The injector has a cylindrical outer surface and an axial entrance (11) for kerosene (Kerosin) at is upper end. The kerosene flows through a first set of bores (15) into a first chamber (1). Oxidant (GOX) flows through an entrance (12) in the side of the injector into a ring-shaped passage (3) leading to a first ring of openings (4) surrounding a big injection opening (2) for the kerosene. Kerosene and oxidant mix and partially burn in a first combustion zone (5). More oxidant is injected through a larger ring of nozzles (7) downstream of the first combustion zone, and combustion is completed in a second, larger combustion zone (6).