Injector for mixing two propellants comprising at least one injection element with a tricoaxial structure

摘要

An injector for mixing two propellants upstream of a combustion chamber. The injector includes: at least one injection element with a tricoaxial structure installed between two plates which between them delimit a space; and coaxial ducts including an internal coaxial duct and an external coaxial duct that are supplied in parallel with a same propellant, for example via the space.

主权项

1. An injector for mixing two propellants, comprising:
several injection elements with a tricoaxial structure installed between two plates, an upstream plate and a downstream plate delimiting a space therebetween; and three coaxial ducts being defined in the injection element, including an annular middle coaxial duct for a first propellant and two coaxial ducts for a second propellant, the two coaxial ducts including an annular internal coaxial duct and external coaxial duct, respectively, wherein the internal coaxial duct and the external coaxial duct are supplied in parallel with a second propellant, wherein each injection element is rigidly fixed to the two plates, and wherein each injection element includes:
a first segment directly fixed to the upstream plate and in which the internal coaxial duct is formed,a second segment directly fixed to the first segment and defining the annular middle coaxial duct therewith, anda third segment directly fixed to the second segment and defining the annular external coaxial duct therewith.