Patent ID: 8919095

Claim:
An injection element, comprising: a front face surface; an inner element with a first outlet opening structured and arranged for receiving and injecting a first portion of fuel; an outer element, comprising: at least one second outlet opening structured and arranged for receiving and injecting a second portion of fuel from the injection element into a combustion space, and arranged coaxially to the first outlet opening; and third outlet openings radially beyond the at least one second outlet opening composed of bores structured and arranged for forming downstream of the injection element in a fuel-flow direction a cooling liquid film layer, wherein the bores are arranged along a ring, which is coaxial to the first outlet opening and the at least one second outlet opening, and the bores are structured and arranged to supply the cooling liquid film layer in an outwardly-directed direction relative to a longitudinal axis of the first outlet opening upon exiting the injection element, wherein at least two of the first outlet opening, the at least one second outlet opening and the third outlet openings are arranged on the front face surface, wherein the injection element is a rocket drive injection element, wherein the bores open to the combustion space, and wherein the second portion of fuel does not traverse the first outlet opening.