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AssigneeSafran Aircraft Engines
InventorsPierre André Gabriel Malbois, Clément Jean Henri Bechet, Emmanuel Jean André Greslin, Romain Nicolas Lunel
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A diffusion cone for the rear part of a jet engine has a base and, on an opposite side, a truncated tip defining an annular trailing edge, and comprises a flame-holder ring with a cross section comprising an external branch and an internal branch which are connected to one another on the base side and such that the external branch extends around the internal branch, whereby the external and internal branches delimit between them an internal space opening on the opposite side to the base. One of the branches is made up of the annular trailing edge. The flame-holder ring comprises at least one fuel inlet designed to let fuel into the internal space. Such a flame-holder ring makes it possible to ensure and to control the propagation of the flame within the afterburner channel.
A turbojet-engine rear part, comprising an afterburner channel, an afterburner-channel housing surrounding said afterburner channel, a diffusion cone internally delimiting an inlet of said afterburner channel, wherein the diffusion cone comprises an annular wall extending from a base while converging towards a downstream side of the diffusion cone where said annular wall forms a truncated tip of the diffusion cone defining an annular trailing edge of the latter, wherein the diffusion cone comprises a flame-holder ring with a cross-section comprising an external branch and an internal branch rigidly connected to each other at an upstream side of the flame-holder ring and such that the external branch extends around the internal branch, whereby the external and internal branches delimit between them an internal space of the flame-holder ring having an opening on the downstream side of the diffusion cone, one of the external and internal branches consisting of said annular trailing edge, and the flame-holder ring including at least one fuel inlet arranged for admitting fuel into the internal space of the flame-holder ring.
A turbojet-engine rear part, comprising an afterburner channel, an afterburner-channel housing surrounding said afterburner channel, a diffusion cone internally delimiting an inlet of said afterburner channel, wherein the diffusion cone comprises an annular wall extending from a base while converging towards a downstream side of the diffusion cone where said annular wall forms a truncated tip of the diffusion cone defining an annular trailing edge of the latter, wherein the diffusion cone comprises a flame-holder ring with a cross-section comprising an external branch and an internal branch rigidly connected to each other at an upstream side of the flame-holder ring and such that the external branch extends around the internal branch, whereby the external and internal branches delimit between them an internal space of the flame-holder ring having an opening on the downstream side of the diffusion cone, one of the external and internal branches consisting of said annular trailing edge, and the flame-holder ring including at least one fuel inlet arranged for admitting fuel into the internal space of the flame-holder ring, wherein the turbojet-engine rear part comprises a fuel-injection system configured to inject fuel into the internal space of the flame-holder ring through said fuel inlet, wherein the turbojet-engine rear part further comprises an annular row of flame-holder arms having radially internal ends arranged axially facing the flame-holder ring.
Dependencies are inferred from the claim text.