The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 1994
Filed:
Mar. 17, 1993
Jacques A Roche, Lisses, FR;
Abstract
A fuel injector for a turbojet engine afterburner is disclosed having a fuel tube extending radially inwardly into an afterburner combustion chamber from the engine casing, the fuel injector tube defining a plurality of downstream facing fuel discharge orifices along a portion of its length in order to discharge fuel into the afterburner combustion chamber. A cooling device is associated with the fuel tube in order to direct cooling air from a bypass passage of the engine onto the fuel tube in order to cool the fuel tube, not only when the afterburner is in operation, but also when the afterburner is not in operation. The cooling device is an elongated tubular enclosure which substantially encloses the fuel tube, the elongated tubular enclosure having a significantly larger cross-sectional area than that of the fuel tube so as to define a cooling cavity between them. The elongated tubular enclosure, which is also attached to the turbojet engine casing, passes through the bypass passage and defines inlet openings to enable a portion of the air in the bypass passage to pass through the opening and into the cooling cavity so as to cool the fuel tube. A downstream portion of the elongated tubular enclosure defines a slit which is in alignment with the plurality of fuel discharge orifices of the fuel tube so as to enable the fuel to be injected into the afterburner combustion chamber.