Power plants – Combustion products used as motive fluid – Combustion products generator
Patent
1993-03-17
1994-03-29
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
Combustion products generator
60261, 60262, F02C 304
Patent
active
052973913
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.
REFERENCES:
patent: 2861424 (1958-11-01), Jurisich
patent: 3698186 (1972-10-01), Beande et al.
patent: 3800530 (1974-04-01), Nash
patent: 4730453 (1988-03-01), Benoist et al.
patent: 4887425 (1989-12-01), Vdoviak
patent: 4901527 (1990-02-01), Nash et al.
Bertsch Richard A.
Societe Nationale d'Etude et de Construction de Moteurs d'Aviati
Thorpe Timothy S.
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