Societe Nationale D'etude Et De Construction De Moteurs D'aviation

501 Societe Nationale D'etude Et De Construction De Meteur

Rodolphe Martinez

Michel A Desaulty

Gerard Y Barbier

Gerard J Bayle-Laboure

Jerome Perigne

Didier H Hernandez

Denis R Ansart

Gerard M Mandet

Patrice A Commaret

Pierre A Bouillot

Jean-Claude Laugeois

Gerald J Leboure

Michael A Desaulty

An arrangement for removably fixing a thermal protection tile on the inside of a combustion chamber wall is described. In one form the tile is provided with a fixing stud which is arranged to pass through a hole in the wall, and a split washer is inserted under the head of the stud to lock the assembly to the wall. In another form the tile is provided with a fixing stud having a head which is arranged to be inserted in a socket welded to the inner surface of the wall and which is locked in place by a stop inserted through a hole in the wall to abut the edge of the head and prevent its removal from the socket.

Fixing arrangement for a thermal protection tile in a combustion chamber

The combustion chamber according to the present invention utilizes a double-walled structure only in the converging portion of the combustion chamber. A hot wall is retained adjacent to, but spaced from a corresponding cold wall so as to provide a cooling space between them. An upstream portion of the hot wall is retained in a notch defined by the cold wall, while the downstream portions each have generally radially extending flanges. Studs pass through openings in the adjacent flanges to prevent any relative circumferential movement, while a clamp serves to attach the flanges to the inlet of a turbine. The clamp slidably retains the flanges therein so as to permit relative radial movement to accommodate any thermal expansion and contraction of the combustion chamber, solely by the appended claims.

Turbojet engine combustion chamber with a double wall converging zone

A control mechanism for injector diaphragms in a turbojet engine is disclosed wherein an annular fairing is utilized to synchronize the movement of the individual air-fuel injector diaphragms. The fairing member is interconnected to each of the diaphragms and a single control element controls the rotational movement of the annular fairing. This minimizes the turbulence of the air flow passing around the control system.

Control mechanism for injector diaphragms

An improved swirler system for a turbojet engine combustion chamber is disclosed in which stationary first vanes and moveable second vanes are oriented at different angles with respect to a radius of the fuel injector system. The different angles allow the angle of the incoming air to be adjusted between full power and idle conditions so as to vary the conial shape of the atomized air-fuel mixture according to the operating conditions of the engine. Radial and axial inlet duct portions serve to attenuate the wakes of the air flow generated by the vanes prior to the air passing into the combustion chamber.

Air-fuel injection system for a turbojet engine

A swirler for a gas turbine fuel injection apparatus is disclosed in which the intake air is directed both axially and radially to maximize the efficiency of the gas turbine during all modes of operation. Circumferentially alternating axial and radial passages are defined by the swirler member surrounding the fuel injection nozzle. A diaphragm control is provided to selectively control the amount of air passing through the axial and radial passages, depending upon the operational mode of the gas turbine.

Axial-centripetal swirler injection apparatus

A system is disclosed for controlling the flow of air through the air-fuel mixing device for a turbojet engine. The system simultaneously controls the amount of air passing through turbulence generating baffles and that passing into the combustion chamber depending upon the operating conditions of the turbojet engine.

Variable flow air-fuel mixing device for a turbojet engine

A fuel and air injection system for a turbojet engine is disclosed wherein a bowl-shaped member surrounding the fuel injection nozzle defines an impact cooling chamber divided into four sectors. A pair of diametrically opposite sectors have openings to permit air to pass through the cooling chamber into the combustion chamber, while opposite diametrically opposed sectors have openings of larger diameter which also allow communication between the cooling chamber and the combustion chamber. A diaphragm control system allows the air passing into the sectors having the larger diameter openings to be modulated depending upon the throttle setting of the turbojet engine.

Growing community of inventors

Perigny s/Yerres, France

Rodolphe Martinez