Safran Aero Boosters Sa

Florian Cleyet

Bruno Servais

Stéphane Bougelet

David Weicker

Tom Henkes

Alain Beaujean

Aurore Fezas

Stephane Bougelet

An axial turbomachine includes a first separation nozzle capable of separating an incoming air flow into a radially internal air flow and a radially external air flow, called a secondary flow; a second separation nozzle capable of separating the radially internal air flow into a primary flow and a tertiary flow, the tertiary flow being in a tertiary flow vein radially external to the primary flow, delimited by an internal wall and an external wall; and an air/oil type heat exchanger, disposed in the tertiary flow vein. The heat exchanger includes several angular sectors, each angular sector including an oil inlet on the internal wall at an angular end of the sector, and an oil outlet on the internal wall at an opposite angular end of the sector.

Triple-flow axial turbomachine comprising a diverging heat exchanger in the third flow

An axial turbomachine including a first separation nozzle capable of separating an incoming air flow into a radially internal air flow and a radially external air flow, called secondary flow; a second separation nozzle capable of separating the radially internal air flow into a primary f flow and a tertiary flow, said tertiary flow being in a tertiary flow vein radially external to said flow primary; and an air/oil type heat exchanger disposed in the tertiary flow stream and including heat exchange surfaces with air and oil passages extending in said tertiary flow stream; and structural arms extending radially through the tertiary flow vein. Each structural arm has in the tertiary flow vein a cross section with a downstream portion having a width decreasing towards the downstream, the heat exchanger being adjacent to said downstream portions of the structural arms.

A heat exchanger includes a plurality of fins arranged as a network and delimiting corridors, and an envelope having an internal wall and an external wall, the internal and external walls delimiting between them a channel for a flow of a first fluid in a main direction, the network of fins being arranged in the channel and connected to the internal and external walls, at least one passage for a flow of a second fluid being embedded in at least one of the internal and external walls, the channel being, in the main direction, divergent and then convergent.

Air-oil heat exchanger

The invention relates to a method of manufacturing at least one tank with a shell, in particular a turbojet engine oil tank. The method comprises the following stages: (a) definition of different shell sections () for each tank, whereof a first shell section () has a recess () and a second shell section () a boss (); (b) production of the shell sections () by additive manufacturing in which the boss () on the second shell section is produced in the recess () in the first shell section; then (c) welding of the sections () one to the other.

Additive manufacturing method for a turbofan engine oil tank

The invention relates to a turbojet engine oil tank (). The tank () comprises a main chamber and an envelope () delimiting the main chamber, and a fixing portion () for example with fixing flanges () and a branch (). The envelope () features in particular an envelope part () relative to which the fixing portion () projects. The envelope part () and the fixing portion () are produced by layered additive fabrication so as to be in one piece. The invention also relates to a method of fabricating an oil tank ().

Turbomachine oil tank

An oil tank of a turbine engine, particularly of an aircraft turbojet includes an external wall forming a generally curved main cavity. This cavity includes an arched sensor for electrically measuring the oil level, for example in a capacitive manner. Said arched sensor matches the curvature of the main cavity in order to be integrated therein. Sensor supporting arms distributed along the curvature of the arched sensor and/or an arched sleeve with an arched cavity receive the arched sensor. A turbine engine is provided with an oil tank, as well as a method for mounting a sensor in an oil tank.

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Liege, Belgium

Florian Cleyet