Safran Helicopter Engines

Safran Aircraft Engines

Stéphane Lavignotte

Nicolas Roland Guy Savary

Jean-Paul Didier Autret

Thomas Sebastien Alexandre Gresy

Matthieu Jean Luc Vollebregt

Guillaume Klein

Olivier Lamaison

Guillaume Thierry Cottin

Thomas Joseph Lardellier

Christophe Lailhacar

Guillaume Carrerot

Mehdi Deliba

A method for manufacturing a flame tube for a turbomachine, the flame tube extending about an axis and comprising an annular radially internal wall and an annular radially external wall, connected to each other by an end wall or head wall, the internal wall, the external wall and the end wall defining an internal volume, at least one part of the said end wall forming a double wall comprising a first part and a second part connected to each other and spaced apart from each other so as to delimit a flow channel for a flow of cooling air opening into the said internal volume, the said flow channel comprising at least one air-inlet opening, the first and second parts of the double wall being connected by connecting zones or bridges extending into the flow channel for the cooling-air flow, the flame tube being manufactured by additive manufacturing.

Method for manufacturing a flame tube for a turbomachine

A combustion assembly for a gas turbine includes a flame tube and a fuel supply including a flow rate limiter supplying an injector. The flow rate limiter and the fuel injector are formed in one piece.

Integral flow rate limiter and fuel injector for a gas turbine combustor

A gas turbomachine combustion chamber includes bridges extending side by side to connect in one piece a radially inner wall and a radially outer wall towards a free end of the radially inner wall. The bridges, inner wall, and outer wall have an additive layer structure.

Production by additive manufacturing of complex parts

A tubular ventilation sleeve for a turbomachine distributor, in particular for an aircraft, the sleeve having a generally elongate shape along an axis (A-A) and including a perforated tubular wall around said axis, one of the axial ends of the sleeve being open and the other being closed by a bottom wall, wherein it further includes support beams when the sleeve is made by additive manufacturing, the beams extending inside the sleeve between the tubular wall and the bottom wall and having a longitudinal cross-section with a generally triangular shape, two sides of which are respectively connected to the tubular wall and the bottom wall and the last side of which is free and extends inside the sleeve, perforations in the tubular wall being provided between the support beams.

Impact-cooling tubular insert for a turbomachine distributor

Growing community of inventors

MOISSY-CRAMAYEL, France

Stéphane Lavignotte