Snecma

Olivier Kreder

Romain Nicolas Lunel

Daniel Georges Plona

Guillaume Sevi

Mathieu Dakowski

Alain Rene Cayre

Michel Pierre Cazalens

Michel Andre Albert Desaulty

Daniel Olivier Bainachi

Delphine Hermance Maxime Parent

Michel André Albert Desaulty

A shroud for a combustion chamber bottom designed to cover fuel injectors is provided with drillings on at least one of its sides to open up the cavity within the shroud and reduce noise that it produces and combustion instabilities. The drillings also have the effect of reducing instabilities and non-uniformity of the airflow around the shroud.

Shroud for a turbomachine combustion chamber

Combustion chamber for a turbomachine, comprising a chamber endwall equipped with fuel injection means and axisymmetric walls connecting the chamber endwall to internal and external flanges for fastening to internal and external casings, these flanges including annular portions pierced by orifices of triangular or approximately triangular shape for the flow of air for cooling downstream components.

Combustion chamber for a turbomachine

The jet engine of the invention comprises an exhaust nozzle of variable section, comprising at least one flap pivot mounted about a pin, the pin being joined to the fixed structure of the jet engine via two braces each comprising a bore for housing the pin, the flap being pivot commanded by an actuating cylinder, connected to two fasteners which each comprise a bore through which the pin passes and about which they rotate. The jet engine is characterized by the fact that the pin, the bores of the braces and bores of the fasteners are arranged so that the contacts between the pin with the bore walls of the braces and with the bore walls of the fasteners are made over convex surfaces. Therefore, when in operation, in the event of pin bending the contact surfaces follow this convex shape and are suitably distributed.

Jet engine with a variable section nozzle of which at least one flap pivots about a pin, pins for flaps

Growing community of inventors

Chailly en Biere, France

Olivier Kreder