Snecma

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

The European Union, Represented by the European Commission

Safran Aircraft Engines

Arianegroup Sas

Daniel Cornu

Christian Coddet

Jean-Michel De Monicault

Christophe Verdy

Alain Pyre

Didier Guichard

Alban Du Tertre

Christophe Fabrice Verdy

Matthias Bruchhausen

Peter Hahner

Burkhard Fischer

Christophe Hurel

Jean-Pierre Lecornu

The invention concerns a combustion chamber () comprising a neck () downstream of the injection () of gases, and downstream of this neck a divergent section () whereof the outer face of the wall (), when in operation, is cooled by a cooling system using a cryogenic product and surrounding this outer face. This divergent section (), on the inner face () of its wall (), comprises a coating () acting as temperature compensator so that the temperature of the inner face () of the coating () is higher than the condensation temperature of the combustion gases on this inner face () under operating conditions, such that no condensation is formed on this inner face ().

Combustion chamber comprising a condensation-proof barrier on a regenerative circuit

An apparatus for carrying out high cycle fatigue tests of a specimen under high pressure, including: a pressure vessel; a load train including a first horn and a second horn between which a specimen is to be arranged, wherein the load train is arranged within an internal chamber of the pressure vessel; and a converter configured to apply ultrasonic waves into the load train by exciting the first horn to apply a dynamic stress to the specimen. A base part of the second horn is movably seated in the pressure vessel such that two separated chambers are formed within the pressure vessel with the first chamber for the specimen, wherein both chambers can be fed with gas and charged with different gas pressures in order to apply a static stress to the specimen.

Apparatus and method for carrying out in a controlled atmosphere material fatigue tests in a high cycle regime with a controlled strain ratio

A system for cooling and holding a testpiece in an effective manner while the testpiece is subjected locally to high heat flux. The testpiece includes an inside face extended by parallel strips that leave between them channels for passing a cooling fluid, and parallel fins of an intermediate part are inserted between the strips.

Device evaluating thermomechanical fatigue of a material

High heat flux regenerative circuit, in particular for the combustion chamber of a rocket engine

Method of manufacturing a high heat flux regenerative circuit, in particular for the combustion chamber of a rocket engine

Growing community of inventors

Mantes la Jolie, France

Daniel Cornu