Safran Aircraft Engines

Snecma

Jean-Michel Boiteux

Jacky Novi Mardjono

Norman Bruno André Jodet

Olivier Renon

Maxime Didier Delabriere

Norman Bruno Andre Jodet

Jerome Henri Noel Lacaille

William Bense

Jérôme Henri Noël Lacaille

Julien Christian Pascal Griffaton

Eddy Stephane Joel Fontanel

Matthieu Fiack

Giuliana Elisa Rossi

Stéphane Orcel

Jérémy Paul Francisco Gonzalez

Eddy Stéphane Joël Fontanel

Francis Couillard

Abdelkader Benyahia

Alberto Martin Matos

Helene Orsi

Audrey Dupont

Philippe Rembry

Jerome Henri Lacaille

Eddy Stephane Fontanel

Maxime Delabriere

Julien Christian Griffaton

Hélène Orsi

Maxime DELABRIÈRE

The invention relates to acoustic management, on an aircraft turbomachine or on a nacelle, via a panel (). On a support () is reserved a recess (), recessed with respect to a surrounding general surface () for contact with moving air. The recess () is adapted to receive the panel, as another so-called surface for contact with moving air. The support () and/or the panel comprise removable connecting elements for, in the recess, mounting the panel removably with respect to the support, the panel being an acoustic panel () or a non-acoustic panel ().

Acoustic management, on a turbomachine or a nacelle

An aircraft including a wing and an aeroengine having a longitudinal main axis and including a ducted nacelle with at least one fan is disclosed. The wing includes an acoustic treatment surface on a bottom portion of its outer shell on either side of the longitudinal main axis and over a width perpendicular to the longitudinal main axis that is not greater than three times the diameter of the fan. The acoustic treatment surface includes a layer of porous material for attenuating acoustic waves coming from the fan.

Aircraft including a wing with improved acoustic treatment

A method of analysis of the state of operation of a machine including a learning step supplementing a reference database with one or more thresholds for one or more indicators calculated on the basis of signals delivered by a sensor associated with the machine, the learning step including the following operations implemented by a computer processing unit; an acquisition of signals characteristic of normal operation and of abnormal operation of the machine; of each of the signals characteristic of normal operation, formation of at least one so-called deviation signal by implementing a mathematical operation having as attributes the signal characteristic of normal operation and one of the signals characteristic of normal or abnormal operation other than the signal characteristic of the normal operation; for each of the deviation signals, calculation of an indicator; determination of an indicator threshold representative of a limit between normal operation and abnormal operation of the machine.

Method, system and computer program for learning phase of an acoustic or vibratory analysis of a machine

A turbomachine including an exhaust housing, including a plurality of arms, the space separating the arms defining openings in which there circulates a primary air flow of the turbomachine, at least one conduit, a) configured to collect a compressed air flow at one of the ends of same, b) the other end of the conduit being connected to at least one opening of the exhaust housing, so as to insert the collected air flow into the primary air flow, the collected air flow having, when inserted into the opening, a Mach number less than or equal to 0.5.

Turbomachine with collection of a compressed air flow

Growing community of inventors

Coutencon, France

Jean-Michel Boiteux