Description du projet
Un système d’injection à haut rendement accélère le déploiement commercial de la technologie de combustion par rotation
Safran Helicopter Engines a breveté une nouvelle technologie de combustion par rotation qui améliore l’allumage du mélange air/carburant et permet de réduire le poids de la chambre de combustion, sans pour autant compromettre sa durée de vie. L’évaluation des émissions d’oxydes d’azote (NOx) et de suie constitue une étape clé avant que cette technologie ne puisse être commercialisée. Le projet LOOPS, financé par l’UE, prévoit de concevoir (GDTECH), fabriquer, tester (INSA Rouen) et modéliser (CERFACS, GDTECH) un système avancé d’injection à faible teneur en NOx et en suie pour la technologie de combustion par rotation. Les travaux expérimentaux seront complétés par des simulations numériques qui fourniront, pour la première fois, une caractérisation détaillée de la concentration et de la distribution granulométrique des particules de suie.
Objectif
Safran Helicopter Engines has recently developed and patented a new spinning combustion technology (SCT). This innovative
technology improves ignition and blow-off capabilities and enables combustor weight reduction, without compromising turbine
nor combustor lifetime. To further promote this highly promising technology, the next step is to assess SCT performances in terms of NOx and soot emissions. Indeed, new aeronautical technologies entering the market today must comply with international
regulations and answer the public environmental concern about global warming and human health. To assist Safran in this
development phase, the LOOPS project aims to design, manufacture, test and model an advanced low-NOx and low soot/particles
injection system for SCT. The technology is based on the multi-point injection concept, which has already demonstrated very good
low-NOx capabilities. The challenge is to guarantee low soot emission as well, which may be detrimental to other pollutant
reduction. Two injectors will be designed and evaluated in a systematic way for both NOx and soot emission using combined
measurements and numerical simulation. On the experimental side, the most advanced experimental diagnostics will be used,
providing in particular and for the first time a complete and detailed characterization of the soot particles with their concentration and size distribution. On the numerical side, a significant contribution of LOOPS will be the assessment and application of accurate models for NOx and soot production in real helicopter engines. The confrontation of measurements and simulation results will allow to evaluate the accuracy of the numerical approach and to better understand the underlying mechanisms of pollutant emissions. In addition to a new low-emission injector systems for SCT, outputs of the project will be guiding rules, as well as an engineering numerical tool for low-emission SCT, allowing to find the best compromise between competing phenomena.
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RIA - Research and Innovation actionCoordinateur
64510 Bordes
France
L’entreprise s’est définie comme une PME (petite et moyenne entreprise) au moment de la signature de la convention de subvention.