ONERA'scientists have developed a synthetic turbulence generator to simulate the development of aircraftengine jets with greater accuracy... Recent joint numerical and experimental studies carried out at Onera on aircraftengines highlighted the strong effect of the turbulence from the engine on jet development
ONERA and the SME ANDHEO have received an award for the design and implementation of an aerothermal simulation method for the hot parts of aircraftengines... This work was carried out at the request of Safran AircraftEngines and was funded by the French Civil Aviation Authority (DGAC, Direction Générale de l' Aviation Civile)
The Tosca][ 1 program of the Astech 2 center, completed in late 2012, has led to major advances in the development of a new Snecma burner architecture; a technology that must replace conventional burners to comply with future emission standards for aircraftengines. It was a case of improving the operability of a TAPS (Twin Annular Pre Swirl) type chamber injection system developed by Snecma, designed to reduce cruising flight NOx emissions by 50 to 60 %. Research engineers at ONERA had a double challenge: on one hand, combustion stability and quality when idling and, on other hand, reigniting the engine at high altitude
Ye Bonne Koyama, Safran AircraftEngines PhD student in ONERA. receives the ODAS Award 2017 in the presence of Horst Hüners (DLR) and Francis Dupoirieux (ONERA
Compressor wheel rotation is possible in aircraftengines because there is a clearance between the vanes and the casing. However, this functional clearance is the source of vortices that hinder engine performance
Modeling what happens in the combustion chamber as accurately as possible is very important in the design of more environmentally friendly aircraftengines... Annular combustion chamber of an aircraftengine
Modeling of material microstructures allows the simulation of their mechanical behavior in operation, and so the optimization and greater reliability in the design of parts, for more reliable and efficient aircraftengines... The optimization of the superalloy used for the disk of the Rafale aircraft's Snecma M88 engine involves microstructure modeling (visible in the background
The illustrations above are a representation of the micro-metric dimension of composite materials used, for example, in an aircraftengine. These materials, with remarkable thermo-mechanical properties, are made up of elastic components- long fibers or particle inclusions- set in a metal matrix
To improve the performance of aircraft and helicopter engines, the temperature needs to be increased... "We are looking at small aircraftengines, and also cogeneration turbines, which produce both heat and electricity", continued Michel Parlier