It was a case of improving the operability of a TAPS (Twin Annular Pre Swirl) type chamber injectionsystem 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
This assembly, composed of an ignition module and three injectionsystems, is equipped with wide optical access points. It also allows Onera to study in detail the mechanisms of flame propagation and so contribute to the completion and validation of the numerical tools of the Cedre code
Simulation of the injectionsystem will also require new models and more computing resources. Once the models are verified they are made available to other Onera teams, or industrial partners such as Snecma and Turbomeca
