Descrizione del progetto
Misurazione in tempo reale della deformazione della presa d’aria negli aviomotori
I complessi progetti delle presa d’aria per turboventole con un rapporto di diluizione molto elevato causano una notevole deformazione sulla parte anteriore della ventola durante il decollo dell’aeromobile. Ciò può influire negativamente sulle prestazioni del motore, sull’integrità strutturale e sul margine di sicurezza, con conseguenze potenzialmente catastrofiche per l’intero sistema di propulsione. Le attuali tecniche di collaudo e certificazione degli aviomotori sono limitate dalla bassa risoluzione spaziale e dalla loro natura invasiva. Il progetto NIFTI, finanziato dall’UE, supererà queste sfide sviluppando una tecnica non intrusiva che dovrebbe fornire dati in tempo reale con una risoluzione spaziale di almeno un ordine di grandezza superiore rispetto ai metodi attuali. I risultati teorici e sperimentali dovrebbero contribuire a sbloccare l’aerodinamica complessa dei sistemi di aspirazione strettamente accoppiati e aiutare la futura progettazione di aviomotori resistenti allo stallo.
Obiettivo
Short and slim aero-engine intake designs for very high bypass ratio configurations cause notable levels of unsteady distortions at the fan face especially under cross-wind or angle of attack operation during aircraft take-off. Such distortions can adversely affect the engine’s performance, operability, structural integrity and safety margin with potentially catastrophic consequences for the entire propulsion system.
Current practices for aero-engine testing and certification rely on a low number of intrusive pressure measurements at the fan face to characterise the distortion levels. Given the known limitations of currently used methods (low spatial resolution, intrusive nature) the existing technologies are inadequate to reduce the risk on the development and certification of future novel systems.
NIFTI aims to address this gap by demonstrating a non-intrusive technique to measure velocity fields across a plane located upstream of a large diameter fan of a high bypass ratio aero-engine which has never been achieved. This method will provide synchronous datasets across the measurement plane with at least one order of magnitude higher spatial resolution than current methods. The implementation will demonstrate a highly automated and flexible multi-camera system within a representative industrial test environment. A number of more advanced, non-intrusive measuring technologies will be assessed such as 3D PTV or Helium Filled Soap Bubbles (HFSB) to further enhance the outputs of the selected baseline solution.
The experimental activities will be supported by numerical campaigns and advanced data processing and flow analysis methods that will be used to analyse the highly unsteady nature of the flow distortions that will be measured during NIFTI’s experimental campaigns. These outcomes will ultimately unlock the complex aerodynamics of closely coupled fan-intake systems and aid the development of novel design rules for future, stall-tolerant aero-engines.
Campo scientifico
- natural scienceschemical sciencesinorganic chemistrynoble gases
- engineering and technologymechanical engineeringvehicle engineeringaerospace engineeringaircraft
- engineering and technologymechanical engineeringvehicle engineeringaerospace engineeringaeronautical engineering
- natural sciencescomputer and information sciencesdata sciencedata processing
Parole chiave
Programma(i)
Argomento(i)
Meccanismo di finanziamento
RIA - Research and Innovation actionCoordinatore
8316 PR Marknesse
Paesi Bassi