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Acoustic Tone Researcher

Publicado
Pruebas New Brighton , Región Valona , Bélgica Contrato determinado / Por obra y servicio Tiempo completo Doctorado Más de 5 años
Publicado

Descripción del puesto de trabajo

Summary:
Engine testing is mandatory for various reasons, and a stable, undisturbed environment is mandatory to let the aero engine operate. However, in some particular conditions, instabilities could occur, leading to disturbance on the engine function. This could lead to unacceptable vibrations, very loud noise and failure by fatigue of different parts including engine parts. Levels as high as 160 dB can be reached at single frequencies, this is called a tone. The aim of this research is to investigate the main creation mechanisms of this tone.
Generally, tones can be explained through the complex interactions between airflow instability, acoustics and mechanical vibration. The research will be hence oriented towards the numerical and experimental prediction and correlation of tones occurring in different combinations of test cells configurations and engine types/regimes.
A first phase of the research consists of a literature survey and briefing by Safran Test Cells of several situations of tones observed. The researcher will summarize all families of tones into categories that could lead to several path of investigations in the next phases. An experimental and a numerical phase will follow this initial phase.

Essential Job Functions:
• Conduct research about the tone origin, the prediction, the mitigation actions.
• Support the development of numerical tools aimed to represent the tone phenomenon, by coupling aero unsteadiness, acoustics and vibration
• Support the development of subscale prototypes to demonstrate the phenomenon at subscale and determine the effect of the variation of the key design parameters
• Exploit the existing tone data from Safran Test Cells and define a convenient way to measure more accurately, and process the data in the future.
• Establish the best test cell design practices to mitigate all kinds or tones
• Propose a predesign tool to predict the situation with the more risk and identify the design parameters combination that need to be avoided
• Actively participate in a continuous improvement culture providing recommendations and implementing enhancements to current methods and procedures.
• Other duties as assigned.

Requisitos del puesto de trabajo

Education and Experience:
• PhD in Aerospace Engineering or related field OR should prove at least 4 years of relevant research experience

Qualifications:
• Strong technical and analytical research skills.
• Demonstrate accuracy and thoroughness; actively seeks opportunities to improve and promote quality and monitors own work to ensure quality is met.
• Self-motivated, organized, able to multi-task, prioritize and excel in a fast-paced environment while exercising initiative and judgment as well as making decisions within scope of assigned authority.
• Solid analytical and problem-solving skills including problem identification, analysis, action planning and execution.
• Demonstrate accuracy and thoroughness; actively seeks opportunities to improve and promote quality and monitors own work to ensure quality is met.
• Self-motivated, organized, able to multi-task, prioritize and excel in a fast-paced environment while exercising initiative and judgment as well as making decisions within scope of assigned authority.
• Solid analytical and problem-solving skills including problem identification, analysis, action planning and execution.
• Should have spent less than 12 months in Belgium in the past 36 month-period (citizenship or nationality is not a requirement)
• Willingness to work and live in Wallonia, Belgium, where the research project will be held

Especificidad del puesto de trabajo

• Willingness to work and live in Wallonia, Belgium, where the research project will be held

logo safran

Safran es un grupo internacional de alta tecnología que opera en los sectores de la aeronáutica (propulsión, equipos e interiores), el espacio y la defensa. Su misión: contribuir de forma duradera a un mundo más seguro, en el que el transporte aéreo sea cada vez más respetuoso del medio ambiente, cómodo y accesible. Presente en todos los continentes, el Grupo emplea a 76 800 personas, con un volumen de negocios de 15 300 millones de euros en 2021. Ya sea por su cuenta como en colaboración con otras empresas, ocupa posiciones de liderazgo en sus mercados a nivel europeo y mundial. Safran está comprometido con los programas de investigación y desarrollo que preservan las prioridades ambientales de su hoja de ruta de innovación tecnológica.

La revista Forbes clasificó a Safran como el tercer mejor empleador del mundo en su sector en el año 2021.


Safran Aero Boosters diseña, desarrolla y produce compresores de baja presión, equipos y estaciones de pruebas para la propulsión aeroespacial. La empresa equipa la mayoría de los aviones civiles en servicio, así como el cohete europeo Ariane. Con sede en Lieja (Bélgica), Safran Aero Boosters emplea a 1800 personas y cuenta con 2 filiales en Estados Unidos.

76 800
empleados en todo el mundo
27
Número de países en los que está presente Safran
35
familias de especialidades
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