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Acoustic Tone Researcher

已发布
测试 New Brighton , Region of Wallonia , 比利时 固定期限合同 全职 博士文凭 5年以上
已发布

工作描述

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.

工作要求

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

工作的特殊性

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

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"赛峰集团(Safran)是一家国际高科技集团公司,业务范围涵盖航空(推进、设备和内装)、防务和航天领域。其核心宗旨是致力于构建更安全且可持续发展的世界,让航空运输更加环保、舒适和便利。赛峰集团业务遍及全球,拥有76800名员工,2021年营业额为153亿欧元。单独或是通过合作,赛峰集团在其核心市场占据全球或地区领导地位。赛峰集团在其技术创新路线图中承诺将大力开展以环境为主导的研发项目。

赛峰集团在2021年被“福布斯”杂志评为该行业的全球第三最佳雇主。

Safran Aero Boosters 设计、开发并生产用于航空及航天设备推进的各种低压压气机、设备及试验台。公司为市场上大部分的民用飞机及欧洲阿丽亚娜(Ariane)运载火箭提供装备。位于列日(Liège)(比利时),公司拥有1,800名雇员和2家美国子公司"

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27
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