Radio Frequency Jet Engine Airfoil Clearance Sensor

射频喷气发动机翼型间隙传感器

• 批准号: 543879-2019
• 负责人: Bridges, Greg
• 金额: $ 4.72万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=691305
• 关键词: Radio; Frequency; Jet; Engine; Airfoil

Knowledge and maintenance of the clearance between the airfoil blade tips and engine housing is an essential factor in jet engine design as it can dramatically affect engine performance and reliability. Engine blade clearance can change due to extreme temperature variations and high centrifugal and torsional forces. The development of sensors to monitor clearance is very challenging as blades rotate at thousands of revolutions per minute, must endure extreme temperature gradients and are subjected to vibrational noise. In this project radio-frequency electromagnetic sensors will be developed to address this problem. Two approaches, one based on an LC-resonant circuit operating at VHF frequency, and a second based on a differentially coupled microwave interferometer will be utilized. In collaboration with our industrial partner, GE Aviation who has nearly eighty years experience designing jet engines, the project will encompass theoretical, electromagnetic simulation and experimental research. Experimental testing of sensors will be performed using a spin-rig system, built by GE Aviation for use in this project. GE Aviation is one of the world's foremost suppliers of aircraft engines. The blade clearance sensor techniques developed in this project will provide an important component for the efficient design of jet engines, subsequently aiding in improved design and performance of their jet engines, ultimately leading to improved fuel economy and reliability.

翼型叶片尖端和发动机壳体之间的间隙的知识和维护是喷气发动机设计中的一个重要因素，因为它会显著影响发动机的性能和可靠性。发动机叶片间隙可能会因极端温度变化和高离心力和扭转力而发生变化。开发用于监测间隙的传感器是非常具有挑战性的，因为叶片以每分钟数千转的速度旋转，必须承受极端的温度梯度，并且受到振动噪声的影响。在本项目中，将开发射频电磁传感器来解决这个问题。两种方法，一种基于在VHF频率下工作的LC谐振电路，第二种基于差分耦合微波干涉仪。该项目将与我们的工业合作伙伴GE Aviation合作，该公司拥有近80年的喷气发动机设计经验，该项目将包括理论，电磁模拟和实验研究。传感器的实验测试将使用GE Aviation为该项目建造的旋转钻机系统进行。GE航空是世界上最重要的飞机发动机供应商之一。本项目中开发的叶片间隙传感器技术将为喷气发动机的有效设计提供重要组成部分，随后有助于改进喷气发动机的设计和性能，最终提高燃油经济性和可靠性。