Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019).

In jet engine design knowledge of the clearance between an airfoil blade tip and engine housing is an importantx000D
factor that can dramatically affect engine performance. This gap can change due to extreme temperaturex000D
variations and high centrifugal and torsional forces. GE Aviation has developed a sensor to monitor airfoilx000D
clearance. The sensor is mounted in the engine housing and is based on sensing the capacitance change as thex000D
blade passes over a probe. The probe is coupled to a cavity and resonator based electronics, which produces anx000D
output signal. Accurate measurement of the clearance requires modeling and calibration of the sensor. GEx000D
Aviation will be partnering with Dr. G.E. Bridges at the University of Manitoba to develop a multi-physicsx000D
model for determining the capacitance change measured by the clearance probe and use this to calibrate thex000D
sensor output signal. In Phase I a model of the probe tip-blade for different geometries and materials wasx000D
developed. In Phase II, the coupled cavity and electronics will be modeled. The model will be based onx000D
electromagnetic simulation. Experimental verification will be performed using a bench-top spin-rig system,x000D
built by GE Aviation for testing their clearance sensor. A PhD student from the University of Manitoba withx000D
expertise in computational electromagnetics will develop and verify the calibration model. In addition tox000D
providing details of the clearance sensor, GE Aviation will provide a bench-top spin-rig system and aid inx000D
obtaining measured results. GE Aviation is one of the worlds top suppliers of aircraft engines and offersx000D
engines for military and commercial aircraft. The calibration model developed in this project will provide anx000D
important component for the accurate use of GE Aviation's clearance probe, subsequently aiding in improvedx000D
design and performance of their jet engines.