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Sensors 2016, 16(11), 1897; doi:10.3390/s16111897

Tip-Clearance Measurement in the First Stage of the Compressor of an Aircraft Engine

Department of Communications Engineering, Engineering School of Bilbao, University of the Basque Country UPV/EHU, Alda. Urquijo s/n E-48013 Bilbao, Spain
Air Force Institute of Technology (Instytut Techniczny Wojsk Lotniczych), ul. Ksiecia Boleslawa 6 01-494 Warszawa, Poland
Author to whom correspondence should be addressed.
Academic Editor: Jose Miguel López Higuera
Received: 30 September 2016 / Revised: 2 November 2016 / Accepted: 4 November 2016 / Published: 11 November 2016
(This article belongs to the Special Issue Optical Fiber Sensors 2016)
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In this article, we report the design of a reflective intensity-modulated optical fiber sensor for blade tip-clearance measurement, and the experimental results for the first stage of a compressor of an aircraft engine operating in real conditions. The tests were performed in a ground test cell, where the engine completed four cycles from idling state to takeoff and back to idling state. During these tests, the rotational speed of the compressor ranged between 7000 and 15,600 rpm. The main component of the sensor is a tetrafurcated bundle of optical fibers, with which the resulting precision of the experimental measurements was 12 µm for a measurement range from 2 to 4 mm. To get this precision the effect of temperature on the optoelectronic components of the sensor was compensated by calibrating the sensor in a climate chamber. A custom-designed MATLAB program was employed to simulate the behavior of the sensor prior to its manufacture. View Full-Text
Keywords: tip clearance; optical fiber sensor; aircraft engine; optical fiber bundle; compressor tip clearance; optical fiber sensor; aircraft engine; optical fiber bundle; compressor

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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García, I.; Przysowa, R.; Amorebieta, J.; Zubia, J. Tip-Clearance Measurement in the First Stage of the Compressor of an Aircraft Engine. Sensors 2016, 16, 1897.

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