Aviation fuel gauging sensor utilizing multiple diaphragm sensors incorporating polymer optical fiber Bragg gratings

C.A.F. Marques, A. Pospori, D. Sáez-Rodríguez, K. Nielsen, O. Bang, D.J. Webb

Research output: Contribution to journalArticle

Abstract

A high-performance fuel gauging sensor is described that uses five diaphragm-based pressure sensors, which are monitored using a linear array of polymer optical fiber Bragg gratings. The sensors were initially characterized using water, revealing a sensitivity of 98 pm/cm for four of the sensors and 86 pm/cm for the fifth. The discrepancy in the sensitivity of the fifth sensor has been explained as being a result of the annealing of the other four sensors. Initial testing in JET A-1 aviation fuel revealed the unsuitability of silicone rubber diaphragms for prolonged usage in fuel. A second set of sensors manufactured with a polyurethane-based diaphragm showed no measurable deterioration over a three month period immersed in fuel. These sensors exhibited a sensitivity of 39 pm/cm, which is less than the silicone rubber devices due to the stiffer nature of the polyurethane material used.

Original languageEnglish
Pages (from-to)6122-6129
Number of pages8
JournalIEEE Sensors Journal
Volume16
Issue number15
Early online date7 Jun 2016
DOIs
Publication statusPublished - 1 Aug 2016

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Keywords

  • aircraft applications
  • fiber Bragg gratings
  • fuel level monitoring
  • polymer optical fiber sensors
  • pressure sensors

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