As part of the DTI LINK Sensors and Sensor Systems for Industrial Applications Programme (S3IA) AOS Technology Ltd have been working in conjunction with Rolls-Royce plc and the University of Strathclyde to try and solve the system integration issues associated with the use of optical fibre pressure and temperature sensors within aero engine environments.

Optical fibre sensors (OFS) have matured technically to the point where, in addition to providing weight saving, size advantages and freedom from Electromagnetic Interference (EMI), they outperform their electrical counterparts. The objectives of this research programme are essentially to address the potential and system integration issues, develop redundant optical fibre network arrays and low cost, high precision sensor demodulation systems. In addition mechanical techniques and careful material selection have been used to provide an excellent degree of sensor immunity from what is a severe (>600C and 30psi) working environment.

To date, novel optical pressure and temperature sensors (subject to two Patent applications) have been developed and tested on small 1000hp Gnome jet engines. Larger scale engine testing and system development outwith the S3IA programme is currently underway. Further programme information can be found using the DTI website link here;

 www.dti.gov.uk/sensors/programmes/projects/ossac.shtml