FBG as air pressure sensors on generic UTM-LST half model
DOI:
https://doi.org/10.11113/mjfas.v0n0.644Keywords:
FBG strain sensor, air pressure, air-flowAbstract
This work was done to investigate the feasibility of FBGs strain sensor in detection of air pressure on aeroplane model known as Generic UTM Half-Model. The FBGs was attached on the surface of aeroplane model where its position is as near as possible to the location of static pressure sensor. Then, the sensing performance was tested inside UTM Low Speed Tunnel (UTM-LST) with the wind speed set at 30 , 40 , and 50 . The direction of wind was arranged to be in perpendicular to the sensing elements and the wing model angle was varied at 0°, 5°, 10°, 15°, and 20°. The measured pressure coefficient, Cp based on Bragg wavelength shift was compared with FKPS 30DP Pressure Measuring Module data. The results shows that the shift in Bragg wavelength found to be linearly increased when the wind speed is increased. The pressure coefficient obtained by FBG has approximate value as the pressure coefficient of pressure sensor module at low angle of attack from 0° to 12°.
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