2.2 - Coupling of MEMS gyroscope application with wavelet analysis for detection of airframe oscillations in flight conditions
- etc2016 - 36. European Telemetry and Test Conference
2016-05-10 - 2016-05-12
- 2. Sensors & AIM2016
- J. Bakunowicz, P. Rzucidlo - Rzeszow University of Technology (Poland)
- 59 - 68
The gyroscopes established one of the fundamental reference for attitude and heading in aerospace applications. The information about angular velocity gives input not only for autopilot, but also damping devices, as yaw or pitch dampers for example. The MEMS gyroscopes (Micro Electro Mechanical Systems) are much less reliable than their laser or fibre optic cousins. Nevertheless, availability and low price of MEMS components cause growing area of application in avionics for General Aviation aeroplanes. This paper presents certain results of flight data analysis registered during flight testing campaign of the new class aeroplane experimental low power single engine turbo-prop utility I-31T. The researches were focused on identification of oscillation modes, distinctive for the new aircraft, such as engine precession, whirl or shimmy. The data came from three-axis MEMS gyroscope recorder, placed near to the aircraft centre of gravity. Wavelet transformation gives better precision in time domain than Fourier transformation, especially for signals of low frequency.