Road to Acquisition: Preparing a MEMS Microphone Array for Measurement of Fuselage Surface Pressure Fluctuations

Road to Acquisition: Preparing a MEMS Microphone Array for Measurement of Fuselage Surface Pressure Fluctuations

Blog Article

Preparing and pre-testing weleda skin food 75ml best price experimental setups for flight tests is a lengthy but necessary task.One part of this preparation is comparing newly available measurement technology with proven setups.In our case, we wanted to compare acoustic Micro-Electro-Mechanical Systems (MEMS) to large and proven surface-mounted condenser microphones.The task started with the comparison of spectra in low-speed wind tunnel environments.After successful completion, the challenge was increased to similar comparisons in a transonic wind tunnel.

The final goal of performing in-flight measurements on the outside fuselage of a twin-engine turboprop aircraft was eventually achieved using a slim array of 45 MEMS microphones with additional large microphones installed on the same copyright to drawn on for comparison.Finally, the array arrangement of MEMS microphones allowed read more for a complex study of fuselage surface pressure fluctuations in the wavenumber domain.The study indicates that MEMS microphones are an inexpensive alternative to conventional microphones with increased potential for spatially high-resolved measurements even at challenging experimental conditions during flight tests.