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Pregled bibliografske jedinice broj: 957507

Experimental Assessment of Aerodynamic Noise on an Airfoil Surface


Fujs, David; Bucak, Tino; Franjković, Davor
Experimental Assessment of Aerodynamic Noise on an Airfoil Surface // The 8th Congress of the Alps Adria Acoustics Association – Conference Proceedings / Horvat, Marko ; Krhen, Miljenko (ur.).
Zagreb: Hrvatsko akustičko društvo (HAD) ; Acoustical Society of Croatia (ASC), 2018. str. 178-182 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


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Naslov
Experimental Assessment of Aerodynamic Noise on an Airfoil Surface

Autori
Fujs, David ; Bucak, Tino ; Franjković, Davor

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
The 8th Congress of the Alps Adria Acoustics Association – Conference Proceedings / Horvat, Marko ; Krhen, Miljenko - Zagreb : Hrvatsko akustičko društvo (HAD) ; Acoustical Society of Croatia (ASC), 2018, 178-182

ISBN
978-953-95097-2-7

Skup
The 8th Congress of the Alps Adria Acoustics Association

Mjesto i datum
Zagreb, Hrvatska, 20-21. 09. 2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
aerodynamic noise, acoustics, piezoelectric transducers, sensors, condition amplifiers, airfoil NACA 2421, experimental measurements, FFT analysis

Sažetak
This paper describes the aerodynamic noise measurement method on an airfoil surface in laboratory conditions with non-standard equipment. The experiment and the measurements were performed in closed subsonic wind tunnel at the Aerodynamic Laboratory of Faculty of Transport and Traffic Sciences, University of Zagreb. To complete the measurement set, a charge amplifier and 3D printed airfoil model with six simple piezoelectric sensors were designed. The sensors were used for the airfoil surface noise assessment at different angles of attack and air stream velocities in the tunnel. After relayed through 6-way selector switch, the signal from each sensor under various conditions was suitably conditioned by the charge amplifier and recorded on PC for post-process data analysis. The paper gives the results of FFT analysis and offers discussion about observed correlations between absolute value of angle of attack and low frequency noise levels and spectra, especially prominent while gradually approaching critical angle of attack, the point where stalling of the airfoil occurs.

Izvorni jezik
Engleski

Znanstvena područja
Tehnologija prometa i transport, Zrakoplovstvo, raketna i svemirska tehnika, Interdisciplinarne tehničke znanosti



POVEZANOST RADA


Ustanove
Fakultet prometnih znanosti, Zagreb

Profili:

Avatar Url Tino Bucak (autor)

Avatar Url Davor Franjković (autor)

Citiraj ovu publikaciju

Fujs, David; Bucak, Tino; Franjković, Davor
Experimental Assessment of Aerodynamic Noise on an Airfoil Surface // The 8th Congress of the Alps Adria Acoustics Association – Conference Proceedings / Horvat, Marko ; Krhen, Miljenko (ur.).
Zagreb: Hrvatsko akustičko društvo (HAD) ; Acoustical Society of Croatia (ASC), 2018. str. 178-182 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
Fujs, D., Bucak, T. & Franjković, D. (2018) Experimental Assessment of Aerodynamic Noise on an Airfoil Surface. U: Horvat, M. & Krhen, M. (ur.)The 8th Congress of the Alps Adria Acoustics Association – Conference Proceedings.
@article{article, year = {2018}, pages = {178-182}, keywords = {aerodynamic noise, acoustics, piezoelectric transducers, sensors, condition amplifiers, airfoil NACA 2421, experimental measurements, FFT analysis}, isbn = {978-953-95097-2-7}, title = {Experimental Assessment of Aerodynamic Noise on an Airfoil Surface}, keyword = {aerodynamic noise, acoustics, piezoelectric transducers, sensors, condition amplifiers, airfoil NACA 2421, experimental measurements, FFT analysis}, publisher = {Hrvatsko akusti\v{c}ko dru\v{s}tvo (HAD) ; Acoustical Society of Croatia (ASC)}, publisherplace = {Zagreb, Hrvatska} }