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An Experimental Study into Pylon, Wing, and Flap Installation Effects on Jet Noise Generated by Commercial Aircraft

Perrino, Michael
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406819764

Abstract Details

2014, PhD, University of Cincinnati, Engineering and Applied Science: Aerospace Engineering.
A pylon bottom bifurcation and a wing with variable flaps were designed and built to attach to a scaled model of a coaxial exhaust nozzle system. The presence of the pylon bifurcation, wing, and flaps modify the characteristics of the exhaust flow forc- ing asymmetric flow and acoustics. A parametric study was carried out for assessing and relating the flow field characteristics to the near-field pressure and far-field acous- tic spectra. The flow field was investigated experimentally using both stream-wise and cross-stream PIV techniques where the near-field pressure and far-field acoustic spectra were measured using microphone arrays. Contour mapping of the flow field characteristics (e.g. mean velocity and turbulence kinetic energy levels) and near-field acoustics with and without installation effects were used to explain the changes in the far-field acoustics.
Ephraim Gutmark, Ph.D. D.Sc. (Committee Chair)
Asif Syed, Ph.D. (Committee Member)
Jeffrey Kastner, Ph.D. (Committee Member)
Paul Orkwis, Ph.D. (Committee Member)
228 p.
Aerospace Materials
Aeroacoustics; Aircraft Engine; Pylon; Noise; Nozzle

Recommended Citations

Citations

  • Perrino, M. (2014). An Experimental Study into Pylon, Wing, and Flap Installation Effects on Jet Noise Generated by Commercial Aircraft [Doctoral dissertation, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406819764

    APA Style (7th edition)

  • Perrino, Michael. An Experimental Study into Pylon, Wing, and Flap Installation Effects on Jet Noise Generated by Commercial Aircraft. 2014. University of Cincinnati, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406819764.

    MLA Style (8th edition)

  • Perrino, Michael. "An Experimental Study into Pylon, Wing, and Flap Installation Effects on Jet Noise Generated by Commercial Aircraft." Doctoral dissertation, University of Cincinnati, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406819764

    Chicago Manual of Style (17th edition)

ucin1406819764
806
© 2014, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.