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Impact of insects onto aluminum and glass substrates.

ORAL

Abstract

Insects impacting cars, trains, wind turbines, or planes create a residue at the surface of these structures. This residue can alter the operation of safety sensors for vehicles, reduce the visibility of motorcycle and car drivers, increase planes’ and wind turbines' skin drag, and reduce the efficiency of Laminar Flow Control aircraft’s airfoils.

To date, the impact phenomena of insects on surfaces are not fully addressed. Indeed, impact onto airfoils and flat aluminum substrates at different impact angles (10° to 90°) and velocities (20-100 m/s) were investigated. Furthermore, a complete comprehension of the impact mechanism is lacking.

Impact experiments with Drosophila Hydei onto aluminum and glass, flat and curved substrates, were conducted on a rotating structure setup.

We present our findings regarding the residue area and pattern as a function of impact angles and velocities. Detailed residue formation from impact to dried spatter will be presented as well.

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Publication: M. Kok, J. G. Smith Jr, C. J. Wohl, E. J. Siochi, and T. M. Young, "Critical considerations in the mitigation of insect residue contamination on aircraft surfaces–A review," Progress in Aerospace Sciences, vol. 75, pp. 1–14, 2015.<br>-W. S. Coleman, "Roughness due to insects," Boundary Layer and Flow Control, pp. 682747, Jan. 1961, doi: 10.1016/B978-1-4832-1323-1.50006-3 82 <br> K. G. H. Krishnan, A. Milionis, M. Starr, and E. Loth, "Fruit fly impact outcomes and residue components on an aerodynamic surface," in 53rd AIAA Aerospace Sciences Meeting, 2015, p. 1279. <br> K. G. H. Krishnan et al., "Characterization of insect residue on an aerodynamic leading edge," in 8th AIAA Atmospheric and Space Environments Conference, 2016, p. 3445. <br>K. G. Krishnan, A. Milionis, F. Tetteh, and E. Loth, "Fruit fly impact on an aerodynamic surface: Types of outcomes and residue components," Aerosp Sci Technol, vol. 69, pp. 181–192, 2017. <br>T. M. Lorenzi, C. J. Wohl, R. K. Penner, J. G. Smith, and E. J. Siochi, "Insect residue contamination on wing leading edge surfaces: a materials investigation for mitigation," in 242nd American Chemical Society National Meeting and Exposition, 2011, no. NF1676L12548. <br> M. Kok, T. Mertens, D. Raps, and T. M. Young, "Influence of surface characteristics on insect residue adhesion to aircraft leading edge surfaces," Prog Org Coat, vol. 76, no. 11, pp. 1567–1575, 2013. <br> M. Kok, E. F. Tobin, P. Zikmund, D. Raps, and T. M. Young, "Laboratory testing of insect contamination with application to laminar flow technologies, Part I: Variables affecting insect impact dynamics," Aerosp Sci Technol, vol. 39, pp. 605–613, 2014. <br>K. G. Krishnan, A. Milionis, E. Loth, T. E. Farrell, J. D. Crouch, and D. H. Berry, "Influence of hydrophobic and superhydrophobic surfaces on reducing aerodynamic insect residues," Appl Surf Sci, vol. 392, pp. 723–731, 2017 83 <br> J. G. Smith, R. Robison, and E. Loth, "An overview of insect residue accretion and mitigation strategies on aerodynamic surfaces," Contamination Mitigating Polymeric Coatings for Extreme Environments, pp. 217–233, 2018.

Presenters

  • Pierre Lesbats

    York University

Authors

  • Pierre Lesbats

    York University

  • Alidad Amirfazli

    York Univ