Investigation of airfoil for an insect-sized flapping wing

Hiroto Nagai, Koji Isogai, Nobuhide Uda, Kosei Ono

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have conducted numerical study for a 3D flapping wing in hovering using computational fluid dynamics, considering airfoils of a bumblebee and a morphing airfoil by controlling a hinge angle connecting the fore- And hindwings. The aerodynamic effects of insect airfoils have been investigated in addition to the effect of the variable-cambered flapping airfoil. The corrugation of a bumblebee is little effective on aerodynamic characteristics of a flapping wing. Positive cambered airfoils are effective on the aerodynamic characteristics. However, the effect is canceled out in the up- And downstrokes. As a result, the airfoils of the bumblebee do not exceed the flat plate airfoil in time-averaged aerodynamic characteristics for a flapping cycle, if the airfoil is rigid. By controlling the hinge angle connecting the fore- And hindwings, preferable camber can be attained in both the up- And downstrokes. As a result, the hinge-controlled variable-camber airfoil shows about 14% increase in the time-averaged lift coefficient compared to the rigid flat airfoil.

Original languageEnglish
Title of host publication29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014
PublisherInternational Council of the Aeronautical Sciences
ISBN (Electronic)3932182804
Publication statusPublished - Jan 1 2014
Event29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014 - St. Petersburg, Russian Federation
Duration: Sep 7 2014Sep 12 2014

Publication series

Name29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014

Other

Other29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014
CountryRussian Federation
CitySt. Petersburg
Period9/7/149/12/14

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All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Materials Science(all)

Cite this

Nagai, H., Isogai, K., Uda, N., & Ono, K. (2014). Investigation of airfoil for an insect-sized flapping wing. In 29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014 (29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014). International Council of the Aeronautical Sciences.