Characterization of the nonlinear aeroelastic behavior of an airfoil with freeplay and aerodynamic nonlinearity

Michael Candon, Robert Carrese, Hideaki Ogawa, Pier Marzocca

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

Abstract

Higher-order spectra (HOS) are utilized to investigate the nonlinear flutter behavior of a two-dimensional pitch/plunge airfoil system in transonic flow with freeplay and aerodynamic nonlinearity. It is shown that on the route to diverging flutter the system begins with the pitching and plunging modes being uncoupled and undergoes various evolutions exhibiting quasi-periodic behavior as it moves towards an ordered state of high-amplitude periodic limit cycle behavior. New physical insights come from the bispectral densities being computed at critical stages as the system evolves from through different stages of periodicity with the coalescence of the pitching and plunging frequencies into a single coupled limit cycle. Based on these estimates the nonlinear interaction mechanisms which occur within the nonlinear aeroelastic system prior to diverging flutter can be characterized. Furthermore, aerodynamic nonlinearity in the form of Tijdeman Type-B shock motion is quantified and its effect in combination with freeplay assessed.

Original languageEnglish
Title of host publication30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016
PublisherInternational Council of the Aeronautical Sciences
ISBN (Electronic)9783932182853
Publication statusPublished - Jan 1 2016
Externally publishedYes
Event30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016 - Daejeon, Korea, Republic of
Duration: Sep 25 2016Sep 30 2016

Publication series

Name30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016

Other

Other30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016
CountryKorea, Republic of
CityDaejeon
Period9/25/169/30/16

Fingerprint

Flutter (aerodynamics)
Airfoils
Aerodynamics
Transonic flow
Coalescence
Nonlinear systems

All Science Journal Classification (ASJC) codes

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

Cite this

Candon, M., Carrese, R., Ogawa, H., & Marzocca, P. (2016). Characterization of the nonlinear aeroelastic behavior of an airfoil with freeplay and aerodynamic nonlinearity. In 30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016 (30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016). International Council of the Aeronautical Sciences.

Characterization of the nonlinear aeroelastic behavior of an airfoil with freeplay and aerodynamic nonlinearity. / Candon, Michael; Carrese, Robert; Ogawa, Hideaki; Marzocca, Pier.

30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016. International Council of the Aeronautical Sciences, 2016. (30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016).

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

Candon, M, Carrese, R, Ogawa, H & Marzocca, P 2016, Characterization of the nonlinear aeroelastic behavior of an airfoil with freeplay and aerodynamic nonlinearity. in 30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016. 30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016, International Council of the Aeronautical Sciences, 30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016, Daejeon, Korea, Republic of, 9/25/16.
Candon M, Carrese R, Ogawa H, Marzocca P. Characterization of the nonlinear aeroelastic behavior of an airfoil with freeplay and aerodynamic nonlinearity. In 30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016. International Council of the Aeronautical Sciences. 2016. (30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016).
Candon, Michael ; Carrese, Robert ; Ogawa, Hideaki ; Marzocca, Pier. / Characterization of the nonlinear aeroelastic behavior of an airfoil with freeplay and aerodynamic nonlinearity. 30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016. International Council of the Aeronautical Sciences, 2016. (30th Congress of the International Council of the Aeronautical Sciences, ICAS 2016).
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