The Experimental Generation of Streamwise Gusts and their Impact on a Finite-Span Wing - presented by Prof John Farnsworth

The Experimental Generation of Streamwise Gusts and their Impact on a Finite-Span Wing

Prof John Farnsworth

Prof John Farnsworth
The Experimental Generation of Streamwise Gusts and their Impact on a Finite-Span Wing
Prof John Farnsworth
John Farnsworth
University of Colorado Boulder

Under normal operation, aircraft and wind turbines frequently encounter gusts, or discrete unsteady variations in the direction and magnitude of the freestream velocity. Streamwise gusts, which impose changes in the magnitude of the freestream, can dramatically alter the aerodynamic response of these systems when the gust length-scales, time-scales or magnitudes are commensurate with the steady operating conditions of these systems. To study these interactions a unique unsteady low-speed wind tunnel facility was constructed at the University of Colorado Boulder which can generate both convective and global streamwise velocity disturbances. The design, modeling, and performance of this facility will be presented along with the aerodynamic response of a canonical finite-span rectangular wing section to a time-varying freestream. More specifically, the seminar will focus on how the convective nature of the streamwise velocity disturbances can couple with wing sweep to impose dramatic variations in the pitching moment response of a simple wing section. In addition to this primary topic, a summary of other basic research efforts ongoing in the Experimental Aerodynamics Laboratory at the University of Colorado Boulder will also be given.

References
  • 1.
    D. Gloutak et al. (2024) Aerodynamic Performance of a Finite-Span Wing in a Time-Varying Freestream. AIAA Journal
  • 2.
    J. Farnsworth et al. (2020) Design and qualification of an unsteady low-speed wind tunnel with an upstream louver system. Experiments in Fluids
  • 3.
    D. Gloutak et al. (2023) Aerodynamic Performance of Swept Wings in Unsteady Streamwise Flow.
  • 4.
    D. Gloutak et al. (2022) Impact of Streamwise Gusts on the Aerodynamic Performance of a Finite-Span Wing.
Grants
    Air Force Office of Scientific ResearchFA9550-18-1-0311Air Force Office of Scientific ResearchFA9550-21-1-0133
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Aerodynamics & Control Seminars
Department of Aeronautics (Imperial College London)
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J. Farnsworth (2024, June 14), The Experimental Generation of Streamwise Gusts and their Impact on a Finite-Span Wing
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Listed seminar This seminar is open to all
Recorded Available to all
Video length 49:39
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