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On wind tunnel wall pressure fluctuations during an unsteady test of a fighter model

Davari, A. R ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. Publisher: 2005
  3. Abstract:
  4. An intensive experimental work was conducted to investigate variations of the wall pressure time history at different locations during the test of a fighter aircraft model in a sinusoidal pitching motion. The model used in this research was a standard dynamics model known as SDM. Dynamic data were taken at various combinations of reduced frequencies, mean angles of attack and oscillation amplitudes. Time variations of the static pressure at several locations on the wind tunnel wall have been recorded using sensitive pressure transducers. The results show that the wall pressure oscillation is highly affected by the model motion and varies with the free stream Mach number, oscillation amplitude and frequency and the model mean angle of attack. © 2005 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved
  5. Keywords:
  6. Angles of attack ; Dynamics modeling ; Free stream mach numbers ; Modeling motions ; Oscillation amplitude ; Reduced frequency ; Time variations ; Wind tunnel walls ; Aircraft models ; Angle of attack ; Fluid dynamics ; Identification (control systems) ; Wind tunnels ; Pressure effects
  7. Source: 35th AIAA Fluid Dynamics Conference and Exhibit, Toronto, ON, 6 June 2005 through 9 June 2005 ; 2005 ; 9781624100598 (ISBN)
  8. URL: https://arc.aiaa.org/doi/abs/10.2514/6.2005-4745