Transonic Buffet of a Supercritical Airfoil

Abstract

This investigation was carried out in the Institute for Aerospace Research (IAR) 2D High Reynolds Test Facility (Ref. 1 to Ref. 3 and Fig. 1) to study the buffet characteristics of a supercritical airfoil DGK No. I (Fig. 2). Steady unsteady surface pressure and normal force were measured at various angles of attack and Mach numbers. The statistical properties of the normal force and pressure were carried out by spectral analyses. Buffet onset boundaries were evaluated from the divergence of the fluctuating normal force while buffet intensities were determined from the normal force measurements. The attached and separated flow regions on the airfoil as well as the merging of a shock induced separation bubble with the trailing edge separation region were determined by skin friction measurements.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2000
Accession Number
ADP010720

Entities

People

  • X. Z. Huang

Organizations

  • National Research Council Canada

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Airfoils
  • Boundary Layer
  • Cross Correlation
  • Dynamic Response
  • Frequency
  • Mach Number
  • Measurement
  • Power Spectra
  • Pressure Distribution
  • Pressure Measurement
  • Shock Waves
  • Skin Friction
  • Static Pressure
  • Supercritical Airfoils
  • Test Facilities
  • Trailing Edges
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Fluid Dynamics.
  • Naval Engineering and Maritime Security

Technology Areas

  • Space
  • Space - Hall-Effect Thruster