Unsteady Pressure Loads from Plunging Airfoils

Abstract

Forced unsteady flow separation from a dynamically plunging airfoil was investigated using surface mounted pressure transducers. The transient pressure distributions and integrated lift and drag coefficients were plotted for parametric alterations in mean angle of attack reduced amplitude and reduced frequency. The unsteady loads produced were strongly dependent upon the dynamic stall event. Dynamic similarity for dimensional scaling of plunging motions was shown to be a function of both reduced frequency and amplitude.

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Document Details

Document Type
Technical Report
Publication Date
Nov 07, 1989
Accession Number
ADA229914

Entities

People

  • Chris Kedzie
  • Eric Stephen
  • Michael C. Robinson

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Counter IED
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Airfoils
  • Amplitude
  • Brushless Dc Motors
  • Coefficients
  • Convection
  • Dynamic Pressure
  • Flow
  • Flow Separation
  • Geometry
  • Leading Edges
  • Pressure Distribution
  • Pressure Signatures
  • Pressure Transducers
  • Stepper Motors
  • Transducers
  • Unsteady Flow

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Computational Modeling and Simulation