The Experimental Study of Transition and Leading Edge Contamination on Swept Wings (Etude De La Transition Et De La Contamination De Bord D'Attaque Sur Alles En Fleche)

Abstract

This study is concerned with an experimental investigation of the different ways in which turbulence appears in an incompressible laminar boundary layer on a swept wing. Transition is detected by the use of hot films attached to the model. The results of two series of measurements are given: in the first, the sensors are placed along the chord and the recorded signals allow the analysis of problems in streamwise and crossflow instability, and leading edge contamination. In the second series of experiments, hot films are distributed along the span, close to the leading edge. Leading edge contamination is studied in detail and possibilities of relaminarisation are considered.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1992
Accession Number
ADA255870

Entities

People

  • D. Arnal
  • J. C. Juillen

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Airfoils
  • Boundary Layer
  • Equations
  • Flow
  • Flow Visualization
  • Geometry
  • Layers
  • Leading Edges
  • Pressure Distribution
  • Pressure Gradients
  • Pressure Measurement
  • Reynolds Number
  • Swept Wings
  • Three Dimensional
  • Turbulent Boundary Layer
  • Turbulent Flow
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Environmental Remediation and Restoration.
  • Small Business Innovation Research Program (SBIR) EDI Research and Innovation.