Laminar-Turbulent Transition in High-Speed Compressible Boundary Layers with Curvature: Non-Zero Angle of Attack Experiments

Abstract

This grant supported the work of two additional graduate students in the area of high speed boundary layer transition. The non-zero angle of attack measurements were delayed, to reduce the risk of damaging the model, currently in use at zero angle of attack (AOA). Instead, a high sensitivity laser differential interferometer is being developed, for non-intrusive high bandwidth measurements of instability waves. Work towards the larger wind tunnel discussed in the proposal was also advanced, through measurements of the effect of elevated driver tube temperatures on the extent of quiet flow. Apparatus for placement of the elliptic cone at a 3-degree AOA has been designed; these measurements will commence on completion of the zero AOA measurements, late in 1997.

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Document Details

Document Type
Technical Report
Publication Date
Aug 15, 1997
Accession Number
ADA329733

Entities

People

  • Steven H. Collicott
  • Steven P. Schneider

Organizations

  • Purdue University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Bandwidth
  • Boundaries
  • Boundary Layer
  • Boundary Layer Flow
  • Boundary Layer Transition
  • Hot Wire
  • Instability
  • Instrumentation
  • Interferometers
  • Layers
  • Measurement
  • Measuring Instruments
  • Sensitivity
  • Students
  • Transitions
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Radar Systems Engineering.

Technology Areas

  • Directed Energy