An Investigation of Three-Dimensional Wall Interference in a Variable Porosity Transonic Wind Tunnel

Abstract

This report presents the results of an experimental program to measure the wall interference effects on an idealized lifting model in the Mach number range from 0.6 to 1.3. The interference phenomena were evaluated by direct comparisons of data obtained in the Propulsion Wind Tunnel (16T) and the Aerodynamic Wind Tunnel (4T) at identical test conditions. The results show how a flow angularity which is apparently a function of model attitude and configuration can be induced into the tunnel flow field and be misconstrued as an upwash interference. The porosity schedule currently used in Tunnel 4T is studied for blockage interference.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1974
Accession Number
AD0787658

Entities

People

  • T. W. Binion Jr.

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Airfoils
  • Boundary Layer
  • Engineering
  • Flow
  • Flow Fields
  • Free Stream
  • Instrumentation
  • Mach Number
  • Measurement
  • Pressure Distribution
  • Pressure Measurement
  • Supercritical Flow
  • Test Facilities
  • Three Dimensional
  • Transonic Wind Tunnels
  • Wind Tunnels

Readers

  • Aerodynamics/Aeronautics.
  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.