Interference-Free Wind-Tunnel Flows by Adaptive-Wall Technology.

Abstract

The adaptive-wall or self-correcting wind tunnel has been proposed for such regimes as transonic and V/STOL where wall effects are large and cannot be corrected. The power and generality of the concept are pointed out. In a two-dimensional transonic embodiment in the Calspan One-Foot Tunnel, the scheme has been shown to work at lower transonic Mach numbers. Several practical problems are cited, including instrumentation, the nature of the wall modification, and convergence of the iterative procedure. Moreover, questions of shock-wave neutralization at the wall and probable configuration of three-dimensional embodiments are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1977
Accession Number
ADA034889

Entities

People

  • A. Ritter
  • J. C. Erickson Jr.
  • R. J. Vidal
  • W. R. Sears

Organizations

  • Calspan

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Materials and Manufacturing Processes
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Flow
  • Flow Fields
  • Fluid Dynamics
  • Geometry
  • Instrumentation
  • Jet Propulsion
  • Mach Number
  • Mathematics
  • Measurement
  • Mechanical Engineering
  • Military Research
  • Shock Waves
  • Short Takeoff Aircraft
  • Three Dimensional
  • Two Dimensional
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerodynamics/Aeronautics.
  • Systems Analysis and Design