The Measurement of Unsteady Pressures in Wind Tunnels

Abstract

Practical solutions to the problem of accurately measuring unsteady pressures in wind tunnels are described, with emphasis on the response of pressure systems, calibration techniques and equipment, and wind-tunnel instrumentation. Basic guides for the selection of a pressure-gage-volume-connecting-tubing system are given. A cam-type pulsator calibrator with a sinusoidal pressure variation up to + or - 3 psi and a frequency range up to 5000 c/sec is described. The minimum number of pressure gages required for lift and moment measurements is discussed. A brief comment on the interpretation of pressure fluctuations in terms of velocity fluctuations is given.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1958
Accession Number
AD0262484

Entities

People

  • Eugene L. Jr Davis

Organizations

  • AGARD

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Accuracy
  • Bulk Modulus
  • Dynamic Response
  • Elastic Properties
  • Equations
  • Fluid Flow
  • Frequency Response
  • Measurement
  • Modulus Of Elasticity
  • Pressure Distribution
  • Pressure Gages
  • Pressure Measurement
  • Sea Level
  • Shock Tubes
  • Steady Flow
  • Transmission Lines
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Fluid Dynamics.