Noise Cancellation Transducer Development Program.

Abstract

This report describes the development and ground testing of an acoustic sensor to detect boundary layer transition on models in high acoustic noise wind tunnel facilities. The noise cancellation transducer utilizes the Boundary Layer Acoustic Monitor (BLAM) detection concept to monitor the flow and employs a subtractive technique to cancel out coherent noise components to improve the signal to noise ratio.

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Document Details

Document Type
Technical Report
Publication Date
May 31, 1979
Accession Number
ADA082801

Entities

People

  • Robert T. Winnicki
  • Vernon D. Peckham

Organizations

  • Kaman Corporation

Tags

Communities of Interest

  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Boundary Layer
  • Boundary Layer Transition
  • Contractors
  • Detectors
  • Digital Data
  • Fluid Dynamics
  • Frequency Bands
  • Materials
  • Materials Laboratories
  • Measurement
  • Noise
  • Spectrum Analyzers
  • Test Facilities
  • Turbulent Flow
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Fluid Dynamics.