Design and Fabrication of Coanda Suppressor Flow Visualization Model,

Abstract

Because the Navy Coanda noise suppressor exhibited three-dimensional flow anomalies a 1/2oth scale transparent laboratory model was fabricated to provide for visualization of the internal flow. Identification of flow anomalies and methods of correcting them by geometric design changes thus eliminating local acoustic lining erosion was the primary purpose for the model. In addition, model experimental flow data were to be correlated to analytical computer codings so they could be applied to Coanda suppression system designs with a higher level of confidence.. The 1/2oth scale transparent model was fabricated and installed in the Boeing-Wichita air laboratory. Several checkout runs were made and the functional capability of the system was verified. These checkout runs showed that the model accurately represents the full scale flow and recirculation that had been deduced from the full scale demonstration tests. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 10, 1977
Accession Number
ADA107436

Entities

People

  • Dale W. Brees

Organizations

  • Boeing

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computer Programming
  • Computers
  • Exhaust Gases
  • Fabrication
  • Flow
  • Flow Fields
  • Flow Visualization
  • Generators
  • Jet Engines
  • Layers
  • Mach Number
  • Model Tests
  • Photographs
  • Scale Models
  • Smoke Generators
  • Three Dimensional

Readers

  • Combustion and Flow Dynamics.
  • Radar Systems Engineering.
  • Software Engineering