Subsonic Cascade Wind Tunnel Tests Using a Compressor Configuration of DCA Blades.

Abstract

Tests are reported in which air incidence angle was varied to a cascade of 20 blades, 5 inches in chord with aspect ratio of 2.0 and solidity of 1.67. Preliminary blade element performance data were obtained using pneumatic probe surveys and surface pressures were also measured. Results of preparatory tests of a similar cascade of 15 C-series blades at a solidity of 1.28 are also included. Whereas the flow in the C-series blading cascade was always acceptable, the flow in the DCA blading cascade was not acceptable at negative incidence angles. A modification of the cascade inlet guide vanes is recommended which will guarantee periodic conditions and serve to generate more nearly uniform inlet flow at all test conditions. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1981
Accession Number
ADA104597

Entities

People

  • Frank S. Cina

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acquisition
  • Aspect Ratio
  • Boundary Layer
  • Data Acquisition
  • Data Reduction
  • Dynamic Pressure
  • Guide Vanes
  • Inlet Guide Vanes
  • Measurement
  • Periodic Variations
  • Pressure Distribution
  • Pressure Measurement
  • Test And Evaluation
  • Test Facilities
  • United States
  • Wind Tunnel Tests
  • Wind Tunnels

Readers

  • Aerodynamics.
  • Systems Analysis and Design