An Investigation of the Effect of Blade Curvature on Centrifugal-Impeller Performance

Abstract

Blade curvatures of geometrically definable shapes and of different blade loadings were compared on basis of particle travel with constant axial velocity along blade surface. Three impellers were tested with vaneless diffuser in variable-component compressor test rig with same conditions and instrumentation. Elliptical blade had highest peak adiabatic efficiency at all equivalent speeds except 1400 and 1600 ft/sec. Circular blade had largest maximum specific capacity at all speeds. Parabolic blade had largest operating range above adiabatic efficiency of 0.70 from pressure ratios of 2.20 to 3.00.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1947
Accession Number
ADA801354

Entities

People

  • Dean M. Dildine
  • Robert J. Anderson
  • William K. Ritter

Organizations

  • National Advisory Committee for Aeronautics

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accumulators
  • Aeronautics
  • Air Temperature
  • Angular Acceleration
  • Blades
  • Centrifugal Compressors
  • Centrifugal Force
  • Compressors
  • Curvature
  • Diameters
  • Diffusers
  • Dynamic Pressure
  • Flow
  • Instrumentation
  • Sea Level
  • Stagnation Pressure
  • Stagnation Temperature

Readers

  • Aerodynamics.
  • Mathematics or Statistics