The Effects on Rotor Nonuniform Inflow Harmonic Content of Uneven Circumferential Distribution of Jet Engine Inlet Guide Vanes.

Abstract

A computative parametric study was conducted to investigate the effects of vane section geometry, vane number, and primarily, uneven circumferential vane spacing on the harmonic content of the wake field produced by a row of jet engine inlet guide vanes (IGV). As parameters were varied, the harmonic content of the resulting wake field was analyzed for its potential effect on unsteady pressures at the rotor. A semi-empirical model is presented which was used to generate the two-dimensional flow field downstream of the IGV plane. Results show that uneven angular spacing of IGV should not be employed for reducing unsteady pressures experienced by the rotor. In fact, manufacturing tolerances, relative to IGV angular location, of evenly spaced vanes should be minimized to minimize unsteady pressures. Keywords: Harmonic content; Wake fields; Inlet guide vanes.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1986
Accession Number
ADA164629

Entities

People

  • Margaret R. Hinsman

Organizations

  • Woodrow Wilson International Center for Scholars

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Classification
  • Engines
  • Flow
  • Flow Fields
  • Fluid Flow
  • Geometry
  • Guide Vanes
  • Inlet Guide Vanes
  • Inlets
  • Jet Engine Inlets
  • Jet Engines
  • Nonuniform
  • Nonuniform Flow
  • Security
  • Stratified Fluids
  • Two Dimensional
  • Two Dimensional Flow

Readers

  • Combustion and Flow Dynamics.
  • Control Systems Engineering.
  • Trauma or Military Medicine

Technology Areas

  • Space
  • Space - Hall-Effect Thruster
  • Space - Spacecraft Maneuvers