Modal Expansion Functions Combined with EFIE Applied to Air Intake/Engine RCS Computations

Abstract

In this paper we will describe a sub-domain method based on integral equations devoted to the RCS analysis of Air Intake and rotating fans. The accuracy and efficiency of theses techniques will be demonstrated for the CHANNEL 1/4 scaled mock-up. During the computation a set of sub-domain will be calculated and connected in a final step. The RCS results will be compared with measurements on the CHANNEL mock-up for 2 frequencies. We will also discuss the accuracy of this formulation using a modal field expansion on a fictitious surface between the fixed and rotating wheels of the CHANNEL compressor.

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Document Details

Document Type
Technical Report
Publication Date
Apr 23, 2004
Accession Number
ADA438711

Entities

People

  • Andre Barka
  • Beatrice Fromentin
  • Sophie Langlet

Organizations

  • Office National d'Études et de Recherches Aérospatiales

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Air Intakes
  • Computations
  • Equations
  • Information Operations
  • Instructions
  • Integral Equations
  • Mathematical Analysis
  • Mathematics
  • Measurement

Readers

  • Aerodynamics.
  • Calculus or Mathematical Analysis
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering