Frequencies of the Alternating Forces due to Interactions of Contrarotating Propellers

Abstract

The frequencies of the fluctuating forces resulting from interactions between a pair of contrarotating propellers are calculated. The frequencies may equal the sum of the blade frequencies of the two propellers and harmonics of these frequencies; but only certain combinations are possible, depending on the blade numbers of the propellers. A table presents the results in numerical form for various combinations of propeller blade numbers.

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Document Details

Document Type
Technical Report
Publication Date
Dec 08, 1975
Accession Number
ADA030831

Entities

People

  • J. P. Breslin
  • M. Strasberg

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Blades
  • Classification
  • Fourier Series
  • Frequency
  • Harmonics
  • Marine Propulsion
  • New Jersey
  • Nonuniform
  • Propeller Blades
  • Propellers
  • Security
  • Standards
  • Stratified Fluids
  • Time Dependence
  • Water Tunnels

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Regression Analysis.