A STUDY OF RADIAL-FLOW FANS FOR GEM PROPULSION SYSTEM APPLICATIONS

Abstract

This report presents the overall results of a study of the application of rotating-diffuser centrifugal fans (RD fans) as air movers to peripheral-jet ground effect machines (GEMs). The design problems of the duct- RD fan system are discussed. It is proposed that the RD fan be used in the GEM without a conventional volute by using a radial-flow delivery technique. A study of environmental, structural, and fabrication problems of RD fans is also reported. In particular, a state-of-the-art survey of applied loads for GEMs insofar as they affect the design of an RD fan system is presented. Finally, the results of two design studies, applying the RD fan to two markedly different GEM configurations, are reported. In conclusion, results of the overall investigation indicate that RD fans are well suited to GEM applications because of high aerodynamic efficiency, low weight, and operational advantages, such as sturdiness and quietness.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1964
Accession Number
AD0610522

Entities

People

  • G. D. Boehler
  • J. A. Balciunas
  • J. E. Lieser
  • J. S. Karwoski
  • W. Foshag

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Human Systems
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aircraft Equipment
  • Aircraft Industry
  • Aircrafts
  • Airframes
  • Boundary Layer
  • Computational Fluid Dynamics
  • Engineers
  • Ground Effect
  • Ground Effect Machines
  • Guide Vanes
  • Hydrodynamics
  • Mechanics
  • Ship Model Basins
  • Test And Evaluation
  • Three Dimensional
  • Two Dimensional

Readers

  • Aerodynamics.
  • Systems Analysis and Design