THEORETICAL INVESTIGATION OF DUCTED PROPELLER AERODYNAMICS, VOLUME 3

Abstract

Problems of the ducted fan and its application in VTOL aircraft are investigated. General considerations are presented for the design of vertical take-off aircraft. The ideal loading of single rotation propellers in a circular duct is examined. The flow field was derived for a non-uniform sink distribution in a circular disk and for a cylindrical non-uniform vortex sheet. The velocity field and forces on a flat plate due to a cylindrical jet with an elliptical cross-section were also derived. Experimental data are given in tabular and graphic form on the interference effect of a jet on the VTOL aircraft. Design requirements of deflection vanes are discussed with the results of an experimental investigation on a cascade of circular arc sections.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1961
Accession Number
AD0266411

Entities

People

  • G. Nomicos
  • Th. Theodorsen

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force Facilities
  • Aircrafts
  • Boundary Layer
  • Coordinate Systems
  • Engineers
  • Flow Fields
  • Fluid Mechanics
  • Geometry
  • Governments
  • Measurement
  • Military Research
  • New York
  • Pressure Distribution
  • Reynolds Number
  • Shrouded Propellers
  • Stratified Fluids
  • War Colleges

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Combustion and Flow Dynamics.