EXPERIMENTAL DETERMINATION OF HELICOPTER TIP VORTEX GEOMETRY USING SMOKE

Abstract

Experimental techniques were developed and proven to be successful as a means of providing correlation with the analytical treatment required to predict the actual tip vortex geometry of a helicopter rotor. The data were obtained by emitting smoke from the tip of one blade of a two-bladed rotor mounted in a wind tunnel so that the smoke is entrained by the tip vortex. The resulting smoke trace is photographed by a pair of cameras and a data reduction process is used to eliminate lens distortion and parallax.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1969
Accession Number
AD0699415

Entities

People

  • F. S. Stoddard
  • M. P. Scully

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Blade Tips
  • Blades
  • Cameras
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Data Reduction
  • Digital Computers
  • Distortion
  • Geometry
  • Heating Elements
  • Helicopter Rotors
  • Helicopters
  • Miss Distance
  • Photographs
  • Three Dimensional
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Combustion and Flow Dynamics.
  • Geodesy