EXPERIMENTAL INVESTIGATION OF THE UNSTEADY FORCES ACTING ON A REACTANGULAR FLAT PLATE DUE TO THE ACTION OF A PROPELLER,

Abstract

An experimental study was undertaken in a water tunnel to determine the effect of propeller blade thickness, operating KT value, propeller tip-plate clearance and plate width on the forces, moments and pressure induced on a flat plate. The plate was oriented so as to be parallel with the rotational axis of the propeller. Propellers having three blades were tested, with one propeller design having blade thicknesses double that of the other but with both propellers having equal thrust - RPM performance. Plate widths were equal to 1 and 3 propeller radii, with the length of the plate constant at 6 propeller radii. The pressure was measured by a small flush mounted transducer located in the center of the plate surface and directly over the propeller. A comparison of certain theoretical predictions with the experimental force and pressure data resulted in generally good agreement. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1968
Accession Number
AD0838793

Entities

People

  • August F. Lehman

Tags

DTIC Thesaurus Topics

  • Agreements
  • Blades
  • Clearances
  • Engineering
  • Mechanical Engineering
  • Propeller Blades
  • Propeller Components
  • Propellers
  • Propulsion Systems
  • Thickness
  • Transducers
  • Tunnels
  • Water Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering