SHROUDED PROPELLER TEST PROGRAM METHOD DEVELOPMENT

Abstract

This report contains and summarizes a program conducted for the development of an analytic shrouded propeller performance prediction method. The Therm Advanced Research, Inc. shrouded propeller theory was used as the basis of the method. Hamilton Standard included propeller geometry, shroud drag, and the effect of centerbody. Furthermore, additional adjustments were made in an attempt to extend its applicability to lower velocities and to shrouds with greater thickness and camber than were considered in the basic theory. The method was computerized, and the computer program was then used in evaluating the computational procedure by comparisons with the test data obtained in a wind tunnel test facility. In general, the method agreed well with test for Mach numbers greater than or equal to 0.20 for propeller performance and shroud surface pressure distributions. The net thrust (shroud plus propeller) comparisons were not as favorable, due to the simplifying assumptions in both the inviscid net thrust and shroud drag computations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1968
Accession Number
AD0828077

Entities

People

  • A. A. Peracchio
  • Rose Worobel

Organizations

  • United Technologies Corporation

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Cartesian Coordinates
  • Computer Programs
  • Flow Fields
  • Geometric Forms
  • Geometry
  • Lines (Geometry)
  • Mach Number
  • Pressure Distribution
  • Pressure Gradients
  • Pressure Measurement
  • Shrouded Propellers
  • Static Pressure
  • Test Facilities
  • Three Dimensional
  • Two Dimensional
  • Wind Tunnels

Readers

  • Aerodynamics.
  • Systems Analysis and Design