A Method for Predicting Thrust Deduction Using Propeller Lifting Surface Theory.

Abstract

An analytical method is presented for predicting the added resistance (thrust deduction) arising from propeller-hull interaction. The theory is formulated in terms of the potential flow about the hull and appendages which are represented by surface singularity distributions. The influence of the propeller is derived from lifting-surface theory including the effects of blade number, thickness, skew, rake, and radial and chordwise load distribution. In order to determine the interaction force, propeller-induced velocities and the modified hull pressure distribution are computed with appropriate corrections to the hull singularities. The axial force is then derived by integration of the pressure on the hull and also by application of the steady-flow Lagally theorem.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1977
Accession Number
ADA047758

Entities

People

  • A. G. Hansen
  • B. D. Cox

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Bodies Of Revolution
  • Boundary Layer
  • Engineering
  • Engineers
  • Geometry
  • Hulls (Marine)
  • Hydrodynamics
  • Load Distribution
  • Measurement
  • Mechatronic Engineering
  • New York
  • Numerical Analysis
  • Pressure Distribution
  • Propeller Blades
  • Ship Model Basins
  • Stratified Fluids

Readers

  • Aerodynamics.
  • Fluid Dynamics.
  • Marine Hydrodynamics