SWIMMING HINGED HYDROFOILS,

Abstract

Lift, drag, and power input were measured on three configurations of a small, symmetrical hydrofoil that was mechanically oscillated in a two-dimensional water flow. The tests included oscillations of different amplitudes in combined heaving and pitching of the rigid, single-hinged, and double-hinged hydrofoils, and simple oscil lations (waving) of the hinged hydrofoils with one point fixed. The drag coefficients (posi tive and negative) are compared with Wu's theory of swimming hydrofoils. The Wu theory can suc cessfully predict the thrust of an oscillating hydrofoil, whether it is rigid or hinged. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1963
Accession Number
AD0426536

Entities

People

  • Glenn H. Bowlus
  • Howard R. Kelly

Organizations

  • Naval Air Weapons Station China Lake

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Coefficients
  • Flow
  • Hydrofoils
  • Oscillation
  • Planform
  • Shape
  • Swimming
  • Two Dimensional
  • Water Flow

Readers

  • Aerodynamics/Aeronautics.
  • Marine Propulsion Engineering and Naval Architecture
  • Snow Cover Descriptors for Reptiles and Their Illustrations.