Force and Moment Characteristics of Six High-Speed Rudders for Use on High-Performance Craft

Abstract

Six rudders with a geometric aspect ratio of 1.5 and widely varying section shapes were constructed to determine the effect of section shape on the cavitating performance of high-speed rudders. Experiments were conducted in the 24-in. variable-pressure water tunnel at cavitation indices between 4.0 and 0.5 and an angle of attack range from -5 to +35 deg. Section shape had little effect on the lift curve slope or on the maximum lift coefficient. However, the blunt base sections had substantially higher drag coefficients throughout the normal operating range of rudder angles. Rudder stock torque was significantly affected by section shape and cavitation index.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1973
Accession Number
AD0772098

Entities

People

  • David W Taylor
  • Douglas L. Gregory

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Aspect Ratio
  • Engineering
  • Flow
  • Flow Separation
  • Leading Edges
  • Marine Engineering
  • Measurement
  • Model Basins
  • Research Facilities
  • Reynolds Number
  • Schematic Diagrams
  • Ship Design
  • Ship Model Basins
  • Surfaces
  • Water Tunnels
  • Wind Tunnels

Readers

  • Aviation Science / Aeronautics.
  • Fluid Mechanics and Fluid Dynamics.
  • Marine Propulsion Engineering and Naval Architecture