A Coning Motion Apparatus for Hydrodynamic Model Testing in a Non-Planar Cross-Flow

Abstract

As part of continuing research into the flow about slender bodies of revolution, a coning motion apparatus for hydrodynamic model testing was built and demonstrated. This is the first known use of a rotary balance apparatus for external flow hydrodynamic applications. The vorticity shed by the hull and appendages creates a wake field that interacts with the velocity distribution over the vehicle's surface. This in turn effects the surface pressure distribution and thus, when integrated over the body's surface, the total force on the hull/appendage combination. It is this interaction that prevents a closed-form analytic solution to the problem. Keywords: Fluid mechanics.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1989
Accession Number
ADA213431

Entities

People

  • David C. Johnson

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Angular Momentum
  • Buoyancy
  • Computers
  • Cross Flow
  • Data Acquisition
  • Engineering
  • Filters
  • Fluid Mechanics
  • Measurement
  • Mechanical Engineering
  • Pressure Distribution
  • Reynolds Number
  • Rotation
  • Strain Gages
  • Test Facilities
  • Water Tunnels

Fields of Study

  • Engineering

Readers

  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.
  • Marine Hydrodynamics