The Effect of Base Bleed on the Drag and Magnus Characteristics of a Rotating Body of Revolution,

Abstract

Base bleed is a technique whereby all or part of the boundary layer is 'bled' from the rear portion of a projectile to the base region. Passage from the model's surface to the base region is by means of concentric cylindrical passageways. The purpose of base bleed is to reduce the Magnus moment on overlong spinning bodies of revolution and to reduce the base drag. Both analytic and experimental results are presented. The boundary layer is represented by means of the momentum thickness.

Document Details

Document Type
Technical Report
Publication Date
Aug 22, 1972
Accession Number
AD0754755

Entities

People

  • Frank J. Regan
  • Virginia L. Schermerhorn

Organizations

  • Naval Ordnance Laboratory

Tags

DTIC Thesaurus Topics

  • Bodies
  • Bodies Of Revolution
  • Boundaries
  • Boundary Layer
  • Geometric Forms
  • Geometry
  • Layers
  • Momentum
  • Physical Properties
  • Projectiles
  • Revolutions
  • Thickness

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)