THE EFFECTIVENESS OF BASE-BLEED IN REDUCING DRAG OF BOAT-TAILED BODIES AT SUPERSONIC VELOCITIES

Abstract

The effectiveness of reducing the drag of a square-based projectile by bleeding air into a hollow in the base has been established by means of wind tunnel tests. This report describes both a brief free-flight experimental test and some theoretical calculations made to determine the effect of base-bleed on a boat-tailed projectile. There was no decrease in drag.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1960
Accession Number
AD0234315

Entities

People

  • Elizabeth R. Dickinson

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Base Pressure
  • Birds
  • Buildings And Structures
  • Drag
  • Flight
  • Free Flight
  • Friction
  • Internal Friction
  • Maryland
  • Method Of Characteristics
  • Munitions
  • Projectiles
  • Research Facilities
  • Test Vehicles
  • Wind Tunnel Tests
  • Wind Tunnels

Readers

  • Aerodynamics/Aeronautics.
  • ballistics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow