Aerodynamic Characteristics of Fin- and Flare-Stabilized 25 mm XM910 Prototypes

Abstract

Test firings of prototype fin- and flare-stabilized 25 mm training rounds were conducted. The fin-stabilized rounds were found to be capable of fulfilling all of the training round ballistic requirements. The flare- stabilized rounds were studied as a possible lower cost alternative. Initially, a large angle flare design, similar to existing tank gun training round, was tested, but data showed the configuration drag coefficient was too high. Subsequent computer predictions indicated that a small angle flare would have significantly lower drag and sufficient stability for flight. A four-degree flare was fabricated and fired, confirming the drag and stability predictions.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1987
Accession Number
ADA191683

Entities

People

  • Ilmars Celmins

Organizations

  • Ballistic Research Laboratory

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Aerodynamic Characteristics
  • Base Pressure
  • Boundary Layer
  • Center Of Gravity
  • Classification
  • Commerce
  • Drag
  • Geometry
  • Low Drag
  • Mach Number
  • Mass Flow
  • Muzzle Velocity
  • Physical Properties
  • Security
  • Tank Guns
  • Trajectories

Readers

  • Aerodynamics/Aeronautics.
  • Software Engineering
  • ballistics.