The Regional Nature of Aerodynamic Jump

Abstract

It is shown that aerodynamic jump for a nonspinning kinetic energy penetrator is neither a point change in direction, nor a curving change that takes place over a domain of infinite extent, as conventional definitions may infer. Rather, with the aid of an alternate kinematical definition, it is shown that aerodynamic jump for such a projectile is a localized redirection of the center-of-gravity motion, caused by the force of lift due to yaw over the relatively short region from entry into free flight until the yaw reaches its first maximum. A rigorous proof of this statement is provided, but the primary objective of this report is to provide answers to the questions: What is aerodynamic jump, what does it mean, and what aspects of the flight trajectory does it refer to, or account for?

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1999
Accession Number
ADA360570

Entities

People

  • Mark Bundy

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Angular Motion
  • Center Of Gravity
  • Computational Fluid Dynamics
  • Coordinate Systems
  • Equations
  • Flight
  • Free Flight
  • Geometry
  • Gravity
  • Line Of Fire
  • Military Research
  • Molecular Dynamics
  • Munitions
  • Projectiles
  • Trajectories
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Fluid Dynamics.
  • Systems Analysis and Design

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference