A Method for Obtaining Aerodynamic Coefficients from Yawsonde and Radar Data

Abstract

A numerical integration method for the reduction of yawsonde data from instrumented projectiles in free flight has been developed. Yawsonde data represent two-dimensional information (solar aspect angle and spin) while the actual motion is three-dimensional (pitch, yaw, and spin). The method obtains a best fit of the aerodynamic coefficients in the equations of motion using numerical integration. The coefficients are iteratively adjusted. Linear aerodynamic coefficients have been derived from the flight of an M549, 155mm rocket assisted projectile.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1973
Accession Number
AD0759482

Entities

People

  • R. H. Whyte
  • W. H. Mermagen

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Angular Motion
  • Aspect Angle
  • Coordinate Systems
  • Equations
  • Equations Of Motion
  • Flight
  • Free Flight
  • Mach Number
  • Orientation (Direction)
  • Physical Properties
  • Projectiles
  • Rocket Assisted Projectiles
  • Three Dimensional
  • Trajectories
  • Wind Tunnel Tests
  • Wind Tunnels
  • Wind Velocity

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Calculus or Mathematical Analysis
  • ballistics.