User's Manual: Extended Capability Magnus Rotor and Ballistic Body 6-DOF Trajectory Program

Abstract

A six-degrees-of-freedom trajectory program for quasi-symmetric rigid bodies is described. The equations of motion are developed such that either a body-fixed or fixed-plane moving coordinate system can be utilized. Provision is made for large angle and angular rate motions, such as are experienced by magnus rotor munitions. The aerodynamic system permits the usual aeroballistic coefficients to be expressed as tabular functions of angle of attack and Mach number; in addition, the magnus force, magnus moment, and rolling moment coefficients can be tabular functions of the nondimensional spin parameter, pd/ 2V. Additional aerodynamic terms are provided to account for body-fixed aerodynamic asymmetries and/or control inputs, aerodynamic roll angle effects, flow asymmetry with respect to the angle of attack plane at zero spin, and lateral c. g. offset. The computer program is written in General Fortran IV language compatible with CDC 6400, IBM 360, and GE 635 data processing machines. Included in the report are the program input and output formats, flow charts of the main program subroutines, and a complete program listing.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1970
Accession Number
AD0877852

Entities

People

  • James E. Brunk

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Air Force
  • Air Force Facilities
  • Attack Aircraft
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Equations
  • Equations Of Motion
  • Government (Foreign)
  • Governments
  • Mach Number
  • Molecular Dynamics
  • Orientation (Direction)
  • Plastic Explosives
  • Simulations
  • Trajectories

Fields of Study

  • Physics

Readers

  • Computer Science.
  • Control Systems Engineering.