Methods of Astrodynamics, a Computer Approach

Abstract

A library PASCAL and FORTRAN computer routines to solve various Astrodynamic problems is presented. Diagrams and equations are given for each routine. The main part of the document is the actual code. Rigorous documentation and coding discipline was used during development of these routines. The code contains extensive information for each routine defining Input / Output variables, local variables, constants, coupling, and references. Finally, test cases and answers are presented. References are given, therefore formulas are not derived. THe code presented will run under TURBO PASCAL Ver5.0 +, MICROSOFT FORTRAN Ver 4.0 +, and VAX FORTRAN Ver 4.6. Both langauges have two files, astrodynamic and mathematical. The PASCAL mathematical code includes a number of mathematical operations not inherent to language. The FORTRAN code was developed in LAHEY FORTRAN Ver 3.0 and uses several features of FORTRAN 90. Driver programs are not included since these routines are designed to be a library which one may attach to a main program. These routines were developed for academic use and as such, may not match operational data. Information concerning the latest software version may be obtained from the author.

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Document Details

Document Type
Technical Report
Publication Date
Feb 14, 1991
Accession Number
ADA239662

Entities

People

  • David A. Vallado

Organizations

  • United States Air Force Academy

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Altitude
  • Angular Motion
  • Artificial Satellites
  • Astronautics
  • Coordinate Systems
  • Elevation
  • Equations
  • Flight
  • Latitude
  • Longitude
  • Metal Matrix Composites
  • Orbital Elements
  • Plastic Explosives
  • Real Variables
  • United States
  • Value

Readers

  • Computer Science.
  • Space Exploration and Orbital Mechanics.
  • Theoretical Analysis.