The Orbital and Celestial Mechanics Website

Freeware


Welcome

This web site describes a collection of Windows XP/Vista computer programs that can be used to solve a variety of practical problems in astrodynamics and celestial mechanics.  Several of these applications were written using Compaq Visual Fortran, version 6.6, and the DISLIN library (www.dislin.de) for the graphical user interface (GUI) and analysis graphics.  All executable programs are offered as freeware and can be re-distributed for non-commercial purposes.  The Fortran source code for several computer programs is available for purchase.

Last updated  May 11, 2009

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Shadow Conditions of Satellites in Circular Earth Orbits

PDF document                       Zipped file of executable program

 

Hohmann Orbit Transfer

PDF document                       Zipped file of executable program

 

Compute C3, RLA and DLA from an ECI State Vector

PDF document                       Zipped file of executable program

 

Impulsive Hyperbolic Injection from a Circular Park Orbit

PDF document                       Zipped file of executable program

 

Cowell’s Method for Heliocentric Orbits

PDF document                       Zipped file of executable program

JPL DE421 ephemeris binary data file

 

Two DISGCL Orbital Mechanics Examples

PDF document                       Zipped file of source code

 

EME2000 to/from True-of-date State Vector Conversion

PDF document                       Zipped file of executable program

 

Aerospace Trajectory Optimization Using Direct Transcription and Collocation

PDF document                       Zipped file of executable program

 

Optimal Low-thrust Trajectory Optimization with MIPELEC

PDF document                       Zipped file of executable program

 

Coplanar, Finite-burn Earth-to-Mars Transfer Using BNDSCO

 

Zipped file of source code and executable program

 

Additional information about the BNDSCO computer program including a PDF user’s manual, source code and other examples can be found at Professor Oberle’s web site which is located at www.math.uni-hamburg.de/home/oberle/software.html

 

Rapid Optimization of Multiple-Burn Rocket Flights

 

PDF copy of NASA CR-1430 zipped file of executable program and data file

 

The Fortran source code for this application can be ordered for $79 using the secure and flexible e-commerce services provided by PayPal (www.paypal.com).  PayPal accepts online payments by credit card and a PayPal account is not required to make a purchase.  After placing your order, you will receive an email within 24 hours with a password that will permit you to extract the source code.  This zipped file can be downloaded here.  To purchase this software click here.

 


Web site contents copyright © 1996-2009 by C. David Eagle.  All rights reserved.

cdeaglejr@yahoo.com          www.cdeagle.com