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RocketWorkbench
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Based on the original Rocket Workbench on SourceForge in CVS at: https://sourceforge.net/projects/rocketworkbench
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RocketWorkbench/rocketworkbench/Documentation/rockflight/WGS84/README

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Initial commit of "Rocket Workbench". Taken from sources in CVS at: https://sourceforge.net/projects/rocketworkbench/ Sources extracted in two steps: 1. Pull entire project tree into a subdir "rwb" via "rsync": rsync -a a.cvs.sourceforge.net::cvsroot/rocketworkbench/ rwb/. 2. Export sources: export CVSROOT=$(pwd)/rwb SUBDIRS="analyser cpropep cpropep-web CVSROOT data libcompat libcpropep libnum libsimulation libthermo prop rocketworkbench rockflight" mkdir rwbx; cd rwbx cvs export -D now ${SUBDIRS} After this (and some backups for safety), the directory content was added to a Git repo: git init . git add *
4 years ago
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  1. WGS-84 modeling constants:
  2. 

  3. Semi-major axis
  4. a = 6378137.0 m
  5. 

  6. Semi-minor axis
  7. b = 6356732.3142 m = a/(1-f)
  8. 

  9. Flattening of ellipsoid
  10. f = 1.0/298.2572235630
  11. 

  12. Eccentricity of ellipsoid
  13. e = 0.081819191 = (2f-f^2)^0.5
  14. 

  15. 2nd zonal harmonic coeff. of gravitational potential
  16. C2,0 = - 484.16685 x 10^-6
  17. 

  18. Earth's gravitational const. (with mass of atmosphere)
  19. GM = 0.3986004418 x 10^15 m3/s2
  20. 

  21. Earth's angular velocity at equator
  22. omega = 7292115 x 10^-11 radians/sec
  23. 

  24. 

  25. 

  26. Centimeter accuracy correction to this model:
  27. http://www.nima.mil/GandG/wgs-84/egm96.html
  28. 

  29.