====== Balloon Trajectory programs ======

  * [[http://www.habhub.org/predict|CU Spaceflight Landing Predicton]] - Similar to wyoming however is quicker to run and has more variables such as ascent and drag factor so you can tailor make your predicted trajectory flight path.
  * [[http://weather.uwyo.edu/polar/balloon_traj.html|University of Wyoming's Balloon Trajectory program]] - Assumes about a 270m/min (4.5m/sec) ascent rate and 4.9m/sec (low altitude) descent rate.
  * [[http://astra-planner.soton.ac.uk/|University of Southampton's Balloon Trajectory program]] - Can run Monte Carlo Simulation to give spread of likely landing area.