If you copy the simulator to another website or some other medium, please let me know so I can inform you of any updates. Copyright 2001 David Blumenthal. All Rights Reserved. Portions Copyright 1999 John Kallend. Inc. What it does Simulates the most likely trajectories of groups of skydivers in freefall with different fall rates, given the fall rates, airplane speed, and winds.
Skydivers maintain a constant attitude with respect to the relative wind, from exit to breakoff.
At breakoff, all jumpers maintain a flat track with a fallrate of 110 MPH and a horizontal true airspeed of 35 MPH, which is held until opening altitude is reached. For large formation skydive groups, this may not be enough to ensure safe separation of the jumpers within the group. Be sure that the horizontal separation between groups is enough to account for the additional tracking a large group will need to do. The windspeed readouts show true airspeed. The wind direction readouts indicate the heading the wind is from, as is conventional in aviation.