<long_desc>This parameter encodes the ground drag coefficient and the corresponding decrease in wind speed from the plane altitude to ground altitude.</long_desc>
<short_desc>Payload drag coefficient of the dropped object</short_desc>
<long_desc>The drag coefficient (cd) is the typical drag constant for air. It is in general object specific, but the closest primitive shape to the actual object should give good results: http://en.wikipedia.org/wiki/Drag_coefficient</long_desc>
<long_desc>If the system is closer than this distance on passing over the drop position, it will release the payload. This is a safeguard to prevent a drop out of the required accuracy.</long_desc>
<long_desc>The planes known minimal turn radius - use a higher value to make the plane maneuver more distant from the actual drop position. This is to ensure the wings are level during the drop.</long_desc>
