Vivian Meazza:

Vivian Meazza:

Attached are the modified files to add buoyancy as a parameter for a
ballistic object. It may be set by adding

<buoyancy>x</buoyancy> to the submodel .xml file, where x is the appropriate
value (ft per sec2):

	32   neutral buoyancy - contrails
	>32  positive buoyancy - exhaust plumes
	(0   non-op - default value)

If <buoyancy>x</buoyancy> is not used, then there is no effect on the
current ballistic model