On Wed, 23 Jul 2003 10:07:22 -0500 David Culp <[EMAIL PROTECTED]> wrote:
..cool, then we don't need my F-16 drag shute housing pics. ;-)
Do we have drag shutes modelled?
Yes. There exists a property called /controls/flight/drag-chute which takes a boolean value.
In JSBSim you could add a Kinemat component to the FCS, just like speedbrake, gear or flaps. This would give you an fcs/drag-chute-norm value that you can use by also adding a "Drag-due-to-drag-chute" coefficient to the drag axis.
Well, sort of. I hadn't thought of doing it that way. The thing is, you have to keep track of its attach point, and if there are any winds, the the 'chute pulls the attach point parallel to the relative wind vector at that point. If you are landing in a crosswind, the controllability aspects are obvious. Also, the deploy/reefed/unreefed drag coefficients could be modeled and executed by the FCS, I think, as you mention. It bears some more thought. The same ideas that play into 'chute modeling play into master/child relationships that I have been toying with for some time (i.e. aircraft / water & fire retardent / food aid, etc. drops).
Jon
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