On 22 Mar 2002 15:35:12 -0800
  Tony Peden <[EMAIL PROTECTED]> wrote:

>This commit also includes Jon's first cut at multi-fdm capability,
>essentially the ability to have two instances of JSBSim. One would be,
>say, the master aircraft while the other might be a bomb. The second
>instance would calculate its ballistic trajectory.

It's a WIP, so there is no real functionality, yet, other 
htan reading in multiple FDMs (I've tested the X-15 with a 
Mk-82 and that's *it*). My main concern at this point is 
to make sure that I don't break existing functionality. 
However, another note of warning: JSBSim in CVS is 
definitely in growth mode.

>Of course, this is Jon's work, so I'm sure he's thinking more along the
>lines of a B-52 and a certain rocket plane. :-)

Well, yes, but not so much. I really want an F-16 with 
racks of bombs, then to fly over various parts of 
Afghanistan's mountanous terrain to do target practice. 
;-) ;-)

There are other applications that I have in mind:

1) A jet fighter with missile - the missile having its own 
guidance routine for flyout to a target. This should be 
possible given our architecture. It would be neat if we 
can work out a communication scheme between some onboard 
targeting logic (and glass display, like the MFDs in an 
F-16) and a missile. The JSBSim FCS components should 
eventually have the capability to model this kind of 
guidance laws, too, I think - or a reasonable fascimile.

2) An Atlas (or Delta for you Boeing guys) launch vehicle, 
multi-stage.

3) A lunar module, which separates the ascent stage from 
the descent stage.

4) A B-52 that drops an X-15 (of course).

5) Space Shuttle?

The potential is definitely there. The hooks are already 
built into the code. Tony has even well-tested the 
approach I will be taking given that it is already used in 
the FGInitialConditions code.

This is not an announcement of the feature, because it 
isn't even half-coded. But it is in-work, for sure.

Jon

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