Lee Elliott wrote:
> Sent: Wednesday, September 15, 2004 10:16 PM
> To: FlightGear developers discussions
> Subject: [Flightgear-devel] Problem with ballistic sub-model
> Hello all,
> I'm trying to use a ballistic sub-model to simulate a bomb
> but the parent
> a/c's speed and pitch etc. doesn't seem to be inherited i.e.
> the bomb appears
> to have no initial velocity and the pitch doesn't match that
> of the a/c.
> The sub-model.xml I'm using is below. Some of the settings
> are for de-bugging
> i.e. <repeat>, <delay>, <count> and <buoyancy> but I figure
> the important
> ones for a bomb would be <speed> and <eda>
> <?xml version="1.0"?>
I've been doing the same work for droptanks for the Hunter, with the same
results. The ballistic submodel should inherit the parent velocities, and
unless I've got a sign wrong somewhere (very possible), it does. On the
other hand, the initial alignment of the submodel seems wrong. At the moment
it aligns to the initial vector. This is a feature not a bug :-). The
current module was designed for tracer and then extended to smoke, where it
doesn't matter so much.
I'll continue to investigate both issues today, but I can't promise instant
results, as I think we may be hitting some fundamental design concepts
rather than software bugs.
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