> With Catapult it is less a problem, with answering time
> delay, i mean it should work.
> Catapults features need only to know the "starting position"
> with a more or less value precision: a carrier with 20 km
> speed does 5.6 meter per second => 0.50 1/10 sec => 0.05 1/100 sec
>
> The heading won't be a difficulty, the heading of the
> carrier is not quickly moving.
>
I haven't done much with FG or JSBSim lately, but thought I'd add my $0.02
worth, since I'm working on this stuff on a 'real' simulator.
Not all carriers shoot off at the carrier's heading. Some US carriers
(sorry, I can't name names) are left of carrier heading, up to 8 degrees.
Some secondary cats (cats 3 and 4) are off even more. (I think they even
show some of that in Top Gun).
Plus, the force applied is in carrier axes (with the aforementioned offset),
not in aircraft body axes. The force must be translated into body axis so
that it tracks down the cat track. That way, if you are lined up poorly on
the cat, it straightens you out.
The carrier is most likely not going to be changing heading or speed during
a launch, but it should be accounted for. With a high-seas condition, the
boat is rock, roll, and heave a lot. Traps are REALLY difficult when the
seas are rough. They probably have to time a shot off a cat to coincide with
an up motion, so that you don't get shot into a wave.
Bill
-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
Flightgear-devel mailing list
Flightgear-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/flightgear-devel
