Re: [Flightgear-users] Does anyone know of an f16-specific autopilot?

2005-09-27 Thread Erik Hofman

Michael Matkovic wrote:


If there's an F16-specific autopilot for flightgear, could you please 
let me know where I could get it?
I've been using the generic autopilot without a great deal of success, 
obviously.
The work I am involved in requires a JSBSim aircraft like the F16. 
Unfortunately, YaSim doesn't provide the parameters required, although 
there is a YaSim aircraft (YF-23) that does have dedicated autopilot.


As the author of the (JSBSim based) F-16 model I can conform there is no 
F-16 specific autopilot implemented other than the base flight rules 
that apply to the F-16 model (flight characteristics related, not 
waypoint related).


Erik

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RE: [Flightgear-users] Does anyone know of an f16-specific autopilot?

2005-09-27 Thread Jon S. Berndt
 If there's an F16-specific autopilot for flightgear, could you
 please let me
 know where I could get it?
 I've been using the generic autopilot without a great deal of success,
 obviously.
 The work I am involved in requires a JSBSim aircraft like the F16.
 Unfortunately, YaSim doesn't provide the parameters required,
 although there
 is a YaSim aircraft (YF-23) that does have dedicated autopilot.

JSBSim flight control components were designed specifically to meet the
requirements of the Block 40 Digital Flight Control System. I'm not sure all
the items needed for the terrain following logic (LANTIRN) are there, but
the various autopilot modes ought to be possible. If you need lots of
flexibility over building blocks, etc., you might try the JSBSim flight
control components.

Do you have a specific F-16 need - a particular block number?

Jon


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Re: [Flightgear-users] Does anyone know of an f16-specific autopilot?

2005-09-27 Thread Gerard ROBIN
Le mardi 27 septembre 2005 à 15:04 +1000, Michael Matkovic a écrit :
 If there's an F16-specific autopilot for flightgear, could you please let me 
 know where I could get it?
 I've been using the generic autopilot without a great deal of success, 
 obviously.
 The work I am involved in requires a JSBSim aircraft like the F16. 
 Unfortunately, YaSim doesn't provide the parameters required, although there 
 is a YaSim aircraft (YF-23) that does have dedicated autopilot.
 
 thanks in advance...
 
 
 
I may indicate:
I have found an autopilot in a pre pre CVS FA-18 Model , which is very
good.
It solve some bad reactions on high speed Aircrafts. mainly with the
stand-alone JSBsim FDM F15 (from Erik)
Mathias being the Author could answer better than i can.

Cheers
-- 
Gerard


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Re: [Flightgear-users] Does anyone know of an f16-specific autopilot?

2005-09-27 Thread Andy Ross
Michael Matkovic wrote:
 If there's an F16-specific autopilot for flightgear, could you
 please let me know where I could get it?  I've been using the
 generic autopilot without a great deal of success, obviously.
 The work I am involved in requires a JSBSim aircraft like the
 F16.  Unfortunately, YaSim doesn't provide the parameters
 required, although there is a YaSim aircraft (YF-23) that does
 have dedicated autopilot.

What are the problems you are having with the generic autopilot?

There is nothing FDM-specific in the autopilot code.  The intent
is that it is a configurable engine for aircraft-specific
versions like the YF-23.  Have you tried simply using the YF-23
autopilot as-is on the F-16?

Or, for that matter, what are your requirements from YASim?  I
could see about hooking you up with specific outputs if they are
available.

Andy

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[Flightgear-users] terrasync

2005-09-27 Thread Edward Cawley
Now that I've solved my joystick problems (thanks to all how gave me  
input !) I'm working on scenery. Is the terrasync utility included in  
the 0.9.8 download or does it have to be downloaded separately? One  
of the documents mentioned a read me that came along with the  
utility. When I get it  how do I use it? I've downloaded 10  X 10  
scenery blocks, placed them in the terain folder in the data folder,  
but nothing happens when I get to the edge of the w130n30 block which  
was included in the download. Help.

Ed


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Re: [Flightgear-users] terrasync

2005-09-27 Thread Arthur Wiebe
In the FlightGear source folder you will find another folder called utils. Somewhere in there you'll find the terrasync readme.On 9/27/05, Edward Cawley
 [EMAIL PROTECTED] wrote:Now that I've solved my joystick problems (thanks to all how gave me
input !) I'm working on scenery. Is the terrasync utility included inthe 0.9.8 download or does it have to be downloaded separately? Oneof the documents mentioned a read me that came along with theutility. When I get ithow do I use it? I've downloaded 10X 10
scenery blocks, placed them in the terain folder in the data folder,but nothing happens when I get to the edge of the w130n30 block whichwas included in the download. Help.Ed___
Flightgear-users mailing listFlightgear-users@flightgear.orghttp://mail.flightgear.org/mailman/listinfo/flightgear-users
2f585eeea02e2c79d7b1d8c4963bae2d-- Arthur/- http://sourceforge.net/users/artooro/- 
http://artooro.blogspot.com
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Re: [Flightgear-users] terrasync

2005-09-27 Thread AJ MacLeod
On Tuesday 27 September 2005 18:39, Edward Cawley wrote:
I've downloaded 10  X 10
 scenery blocks, placed them in the terain folder in the data folder,
 but nothing happens when I get to the edge of the w130n30 block which
 was included in the download. Help.

Glad you managed to work around your joystick problem eventually!  Just 
checking - did you uncompress the files you downloaded?  They're gzipped tar 
files and need to be uncompressed and extracted before you can use the 
contents.

Shout again if you need more assistance in doing so.  Basically, once done you 
should have, in the data/Scenery/Terrain folder, several subfolders (note 
_not_ just the tgz files), one for each chunk you've downloaded.

Cheers,

AJ

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[Flightgear-users] Does anyone know of an f16-specific autopilot?

2005-09-27 Thread Michael Matkovic

Michael Matkovic wrote:

If there's an F16-specific autopilot for flightgear, could you
please let me know where I could get it?  I've been using the
generic autopilot without a great deal of success, obviously.
The work I am involved in requires a JSBSim aircraft like the
F16.  Unfortunately, YaSim doesn't provide the parameters
required, although there is a YaSim aircraft (YF-23) that does
have dedicated autopilot.



What are the problems you are having with the generic autopilot?



There is nothing FDM-specific in the autopilot code.  The intent
is that it is a configurable engine for aircraft-specific
versions like the YF-23.  Have you tried simply using the YF-23
autopilot as-is on the F-16?



Or, for that matter, what are your requirements from YASim?  I
could see about hooking you up with specific outputs if they are
available.



Andy





Hi Andy,

I wasn't aware that the autopilot used with the YF-23 could be
used with the F16. I'll give this a try and see how it goes.

The generic autopilot allows the F16 to go unstable very easily, for example
I set the altitude-hold for 5000 ft while its at 3000, and I get a pitch
oscillation which leads to an aircraft crash.
Extreme movements like a +30 degree pitch hold for a few seconds followed
by an altitude-hold will also result in pitch oscillation. The autopilot 
seems
to be too sensitive an doesn't have proper damping... as I have had 
suggested to

me, ie. I have little knowledge in control theory.


There are some internal properties that I need retrieved from JSBSim
which I couldn't find in YaSim. These are (looking in the 'internal 
properties)...


/fdm/jsbsim/atmosphere/rho-slugs_ft3
/fdm/jsbsim/velocities/vt-fps
/fdm/jsbsim/position/h-sl-ft
/fdm/jsbsim/atmosphere/T-sl-R
/fdm/jsbsim/atmosphere/T-R
/fdm/jsbsim/atmosphere/P-psf

Overall, JSBSim seems to give more data than YaSim, but I'm happy
to be corrected on this point.


Michael.



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[Flightgear-users] Does anyone know of an f16-specific autopilot?

2005-09-27 Thread Michael Matkovic

Le mardi 27 septembre 2005 à 15:04 +1000, Michael Matkovic a écrit :
If there's an F16-specific autopilot for flightgear, could you please let 
me know where I could get it?
I've been using the generic autopilot without a great deal of success, 
obviously.
The work I am involved in requires a JSBSim aircraft like the F16. 
Unfortunately, YaSim doesn't provide the parameters required, although 
there is a YaSim aircraft (YF-23) that does have dedicated autopilot.


thanks in advance...




I may indicate:
I have found an autopilot in a pre pre CVS FA-18 Model , which is very
good.
It solve some bad reactions on high speed Aircrafts. mainly with the
stand-alone JSBsim FDM F15 (from Erik)
Mathias being the Author could answer better than i can.



Cheers
--
Gerard



Hi Gerard,

I couldn't find the FA-18 autopilot you're referring to.
Could you please provide a URL to it?


thanks,
Michael.



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[Flightgear-users] Does anyone know of an f16-specific autopilot?

2005-09-27 Thread Michael Matkovic

If there's an F16-specific autopilot for flightgear, could you
please let me
know where I could get it?
I've been using the generic autopilot without a great deal of success,
obviously.
The work I am involved in requires a JSBSim aircraft like the F16.
Unfortunately, YaSim doesn't provide the parameters required,
although there
is a YaSim aircraft (YF-23) that does have dedicated autopilot.



JSBSim flight control components were designed specifically to meet the
requirements of the Block 40 Digital Flight Control System. I'm not sure 
all

the items needed for the terrain following logic (LANTIRN) are there, but
the various autopilot modes ought to be possible. If you need lots of
flexibility over building blocks, etc., you might try the JSBSim flight
control components.



Do you have a specific F-16 need - a particular block number?



Jon



Jon,

I have no preference to block number, I just need an autopilot which
will be more stable that the generic one I'm using.


Michael.



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