Thread: [Jsbsim-devel] some additionnal request (though, not necessary for JSBSim stand-alone)

Hello,
I am back, after a long period always from my real computing equipment.

I wish you, a great new year. I know , i am out of delay, it was some time ago 
:) .

The following requests, regards JSBsim version with FG, i guess that they 
won't be useful for JSBSim stand alone  ( i could be wrong ).

When revisiting some of  the old models from my hangar, i am wondering, why 
the Carrier processing is longer missing the real catapult feature.
Now a day the right catapult position is not taken in account within JSBSim, 
only the  <external_reactions>  is being used ( for instance the nice Dave 
models) , which i agree is the most important.

I did developed  a specific  process with a bunch of .xml code ( using the 
existing JSB FDM resources ) , which works (position calculation and automatic 
taxiing)  with the naval aircraft from my hangar( F4U-7 , F8-E, Fouga Zephyr, 
F6F-5 ....), that solution is not elegant (mainly my process which hold the 
aircraft on the right "cat-position",  before catapulting).

A better one, fully included in the FDM would be perfect, like it is existing 
with the hook.

An other request, the terrain detection, is longer missing, which makes with 
JSBSim, the earth,  without water  :(  .

I had included, that feature, to the models from my hangar,  and others ( 
c172p, with a patch, which was never agreed); which consist of a little add on 
Nasal script, which say if the terrain is solid or not, according to that 
"external" information we can manage the FDM contact points.
 That (temporary) feature is perfectly working, which at least makes the 
Aircraft sinking when on the water.

Won't it be nice to include such feature in the JSBSim code, i know, we are 
waiting for a more elaborated terrain processing  with gear reaction, however 
that could be a first step.

Thanks


PS: These two features are existing years ago with YASim, so this can be done.



-- 
Gérard

J'ai décidé d'être heureux parce que c'est bon pour la santé. 
Voltaire

> Hello,
> I am back, after a long period always from my real computing equipment.
> 
> I wish you, a great new year. I know , i am out of delay, it was some
> time ago
> :) .
> 
> The following requests, regards JSBsim version with FG, i guess that
> they
> won't be useful for JSBSim stand alone  ( i could be wrong ).


Hi, Gerard, and Happy New Year to you, as well.

I am a little bit confused about what you are asking. Is it that some
features had been added to JSBSim in FlightGear, and now they have been
overwritten by JSBSim from our CVS?

Or, were there some features in your aircraft models themselves, but those
features are no longer working?

Or, something else?

Jon

On Jeudi 21 Janvier 2010, Jon S. Berndt wrote:
> > Hello,
> > I am back, after a long period always from my real computing equipment.
> > 
> > I wish you, a great new year. I know , i am out of delay, it was some
> > time ago
> > 
> > :) .
> > 
> > The following requests, regards JSBsim version with FG, i guess that
> > they
> > won't be useful for JSBSim stand alone  ( i could be wrong ).
> 
> Hi, Gerard, and Happy New Year to you, as well.
> 
> I am a little bit confused about what you are asking. Is it that some
> features had been added to JSBSim in FlightGear, and now they have been
> overwritten by JSBSim from our CVS?
> 
> Or, were there some features in your aircraft models themselves, but those
> features are no longer working?
> 
> Or, something else?
> 
> Jon
> 
> 
>

Hello, Jon
No, there is nothing broken, my models are longer flying, but the periodically 
tuning due to JSBSim improvements. And that is right  :)

I only wanted to point out, some missing features regarding the Carrier 
capabilities and Water/Solid  detection.
Which are solved , at least for me, ( i am not sure that somebody else has 
tried to do it)  with a lot of not elegant tricks ( bunch of .xml files, Nasal, 
etc...).

We could worry that such features are solved, with a "model maker" specific 
process dedicated and customized per Model  , and not generic, being part of 
the FDM.

Cheers



-- 
Gérard

J'ai décidé d'être heureux parce que c'est bon pour la santé. 
Voltaire