If there are any suggestions or requests for featured topics to be in
the second issue of the JSBSim newsletter, Back of the Envelope,
please let me know by the end of the week.
Jon
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On Fri, 11 Jun 2004 16:22:30 +0200
Erik Hofman [EMAIL PROTECTED] wrote:
Curtis L. Olson wrote:
Does anyone read enough polish to double check that everything these
guys are doing is within the spirit of the GPL?
http://www.allegro.pl/show_item.php?item=26723501
As far as I can decipher it
On Fri, 11 Jun 2004 09:14:43 -0500
Curtis L. Olson [EMAIL PROTECTED] wrote:
Does anyone read enough polish to double check that everything these
guys are doing is within the spirit of the GPL?
http://www.allegro.pl/show_item.php?item=26723501
They are our top web site referrer this month which
On Fri, 11 Jun 2004 16:54:56 +0200
Gunnstein Lye [EMAIL PROTECTED] wrote:
The GPL does not prohibit selling, and does not say anything about how much
they can charge, as long as any changes they have made are made available for
free (or the cost of the medium and postage).
True, that's why I
On Thu, 10 Jun 2004 21:03:52 +0200
Durk Talsma [EMAIL PROTECTED] wrote:
[JSBSim MD-11 Engine comments]
Durk:
Dave Culp can answer this more precisely if he's around, but for a
quick response let me tell you that we have recently made some changes
and fixes to the tank operation for JSBSim.
On Tue, 8 Jun 2004 12:44:33 -0400
Chris Metzler [EMAIL PROTECTED] wrote:
When the project was hosted at SF, there was a bug tracking system
there. Was it used? Would having a working BTS be a good thing,
I think a bug/feature request facility such as the one on the
SourceForge site is
I'm not an Apple guy, so I can't test this for sure, but can someone
tell me if it is still true that some Apple compilers that are used by
FlightGear developers still do not have this function:
inline char* gcvt (double value, int ndigits, char *buf)
??
Thanks,
Jon
For JSBSim (and I imagine, YASim, and others), our turbine model (for
example) features various temperatures that can be reported on a panel
display. For any unique aircraft, as well, there will be some
arbitrary number of engines, with controls associated with each
engine. In JSBSim, at
FWIW, Gimp has a script that creates text arcs that I have considered
using if I ever get a chance to make some instruments.
Jon
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Well, I got a note back from Cessna and (as I pretty much expected)
they were tight-lipped about supplying any aero/mass props data,
saying instead that the owner's manual was about all I could get.
After thinking about this some more, there are three possibilities I
can see for any perceived
On Thu, 20 May 2004 18:48:13 -0400
David Megginson [EMAIL PROTECTED] wrote:
I think you might have been onto something with the moments of inertia: our
current IXX, IYY, and IZZ apply to a Cessna 182, which is a heavier plane
than a 172, though with the same wing area and wingspan. Here are
On Wed, 19 May 2004 07:06:04 -0700
Andy Ross [EMAIL PROTECTED] wrote:
Vivian Meazza wrote:
Performance: max = 437mph at combat emergency power at 25000ft,
413mph at 15000ft, 395mph at 5000ft, cruising speed 362mph,
climb rate 3475 ft/min. Service ceiling 41,900ft.
I just ordered a copy of the
On Tue, 11 May 2004 17:09:57 +0100
Giles Robertson [EMAIL PROTECTED] wrote:
Thanks for telling me about a possible duplication of effort. I think
Concorde has to be done in JSBsim - I can't honestly see the YASIM
solver being able to cope with 6 elevons (and the quite complicated
relationship
On Fri, 7 May 2004 19:26:22 +0200
Durk Talsma [EMAIL PROTECTED] wrote:
Cool! Drop us a note, when you think you fixed it, and I'm sure Innis
and I are eager to compete for the next round of screenshots. :-)
Cheers,
Durk
Someone sent me an MD-11 FDM for JSBSim a couple of weeks ago. I
don't
On Fri, 7 May 2004 20:03:22 +0200
Durk Talsma [EMAIL PROTECTED] wrote:
Hi Jon,
That was me. The problem was that upon initialization the aircraft
tumbles
over and settles on the runway with a bang. Innis Cunningham
discovered that
we could solve the problem in part by moving the main gears
On Fri, 30 Apr 2004 13:57:03 +0100
David Luff [EMAIL PROTECTED] wrote:
The turbocharged piston engine is a completely different beast from a
turboprop though, I would imagine the latter has more in common with
the
turbine model. OTOH, the Piper Navajo is a GA twin that uses
turbocharged
piston
Roy Vegard Ovesen [EMAIL PROTECTED] wrote:
On Friday 30 April 2004 13:59, Jon Berndt wrote:
between where you are and where you want to be. This error term is
limited
to 100, filtered with a slight lag, and then multiplied by 0.1 in
order to
get a commanded HDOT (time derivative of altitude,
Andy Ross [EMAIL PROTECTED] wrote:
Erik Hofman wrote:
Why do you think that collision detection is not implemented? You
can crash to the ground and to the buildings (maybe even other
aircraft?), so there must be some logic behind this.
AFAIK all the FDMs share the same bug here.
it's a
On Wed, 28 Apr 2004 13:29:08 +0100
David Luff [EMAIL PROTECTED] wrote:
The tests compile and link with ../src/libopenal.a, so unless you've
hacked their build script or replaced that lib with Norman's then you'll
still belinking (the tests) against the original.
I'll have to adjust that. Has
On Wed, 28 Apr 2004 15:57:55 +0100
David Luff [EMAIL PROTECTED] wrote:
Norman, this compiles, links, and produces the expected sound from
FlightGear :-)
Many thanks for sorting this - I certainly couldn't have got it
working otherwise.
Cheers - Dave
This was all done under CygWin? Can someone
On Wed, 28 Apr 2004 16:00:20 +0100
David Luff [EMAIL PROTECTED] wrote:
On 4/28/04 at 9:04 AM Jon S Berndt wrote:
On Wed, 28 Apr 2004 13:29:08 +0100
David Luff [EMAIL PROTECTED] wrote:
For those using CygWin, it's fatal at the moment.
Norman's latest openal build fixes it :-)
You have
On Wed, 28 Apr 2004 12:12:20 -0400
Norman Vine [EMAIL PROTECTED] wrote:
Nor was I, but usually one can find a way to compile Windows
code with gcc but it often requires digging into the depths of the
gnu linker documentation and studying the x86 specific link options
for creating DLLs for WIN32.
On Tue, 27 Apr 2004 06:58:41 -0700
Andy Ross [EMAIL PROTECTED] wrote:
Many/most of the joysticks don't work for windows users. They
download the program, try it, and then complain when the view is
constantly spinning around. One presumes the axis mappings are
simply different between the
On Fri, 23 Apr 2004 17:43:59 +0200
Luca Masera [EMAIL PROTECTED] wrote:
Hi everyone,
about JSBBim: the airplane has three tanks, but the flight
model uses only the first. In other words, if I start FlightGear
with the first tank empty, the engine is off and doesn't
starts. This happens even
On Fri, 23 Apr 2004 19:03:15 +0200
Durk Talsma [EMAIL PROTECTED] wrote:
Hmm, I just played a bit with the main gears' position, moving them
backward
by just a bit, and right now, I have the situation where upon
initialization,
the aircraft tumbles over once and than settles with a bang on the
On Thu, 22 Apr 2004 13:52:03 -0400
Josh Babcock [EMAIL PROTECTED] wrote:
It would be nice to be able to turn on some sort of cursor in
FlightGear to show where the VRP and CG are. Maybe three lines
through the point and parallel to the axis of the model. I think it
would help aircraft design
On Thu, 22 Apr 2004 20:49:25 +0200
Durk Talsma [EMAIL PROTECTED] wrote:
Well, that's right. It happened in that order :-) When I first tried
loading the MD11, it appeared to initialize a few hundred feet above the
ground, and
Hmm. I think this would be the first thing to address. I don't
I went ahead and posted the update to the JSBSim web site last night.
The slide image buttons don't quite line up. When they do, the effect
will be quite nice, I believe. Anyhow, the only thing I can think of
that could be responsible at this time is that the images must be an
even number of
I figured it out. This works:
tr
tdA href=main.html target=MAIN
IMG
onmouseover=loadImage(this,sbA2);showStatus(alt);return true;
onmouseout=defaultStatus();loadImage(this,sbA1);
alt=JSBSim Home
src=menu_sep_home_1.jpg
border=0/A/td
/tr
tr
tdA
On Tue, 20 Apr 2004 14:07:28 +0100
Richard Bytheway [EMAIL PROTECTED] wrote:
Assuming that you are talking about HTML here...
Open the table with:
table cellpadding=0 borders=0 cellspacing=0
cellpadding is the space between adjacent cells
borders is the width of the border around each cell
On Tue, 20 Apr 2004 09:34:29 -0500
Curtis L. Olson [EMAIL PROTECTED] wrote:
Jon S Berndt wrote:
Done that. One thing that helped was to set the font size used in
teh
table to a small number. But, still, I can't get my cut images in the
cells with no borders and no padding to line up.
Browser
Richard Bytheway [EMAIL PROTECTED] wrote:
Some browsers get confused if you have CR/LF between elements.
Although they shouldn't render white space (except between words)
some do. Try putting the whole td.../td on one line in the HMTL
file.
Send me the table code if you want me to have a
On Mon, 19 Apr 2004 07:11:26 -0700
Andy Ross [EMAIL PROTECTED] wrote:
Jon S. Berndt wrote:
undefined reference to `___gxx_personality_v0'
undefined reference to `__Unwind_Resume'
...
Those are internal g++ things. It looks like you upgraded your
compiler without doing a full rebuild? Versions
Can anyone tell me if FlightGear has been successfully compiled and
linked using mingw?
Jon
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On Mon, 12 Apr 2004 11:45:48 -0400
Norman Vine [EMAIL PROTECTED] wrote:
Before Fred started providing MSVC compiled executables IIRC
the the only Win32 executables ever available for download from
flightgear.org were MingW compiled.
What problems are you experiencing ?
Norman
Nothing really. I
On Mon, 12 Apr 2004 19:06:27 +0200
[EMAIL PROTECTED] (Wolfram Kuss) wrote:
BTW, I had a look for a X15 3D model a short while ago. There is a
new
MSFS/CFS model, but it is not much better than the old one, so I
don't think it is worth it.
The one we have now doesn't seem too bad, but the skins
Where in the FlightGear code are command line options parsed?
Jon
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Does anyone know how to do escape sequences in a DOS console? I mean,
how do you tell the DOS command shell to BOLD or Underline or change
the color of text?
Jon
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On Thu, 08 Apr 2004 10:14:57 -0500
Jon S Berndt [EMAIL PROTECTED] wrote:
How does one get g++ under CygWin to use the mingw includes and
libraries instead of the nominally supplied ones (which, I think,
require the cygwin dll to execute).
Jon
http://www.delorie.com/howto/cygwin/mno-cygwin
How does one get g++ under CygWin to use the mingw includes and
libraries instead of the nominally supplied ones (which, I think,
require the cygwin dll to execute).
Jon
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On Thu, 08 Apr 2004 16:26:08 +0100
David Luff [EMAIL PROTECTED] wrote:
On 4/8/04 at 10:14 AM Jon S Berndt wrote:
How does one get g++ under CygWin to use the mingw includes and
libraries instead of the nominally supplied ones (which, I think,
require the cygwin dll to execute).
I *think
On Thu, 8 Apr 2004 19:27:50 +0200
Frederic Bouvier [EMAIL PROTECTED] wrote:
I guess that you should link with -lwsock32 ( or -lws2_32 if it
isn't working )
-Fred
That fixed it, thanks.
Jon
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I'm trying to build an application in gnu fortran (g77) but I end up
with these link errors:
/usr/bin/../lib/libg2c.a(fmtlib.o)(.text+0x57):fmtlib.c: undefined
reference to `__umoddi3'
/usr/bin/../lib/libg2c.a(fmtlib.o)(.text+0x79):fmtlib.c: undefined
reference to `__udivdi3'
Anyone selling
On Wed, 07 Apr 2004 12:21:12 -0700
Andy Ross [EMAIL PROTECTED] wrote:
Jon S. Berndt wrote:
I'm trying to build an application in gnu fortran (g77) but I end up
with these link errors:
undefined reference to `__umoddi3'
undefined reference to `__udivdi3'
Those look like the software math emulation
On Tue, 6 Apr 2004 14:05:38 -
Jim Wilson [EMAIL PROTECTED] wrote:
Jon Berndt said:
As opposed to? I suppose you could say everything I'm asking about
is visual,
since I'm neither a pilot nor an engineer :-) It would be nice to
eventually
have the compression values to pull off visual
On Tue, 06 Apr 2004 16:46:53 +0200
Erik Hofman [EMAIL PROTECTED] wrote:
Jon wrote:
We do have those values. I just never thought about publishing them.
What do you need? What does YASim provide? What would be best?
normalized compression would be great:
gear/gear[]/compression-norm
Erik
Now,
On Tue, 6 Apr 2004 11:41:43 -0400
Sonny Hammaker [EMAIL PROTECTED] wrote:
To Whom it May Concern, and to Whomever may be of assistance,
I'm working on modifying a jsbsim FDM to represent an RPV with
an autonomous autopilot. The autopilot and gnc systems are designed
in Simulink, and we're
On Tue, 06 Apr 2004 18:58:03 +0200
Erik Hofman [EMAIL PROTECTED] wrote:
JSBSim does basically the same (although there is a name allocated
for it), but the real question is: Is left most defined 0, or is
right mos define d0, or is it something completely different
(numbered in order of
On Tue, 06 Apr 2004 19:41:08 +0200
Erik Hofman [EMAIL PROTECTED] wrote:
/gear/nose
/gear/l_main
/gear/r_main
/gear/tail_skid
/gear/left_top
/gear/right_tip
The only change might be that YASim should allow for defining named
gear locations.
Erik
I don't know anything about how the 3D animation
On Tue, 6 Apr 2004 18:05:30 -
Jim Wilson [EMAIL PROTECTED] wrote:
Maybe adding the text description in the gear/gear[n] path (the NOSE,
L_MAIN,
R_MAIN, etc) might help someone trying to figure out which was which.
But of
course they could just look at the config file and count (e.g. R_MAIN
On Tue, 6 Apr 2004 14:42:48 -0400
Sonny Hammaker [EMAIL PROTECTED] wrote:
In the prop file prop_75in2f.xml what is the input column for the
Look up tables of C_THRUST, and C_POWER. The first column that is
thanks
This is a 75 inch diameter, 2 bladed, fixed-pitch propeller. The first
column
On Tue, 6 Apr 2004 19:16:18 -
Jim Wilson [EMAIL PROTECTED] wrote:
Erik Hofman said:
Your idea of simple is different then mine. Most of the time I know the
names I've given objects for 3d animations, I never seem to rememberthe
order in which I put them in the file ...
Yep. It just
On Tue, 06 Apr 2004 20:58:24 +0200
Erik Hofman [EMAIL PROTECTED] wrote:
Your idea of simple is different then mine. Most of the time I know
the names I've given objects for 3d animations, I never seem to
remember the order in which I put them in the file ...
Erik
So ... to get some closure
On Tue, 6 Apr 2004 16:47:42 -0400
Sonny Hammaker [EMAIL PROTECTED] wrote:
thanks for the tips. So you're suggesting that
I leave the J (advance ratio), and coefficients alone,
and just modify the Ixx and Diameter parameters accordingly?
DONE! Well, this kind of leads me back to the original
On Tue, 6 Apr 2004 17:16:01 -0400
Sonny Hammaker [EMAIL PROTECTED] wrote:
Some good thoughts again. Actually, I'm using a JSBSim flight model,
within flightgear, but interfacing it to my own autopilot inside of
Simulink. I might however switch over to the Flight Gear Autopilot,
and see what
On Tue, 6 Apr 2004 16:59:55 -0400
Sonny Hammaker [EMAIL PROTECTED] wrote:
I thought I read somewhere, that in Flight Gear, the CG of your
aircraft isn't specific to the aircraft itself, but rather related to
some sort of reference. Is this true? Or did I misinterpret
something? It also
On Mon, 5 Apr 2004 14:47:11 -
Jim Wilson [EMAIL PROTECTED] wrote:
What JSBSim does that YASim does not is if the aircraft is a little
too close
to the ground at initialization JSBSim hurls the thing up in the air.
Why is
it that only JSBSim reacts by flipping over the Cessna?
What does
On Mon, 5 Apr 2004 11:13:15 -0700 (PDT)
Tony Peden [EMAIL PROTECTED] wrote:
--- Jim Wilson [EMAIL PROTECTED] wrote:
But will we ever know why JSBSim needs to do flip over the 172? :-)
Bad data.
On the part of ... ?
Jon
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1) Is anyone aware of a database of the lunar surface exists that
FlightGear could use?
2) How difficult would it be to model other planetary bodies using
FlightGear (assuming the FDM had everything it needed)?
Jon
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On Mon, 5 Apr 2004 23:15:42 +0200
Mathias Frhlich [EMAIL PROTECTED] wrote:
The onground property is now ok.
You can reset now JSBSim aircraft.
Thanks for the fix!
??
Was it bad data?
Jon
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On Mon, 5 Apr 2004 23:04:16 -
Jim Wilson [EMAIL PROTECTED] wrote:
Jon S Berndt said:
??
Was it bad data?
I think, that maybe this could be resolved by doing as Andy described
earlier.
In other words know where the gear is and get it above the pavement
(ground
elevation) before
http://www.boeing.com/news/frontiers/archive/2002/may/ts_pw.html
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Two general application / programming / automation questions:
1) Image conversion
Is ayone aware of a program that does on-the-fly image conversion that
will run under Cygwin from the command line? Specifically, what I am
looking for is a program that will take a specified-resolution image
On Wed, 31 Mar 2004 16:06:26 -0800
Andy Ross [EMAIL PROTECTED] wrote:
You want the ImageMagick package. It comes with an amusingly named
convert program:
convert MyPhoto.pcd MyPhoto.png
This is best handled by the nc program (net cat), which I'm sure
must be available in cygwin. Doing nc -l
On Fri, 26 Mar 2004 16:02:09 +0100 (CET)
Ilja Moderau [EMAIL PROTECTED] wrote:
Hello everybody,
I created my first aircraft - Tupolev 154.
Screenshots:
http://mitglied.lycos.de/iljamod/tu154-1.jpg
http://mitglied.lycos.de/iljamod/tu154-2.jpg
You can download it under:
On Fri, 26 Mar 2004 16:57:34 +0100
Melchior FRANZ [EMAIL PROTECTED] wrote:
* Ilja Moderau -- Friday 26 March 2004 16:02:
I created my first aircraft - Tupolev 154.
Screenshots:
http://mitglied.lycos.de/iljamod/tu154-1.jpg
http://mitglied.lycos.de/iljamod/tu154-2.jpg
Really beautiful!
It really
On Fri, 26 Mar 2004 23:13:59 +0100
Oliver C. [EMAIL PROTECTED] wrote:
On Friday 26 March 2004 22:05, Curtis L. Olson wrote:
I have a bit of time this afternoon so I'm going to try to get the
official SimGear-0.3.5 and FlightGear-0.9.4 rolled out. I plan to
give the mirrors a day or two to catch
On Fri, 26 Mar 2004 23:47:27 +0100
Oliver C. [EMAIL PROTECTED] wrote:
Oooops, I wonder if we ever get the chance to do real testing before
a release.
I agree with that.
The pre release version 0.9.4.pre2 was released on March 23.2004.
This means that there were only 3 days time for testing
On Fri, 26 Mar 2004 17:28:12 -0600
Curtis L. Olson [EMAIL PROTECTED] wrote:
Martin Spott wrote:
Oooops, I wonder if we ever get the chance to do real testing before
a release. I'm very well aware that this is primarily Curt's project
I apologize if the schedule was a bit compressed, but I
On Thu, 25 Mar 2004 06:56:31 -0800
Andy Ross [EMAIL PROTECTED] wrote:
What exactly does hangaring mean as a FDM feature?
It's not exactly a tangible feature from a user perspective. It's
almost sort of a minor correction in the way we do things. Right now,
engines for JSBSim aircraft are
On Wed, 24 Mar 2004 17:28:48 -0600
Curtis L. Olson [EMAIL PROTECTED] wrote:
spend too much energy solving non-existant problems. If people want
to create ficticioius designs, that can be fun too.
Curt.
That could be a lot of fun. I'm working on OlsonAir, at the moment.
;-)
Jon
On Wed, 17 Mar 2004 09:05:03 -0500
David Megginson [EMAIL PROTECTED] wrote:
As a matter of fact, I'd suggest getting rid of the yasim,
jsbsim, etc. in aircraft names altogether. We have only a tiny
handful of aircraft (172, 310, etc.) supported by more than one FDM;
in those cases, let's just
On Wed, 17 Mar 2004 11:19:36 -0500
Josh Babcock [EMAIL PROTECTED] wrote:
PropertyList include=ncc1701d-set.xml
What I want to know is: where is the NCC-1701D !?
:-)
Jon
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On Wed, 17 Mar 2004 11:43:28 -0500
Josh Babcock [EMAIL PROTECTED] wrote:
Oh, they're out seeking new life forms. They'll be back in about
five years. Now JSBSim *does* support warp core engines, right?
sound of rapid keyboard clicking
I'm workin' on it! ;-)
Jon
On Tue, 16 Mar 2004 09:09:15 -0800 (PST)
Alex Perry [EMAIL PROTECTED] wrote:
From: Orthonormalize [EMAIL PROTECTED]
honestly have you ever tried building this thing from scratch?
Personally? Last week, on an AMD64 laptop that's running Debian's
Sarge.
The code downloaded and compiled from
On Fri, 12 Mar 2004 17:51:56 +
[EMAIL PROTECTED] wrote:
Today i updated my flightgear cvs directory and tried to rebuilt it.
But there was still this bug in FGEninge.cpp:
FGEngine.cpp:71: no matching function for call to
`basic_stringchar, string_char_traitschar,
As far as I can tell, there is no SimGear-devel list, so I'm asking
this here.
I'm probably going to toy with EasyXML for a C++ side project I'm
working on - and if that goes well, perhaps think about using it with
JSBSim as well. I am guessing that I ought to be able to grab the
EasyXML
On Mon, 01 Mar 2004 07:46:16 -0500
David Megginson [EMAIL PROTECTED] wrote:
Jon Berndt wrote:
If neither of the two (YASim and JSBSim) are appropriate for your
expectations, you can code a special flight model in C within LaRCSim
or perhaps set up a special model in UIUC-LaRCSim, although I am
On Fri, 20 Feb 2004 09:08:26 -0800 (PST)
Gopal Mor [EMAIL PROTECTED] wrote:
The error messages obtained during compilation are as
follow
FGEngine.cpp:71: no matching function for call to
`basic_stringchar, string_char_traitschar,
__default_alloc_templatetrue, 0 ::clear ()'
I think I have seen
On Wed, 18 Feb 2004 13:55:40 -0600
Curtis L. Olson [EMAIL PROTECTED] wrote:
Hi, quick announcement ... baby! Amelia Esther, 8lbs 1oz, born
6:12am this morning, less than 1 hour from first contraction to
delivery. 12 minutes from arrival at the hospital to delivery.
Everyone is doing good.
On Fri, 13 Feb 2004 07:07:05 -0800
Andy Ross [EMAIL PROTECTED] wrote:
Adding the VRP is yet another mechanism, basically a direct analog of
the view offset stuff on the FDM side. I just don't see the need. If
we decide the VRP is the right way to do it, we should chuck the view
offset stuff for
On Fri, 13 Feb 2004 11:15:19 -0600
Cameron Moore [EMAIL PROTECTED] wrote:
FWIW, Microsoft filed their patent on Dec. 1, 2000. The CVS entry
you reference was from Apr. 6, 2001. Can you beat the December date?
--
Cameron Moore
Probably.
Jon
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An interesting article:
http://news.osdir.com/article448.html
Jon
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On Fri, 13 Feb 2004 13:09:30 -0700
Russell Suter [EMAIL PROTECTED] wrote:
So then the pilot's eyepoint is relative to the dynamic CG? I guess
I just assumed JSBSim reported a position from a
fixed point on the aircraft. Ack! Would your VRP then become the
point from which the pilot's
On Fri, 13 Feb 2004 12:53:45 -0700
Russell Suter [EMAIL PROTECTED] wrote:
The VRP is a **solid** point of reference.
Yes, that is most likely different for each aircraft, No? Maybe I've
missed something here but as I understand it, the
VRP is an attempt to define a fixed point of reference in
On Fri, 13 Feb 2004 20:30:35 -
Jim Wilson [EMAIL PROTECTED] wrote:
Jon, I forget, what exactly is the reason for defining a VRP in the
config file? I thought that JSBSim already knew where the nose was.
We normally track:
- Initial empty weight CG
- Dynamic CG (includes fuel burnoff)
-
On Fri, 13 Feb 2004 20:30:35 -
Jim Wilson [EMAIL PROTECTED] wrote:
Jon, I forget, what exactly is the reason for defining a VRP in the
config file? I thought that JSBSim already knew where the nose was.
Also, Jim: will the view code be able to place a 3D model correctly no
matter what the
On Fri, 13 Feb 2004 21:25:42 -
Jim Wilson [EMAIL PROTECTED] wrote:
Jon S Berndt [EMAIL PROTECTED] said:
We normally track:
- Initial empty weight CG
- Dynamic CG (includes fuel burnoff)
- landing gear ground contact points
- scrape points
- pilot eyepoint (for calculating pilot accels
On Fri, 13 Feb 2004 14:33:43 -0700
Russell Suter [EMAIL PROTECTED] wrote:
Although I strongly agree that JSBSim reporting a fixed point
relative to the aircraft is good, I'm not
particularly thrilled with the point you have chosen. I am more than
happy to agree to disagree on that one though.
Any chance of modeling wingtip vortices (when CL is high enough above
some threshhold) and rocket engine exhaust?
:-)
Jon
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materiel and then use nasal to turn it on and
off. You can even make it get bigger and smaller with the
animations. Don't know how to do the smoke though. Also, those
little clouds that form over the wings at high lift would be cool
too.
Josh
Jon S Berndt wrote:
Any chance of modeling wingtip
On Fri, 13 Feb 2004 16:52:12 -0700
Russell Suter [EMAIL PROTECTED] wrote:
Well, Jon, I think you already know the answer to that question. The
You probably answered that several times, but I didn't catch it in
your email.
way you phrase it though implies that I somehow
believe that the
On Thu, 12 Feb 2004 19:50:48 -
Jim Wilson [EMAIL PROTECTED] wrote:
You actually want to be very exact about matching the model to the
FDM origin.
...
Jim (or someone ... *anyone*):
Could you summarize the argument taking place here? I seem to only be
getting parts of it - I guess I didn't
On Thu, 12 Feb 2004 15:09:15 -0500
David Megginson [EMAIL PROTECTED] wrote:
So, given that the aerodynamic centre of an aircraft can shift based
on loading and flight conditions, how can we report that from the FDM
back to the 3D model code? Is this something people worked out in a
previous
On Thu, 12 Feb 2004 15:35:59 -0500
David Megginson [EMAIL PROTECTED] wrote:
Jon S Berndt wrote:
I'm not sure I see how this helps -- the model code still doesn't
know where the CG is, so it still doesn't know where the centre of
rotation for the model should be.
This is precisely *why
On Thu, 12 Feb 2004 21:19:25 -
Vivian Meazza [EMAIL PROTECTED] wrote:
Jon S Berndt tells us
First, the aircraft - like any body - rotates about its CG
(according to the EOM) - not usually the same as the AC.
So put the (visual) model origin at or near the CofG - what's the
problem? Seems
Is anyone aware of a RAM disk utility or feature under Unix
(specifically, IRIX)? When running a simulation on IRIX we are
finding that the disk access is taking too much time at various phase
boundaries. It is thought that the use of a RAM disk might help.
Jon
On Tue, 10 Feb 2004 15:06:41 -0800
Andy Ross [EMAIL PROTECTED] wrote:
Norman Vine wrote:
Jon S. Berndt wrote:
It is thought that the use of a RAM disk might help.
On Windows I have found that increading disk cache size and / or
using memory mapped files is more productive then a DAM disk
My
On Wed, 4 Feb 2004 09:39:16 +0100
[EMAIL PROTECTED] (Gerhard Wesp) wrote:
Hello,
I'm looking for good resources on flight simulations. For the
aerodynamics and flight dynamics it seems that Stevens, Aircraft
Control and Simulation, is (one of) the standard references. Things which
Stevens
On Wed, 4 Feb 2004 21:39:23 -
Jim Wilson [EMAIL PROTECTED] wrote:
Curt fixed that today. It even works pretty well with the 747. With
the one
he commited, the gain is higher than what you have (Kp=1.0), a little
longer
intergration period (Ti=25.0) and the derivator is way down to almost
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