Re: [Flightgear-devel] msvc6-win32-0.7.9 (minus)

2002-01-24 Thread Jon Berndt
JSBSim stops after the QNAN's, and now YASim c172 seems unable to get speed to lift off ... Just one of those days ... ... only in MSVC ... Christian: are you seeing this, too? Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED]

Re: [Flightgear-devel] msvc6-win32-0.7.9 Ok

2002-01-26 Thread Jon Berndt
You can 'see' that it took some 2 minutes - 130.792 secs to be exact - before i got the engine rolling ... so that's some 1310 lines (@ 10 HZ) of csv that yield little ... One can be puzzled why the last column, very largely labeled engine[?].RPM starts at 1071.807 RPM, but over the next 10-15

Re: [Flightgear-devel] msvc6-win32-0.7.9 Ok

2002-01-26 Thread Jon Berndt
IMO, the logging options should be moved off to a separate file and no version of that file should be committed to base CVS. That way, no user will ever get logging when they don't want it and developers can set things up the way they like for *all* JSBSim aircraft. This is probably true, but

Re: [Flightgear-devel] msvc6-win32-0.7.9 Ok

2002-01-27 Thread Jon Berndt
JSBSim actually works very hard to simulate realistically and uses the processor; with logging turned on, it does significant disk I/O. If you're short of memory and having to swap, the extra disk load can crucify the performance of Windows to keep the application running. And we are

Re: [Flightgear-devel] Re: YASIM Options

2002-01-27 Thread Jon Berndt
It's really nice to play with it! I once watched a Harrier at an airshow. It didn't really look like it were difficult to fly. ;-) I assume that the real thing is stabilized by a computer, no? Otherwise we would read about crashed Harriers every day. Lifting off in fgfs is already a hairy One

Re: [Flightgear-devel] msvc6-win32-0.7.9 Ok

2002-01-27 Thread Jon Berndt
I've found that each %f format conversion is relatively expensive, and (under linux) many sprintf followed by a single write is much faster than a lot of successive fprintf. I'd assume that the C++ version has the same performance impact. Right now, FGOutput.cpp uses cout. We direct output to

Re: [Flightgear-devel] idea ... (?)

2002-03-09 Thread Jon Berndt
This sounds ideal! I vote that you submit it! :-) What are the code dependencies? SimGear? Jon I have a stand-alone real-time and off-line plotting tool written in C/C++ (tested in Cygwin/WinNT/Win2K Linux) that is meant to be used as a flight test engineer's station. It has just been

Re: [Flightgear-devel] UIUC models update

2002-03-10 Thread Jon Berndt
Where can I get the 3D models with .3ds format? or how can I translate them to .3ds? Is there anyone convert the model of the Pioneer UAV into the JSBSim format? This would be nice to have - that is, a small program to convert the format from one to ther other. Perhaps someday. It would be

RE: [Flightgear-devel] Hack for Virtual cockpit problem

2002-03-12 Thread Jon Berndt
, apply the euler pitch, and convert it to a rotation matrix it'll move more realistically: This might be helpful from the JSBSim site: http://jsbsim.sourceforge.net/quaternions.html Jon Jon Berndt Coordinator, JSBSim Project http://jsbsim.sf.net

RE: [Flightgear-devel] Error of building the newest CVS of JSBSim standalone

2002-03-13 Thread Jon Berndt
JSBSim in CVS is in an intermediate state. Note that you will have to define NOSIMGEAR to get things to compile correctly in Builder. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of ÕÅÐÛ Sent: Wednesday, March 13, 2002 7:28 PM To: [EMAIL PROTECTED]

RE: [Flightgear-devel] A modest request

2002-03-15 Thread Jon Berndt
Forget anything else you might think I want. I don't want that. I want the above interface. That is all I want. I no longer claim (publically) that this interface is better. I no longer claim that any other interfaces are wrong. I just want them, OK? Thank you for playing nice. :-) I

RE: [Flightgear-devel] A modest request

2002-03-15 Thread Jon Berndt
You know, the code to do both what you want and what Andy wants is already done and like Norman said, has been in place for about a year now. Holy! ... Man, you guys are *fast*. I guess I missed that somewhere along the way in months past. Or, it could be that we got the gear to be good

RE: [Flightgear-devel] ARGGHHH !

2002-03-15 Thread Jon Berndt
You have a chicken-and-egg bug here: The tire contact point is *defined* as the intersection of the gear compression vector with the ground. You can't possibly ask for the elevation beneath it until you know it. Going back to the same diagram, the point of the wheel is the result of the

RE: [Flightgear-devel] new_hitlist

2002-03-17 Thread Jon Berndt
Erik Hofman writes: I'm realy impressed by the effect of the code. The higher I get, the higher the framerate! This makes me believe we could actually enlarge the view range when getting at a higher altitude. This would be really nice for very high flying (X) aircraft. Jon

RE: [Flightgear-devel] engine sounds with UIUC models

2002-03-17 Thread Jon Berndt
On Behalf Of Jim Wilson Sent: Friday, March 15, 2002 7:38 PM Oh yes, in fact I'm interested in the same promised release. We used formerly watcom's powerbuilder where I work for some billing and accounting stuff and it is great. We've got one power user/self taught programmer that does all

RE: [Flightgear-devel] ARGGHHH !

2002-03-17 Thread Jon Berndt
This is where we disagree -- keeping it in makes the code much harder for new (and existing) contributors to read and understand, gives false hits when searching for variables and method calls, etc. etc. With CVS, it's trivially easy to look at or restore old code later if we need to; I'm

RE: [Flightgear-devel] Help with XML and preferences.xml

2002-03-17 Thread Jon Berndt
Some of the other XML files are rather easy to figure out (i.e,. keyboard. xml), but others are not (i.e., the FDM specific files). Does anyone have anything written that describes these? The materials.xml file has quite a nice description at the top. Can you let us know what is unclear in

RE: [Flightgear-devel] Getting settled in my new home / Mars Scenery

2002-03-17 Thread Jon Berndt
One of the main goals we would like to work on is Martian terrain. I'm not sure how much of the Earth's parameters are hard coded, but I'm imagining it shouldn't be TOO difficult to produce Mars scenery for the sim. I have done it a little bit with MS's Flight Sim, and the initial results

RE: [Flightgear-devel] Inlined code harmful?

2002-03-17 Thread Jon Berndt
I had been concerned that SGPropertyNode::getDoubleValue was showing up at the top of the profiling output for JSBSim, but I think that that was masking the object methods it was invoking in other JSBSim code. Could very well be. properties, but not much for anything else. The biggest

RE: [Flightgear-devel] inlining

2002-03-20 Thread Jon Berndt
nhv@SFDEV3::/src/FlightGear% time ./bootstrap.sh .. real19m42.347s user17m30.419s sys 2m18.101s So it looks like 20 minutes is a reality on somewhat 'modest' machines And Cygwin is a slow poke :-) FWIW_2 with above tricks for optimized YASIM build times

RE: [Flightgear-devel] c310 lawn dart

2002-03-20 Thread Jon Berndt
What was the RPM reading? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jim Wilson Sent: Wednesday, March 20, 2002 10:44 PM To: [EMAIL PROTECTED] Subject: [Flightgear-devel] c310 lawn dart With the newly accessible JSBSim properties I was able

RE: [Flightgear-devel] Flaps not working in JSBSim

2002-03-21 Thread Jon Berndt
Is this with the most recent JSBSim? Tony made some changes related to properties and perhaps there is some tweaking to do. Jon -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Martin Spott Sent: Thursday, March 21, 2002 5:30 AM To: [EMAIL

RE: [Flightgear-devel] New SimGear does not Build Under MSVC 6.0

2002-03-21 Thread Jon Berndt
The only way I can get SimGear to build is to replace SG_USING_STD(sort); with SG_USING_NAMESPACE(std); Nothing else seems to work. I have tried cleaning and rebuilding from scratch *multiple* times. Are there any other stdlib function calls in there from std namespace? Jon

RE: [Flightgear-devel] JSBSim Inlining

2002-03-23 Thread Jon Berndt
The other possibility is that the new multi-FDM stubs are slowing things down, but that seems unlikely. There's very little there that's being used - and nothing being used unless it's defined in the config file as a multi-body sim. Jon ___

RE: [Flightgear-devel] JSBSim Inlining

2002-03-23 Thread Jon Berndt
How about compile time? I've been meaning to bug you about this. :) The new version of FGState.cpp, as checked in a few days ago, takes five (!) minutes to build on my machine. Yikes. The whole of JSBSim is running well over 15 minutes of compile time now. Turning off optimization, or

RE: [Flightgear-devel] JSBSim Inlining

2002-03-23 Thread Jon Berndt
Try the version in FlightGear, not the standalone one. I think my theory about you guys having optimization disabled is sounding more correct. The one that gets built out of FlightGear's CVS uses the standard -O2 flag, and is dog slow. OK, I ran a test using the -O2 setting just to see

RE: [Flightgear-devel] JSBSim Inlining

2002-03-23 Thread Jon Berndt
I have to back off of the 15 minutes I quoted earlier -- that was running over NFS, and with other stuff hammering on the same drive. Still, it's quite clear that inlining is our problem here. The difference between inlined-but-optimized code and completely unoptimized code is only 13%,

RE: [Flightgear-devel] JSBSim Inlining

2002-03-23 Thread Jon Berndt
Tony - Did you come up with any recommendations on what we should do with inlining given your test results? Not really, I was just after trying to find out how much inlining is worth to us. It did look like we might benefit from un-inlining some of the tied methods, though I have

RE: [Flightgear-devel] Problems Building JSBSim using MSVC 6.0

2002-03-24 Thread Jon Berndt
Compiling... FGAerodynamics.cpp c:\src\flightgear\src\fdm\jsbsim\fgaerodynamics.cpp(229) : error C2661: 'Tie' : no overloaded function takes 4 parameters Adding an ugly cast fixes the problem: PropertyManager-Tie(forces/fbx-aero-lbs, this,1, (double (FGAerodynamics::*)(int) const)

RE: [Flightgear-devel] Problems Building JSBSim using MSVC 6.0

2002-03-24 Thread Jon Berndt
Adding an ugly cast fixes the problem: PropertyManager-Tie(forces/fbx-aero-lbs, this,1, (double (FGAerodynamics::*)(int) const) FGAerodynamics::GetForces); I'll roll that change into my copy until it gets made permanently. While We'll do a little investigating, first. I want to

RE: [Flightgear-devel] Problems Building JSBSim using MSVC 6.0

2002-03-24 Thread Jon Berndt
from: [EMAIL PROTECTED] You aren't at Flight Dynamics division, are you? error. Does specifying '--pedantic' on the gcc command line cause any other warnings? Jonathan Polley If I try using the --pedantic option I get this: --- start -- g++ -I../ --pedantic -Wall

RE: [Flightgear-devel] Viewer Improvements and 3D cockpit (and note to Alex Perry)

2002-03-25 Thread Jon Berndt
Any chance someone could post a screen shot??? Jon [mailto:[EMAIL PROTECTED]]On Behalf Of David Megginson I've just checked in Jim's latest viewer improvements and I encourage everyone to update the main source tree and the base package, then try fgfs --aircraft=c172-3d

RE: [Flightgear-devel] Problems Building JSBSim using MSVC 6.0

2002-03-25 Thread Jon Berndt
Assuming Jon does not object, I will accept patches that look like the above. Okay, I'll make the changes to the current JSBSim cvs snapshot (not the one in FlightGear) and send you the patches. However I might try a typedef instead of a macro. I'm not quite ready to not object. Give

RE: [Flightgear-devel] Problems Building JSBSim using MSVC 6.0

2002-03-25 Thread Jon Berndt
Behalf Of Norman VineSent: Sunday, March 24, 2002 10:55 PMTo: [EMAIL PROTECTED]Subject: RE: [Flightgear-devel] Problems Building JSBSim using MSVC 6.0 FGFilter.cpp: In method `void FGFilter::Debug(int)':FGFilter.cpp:224: warning: use proper indentationFGFilter.cpp:224: warning: you

[Flightgear-devel] RRRRrrrrrrg!

2002-03-25 Thread Jon Berndt
I tried building FlightGear for the first time in months and months and found that I failed at the metakit not found error with simgear. Aaarrghh! Metakit?! So much for a quick and easy build. So, I read the README.metakit. Eventually I'll find time to look into this new (to me) process, but

RE: [Flightgear-devel] RRRRrrrrrrg!

2002-03-25 Thread Jon Berndt
I hear there's Windows binaries on the FGFS website 8-) I may try and build it, anyhow. Would it make things easier, long term, if the JSBSim core were to migrate into a shared library that is used by both the FGFS binary and the standalone JSBSim binary ? Could be. But right now the

RE: [Flightgear-devel] RRRRrrrrrrg!

2002-03-25 Thread Jon Berndt
So, I read the README.metakit. Eventually I'll find time to look into this new (to me) process, but until that time: can any CygWin users tell me if there are any roadblocks to building this successfully - any gotchas you have found? Never mind. It was a total piece of cake. Jon

[Flightgear-devel] [OT] OpenGL Billiards

2002-03-30 Thread Jon Berndt
I saw this on OpenGL.org: http://www.billardgl.de/index-en.html It is an astoundingly real looking billiards game. Lots of fun. Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel

RE: [Flightgear-devel] Feature Request

2002-03-31 Thread Jon Berndt
Could we please add a feature for the next release that allows FGFS to find the location of every person on earth and then render that on the scenery? Thanks, David I think Norman already has a Python script to do this. :-/ ___

RE: [Flightgear-devel] JSBSim compile error

2002-04-01 Thread Jon Berndt
make[4]: Entering directory `/home/david/flightgear/FlightGear/src/FDM/JSBSim' c++ -DFGFS -I../../.. -I../../../src -I/usr/local/include - -I/usr/X11R6/include -g -O2 -D_REENTRANT -c JSBSim.cpp JSBSim.cpp: In method `bool FGJSBsim::copy_from_JSBsim()': JSBSim.cpp:530: no matching function

RE: [Flightgear-devel] How to download LaRCsim?

2002-04-01 Thread Jon Berndt
It comes with FlightGear. Go to this page and read up on how to get the code via anonymous CVS: http://flightgear.sourceforge.net/cvsResources/anoncvs.html Jon -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Julius Sent: Monday, April 01, 2002

RE: Re: [Flightgear-devel] JSBSim Body Axes question

2002-04-01 Thread Jon Berndt
The definition of a positive aileron deflection is when the right-hand aileron deflects according to the right hand rule - that is, trailing edge down (TED). Unfortunately, this results in a negative roll rate - it would be nice if our choice of coordinate system caused a positive aileron

RE: [Flightgear-devel] CTRL+U and JSBsim

2002-04-03 Thread Jon Berndt
like this feature too. The current deal where the aircraft freezes on crashes is not so handy to me. Why not have some sort of realism feature that at one extreme does not freeze on crashes and allows for some sort of slew to altitude feature and then on the other extreme you've got to

RE: [Flightgear-devel] YASIM/Viewer mismatch

2002-04-03 Thread Jon Berndt
Ack, really? I was honestly under the impression that you were handing out the coordinate frame too; I thought I had checked this in code when writing YASim. Perhaps this is related to the misunderstanding of our gear model and how we determined where we were? Why c.g.? Since it moves, it

RE: [Flightgear-devel] CTRL+U and JSBsim

2002-04-03 Thread Jon Berndt
Curt hits the nail on the head --- I'd just like to continue on, and I ... crashes. Yes, I could restart, but it would be easier to plow along with We'll be glad to honor any sane request ... Recommendations? Jon ___ Flightgear-devel mailing

RE: [Flightgear-devel] CTRL+U and JSBsim

2002-04-03 Thread Jon Berndt
We'll be glad to honor any sane request ... Recommendations? ..ignore planet Earth? Spool the movie back? Autofire big recoilless tunnel-maker gun? Someone's been in the cold too long. ;-) Jon ___ Flightgear-devel mailing list [EMAIL

RE: [Flightgear-devel] My First Flight

2002-04-06 Thread Jon Berndt
Wow. Thanks for the feedback. This is really the only _best_ way to making sure the feel of the flight modeling is right - getting the qualitative reports from many people is even better. P-Factor is definitely one of those effects we need to adjust based on the qualitative judgment of people

RE: [Flightgear-devel] My First Flight

2002-04-07 Thread Jon Berndt
Give it another chance or four. You'll begin to enjoy it. If you've got vertigo or motion sickness problems, a Drammamine tab probably wouldn't hurt before you take off. I've been really lucky this way. When I was taking lessons some twenty years ago one thing the instructor did was to put

RE: [Flightgear-devel] RE: My First Flight

2002-04-08 Thread Jon Berndt
approach. She then said '...and this is how we slow down in a hurry'. Adjusting the prop RPM lever and throttle to get us from 145 knots to 80 in around 4 seconds. Very impressive! Is this modelled in FGFS? It *should* be, however we have a possible reported a bug in our propeller model

RE: [Flightgear-devel] Problem: JSBSim left roll and yaw

2002-04-08 Thread Jon Berndt
You might check the property tree for any rudder or aileron biases. In other words, the cmd is zero and the pos is not. Tony, are you seeing the roll? smime.p7s Description: application/pkcs7-signature

RE: [Flightgear-devel] fuel measure

2002-04-08 Thread Jon Berndt
We use pounds. Jon Jon S. Berndt Coordinator, JSBSim Project http://jsbsim.sf.net Curtis L. Olson writes: What units are we measuring fuel quantity in these days? If not gallons, can someone give me a rough conversion from what we are using to gallons (ignoring issues such as

RE: [Flightgear-devel] fuel measure

2002-04-08 Thread Jon Berndt
The property system currently publishes the value using US gallons, but think that almost everyone agrees that using a volume measurement is wrong, since volume is relative to temperature and air pressure. For the big iron, yes, but for small piston planes I personally think volume is

RE: [Flightgear-devel] [OT] Jon!

2002-04-08 Thread Jon Berndt
Try searching the nasa tech reports sites: http://techreports.larc.nasa.gov -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Gene Buckle Sent: Monday, April 08, 2002 11:18 AM To: [EMAIL PROTECTED] Subject: [Flightgear-devel] [OT] Jon! Jon, I'm

[Flightgear-devel] Error while linking fgfs

2002-04-08 Thread Jon Berndt
Got this error while linking latest flightgear from CVS: fg_init.o(.text+0x4c57):fg_init.cxx: undefined reference to `FGJSBsim::FGJSBsim(double)' Anyone else see this? I'm going to have a look now (I'm home today). Jon smime.p7s Description: application/pkcs7-signature

RE: [Flightgear-devel] Wheel array question

2002-04-08 Thread Jon Berndt
Right now our wheels are stored in an array. Is there anywhere that defines which position corresponds to which wheel ... something along the lines of: wheel[0] == nose wheel[1] == left wheel[2] == right from JSBSIm.cxx: FCS-SetLBrake( globals-get_controls()-get_brake( 0 ) );

RE: [Flightgear-devel] Error while linking fgfs

2002-04-08 Thread Jon Berndt
MAJOR FRUSTRATION MODE: I did a complete checkout and rebuild of FlightGear. Again, it gets all through compile and fails at the link stage. This is with a clean CVS checkout. fg_init.o(.text+0x4c57):fg_init.cxx: undefined reference to `FGJSBsim::FGJSBsim(double)' Is no one else seeing this?

RE: [Flightgear-devel] Error while linking fgfs

2002-04-08 Thread Jon Berndt
Never mind. Seemed to work after I did: 1) Deletion of flightgear tree 2) recheck out 3) Surprise! JSBSim.[c|h]xx no longer in fgfs cvs! (??) 4) aclocal;autoconf;etc. 5) make Jon -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jon Berndt Sent

RE: [Flightgear-devel] Wheel array question

2002-04-08 Thread Jon Berndt
from JSBSIm.cxx: FCS-SetLBrake( globals-get_controls()-get_brake( 0 ) ); //left FCS-SetRBrake( globals-get_controls()-get_brake( 1 ) ); //right FCS-SetCBrake( globals-get_controls()-get_brake( 2 ) ); // center -- Do aircraft really have nose wheel brakes? Most

RE: [Flightgear-devel] Wheel array question

2002-04-08 Thread Jon Berndt
Jon mentioned something about using the glass displays for a possible app? The program now has both file-based and command line initialization so it's a bit more user friendly and the linux build is clean once the library fonts are installed. And there is a short tutorial and install doc.

[Flightgear-devel] shuttle liftoff

2002-04-08 Thread Jon Berndt
If you are near a TV ... the shuttle goes up momentarily. Jon smime.p7s Description: application/pkcs7-signature

RE: [Flightgear-devel] Wheel array question

2002-04-08 Thread Jon Berndt
Commercial or open source? Regards John W. Very early stage demonstration of displays. We might have need for something quick and dirty. This is all speculative. Might never pan out, but I am trying to get my superiors interested for use as a tool for potential future work. Jon smime.p7s

RE: [Flightgear-devel] MSVC Still not Building

2002-04-08 Thread Jon Berndt
These items should not be limited, anyhow. Where is this done??? -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jonathan PolleySent: Monday, April 08, 2002 9:24 PMTo: [EMAIL PROTECTED]Subject: [Flightgear-devel] MSVC Still not

RE: [Flightgear-devel] Translate linear model of Pioneer UAV to JSBSim?

2002-04-08 Thread Jon Berndt
Why not translate nonlinear model of Pioneer to JSBSim? Why not? http://amber.aae.uiuc.edu/~jscott/sis/models/ The data is all there. In fact, the model files the UIUC guys use present pretty much the same information that JSBSim does. Perhaps someone could write a translator? :-) I notice

RE: [Flightgear-devel] EAA Wright Flyer

2002-04-09 Thread Jon Berndt
I wonder if the EAA would be willing to share their research data with the rest of us? Any EAA members here? IIRC it's not the EAA that's sponsoring the research. I think the model was tested extensively in the wind tunel at Langley. http://quest.arc.nasa.gov/aero/wright/tunnels/ I am

RE: [Flightgear-devel] problem with file Engine/prop_75in2f.xml

2002-04-11 Thread Jon Berndt
Sorry about that. I've got to find a darned editor that doesn't do that to me. I'm guilty! Jon -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Frederic Bouvier Sent: Thursday, April 11, 2002 6:03 AM To: FlightGear Development Subject:

RE: [Flightgear-devel] UIUC planes below runway (current CVS)

2002-04-11 Thread Jon Berndt
The convention for moving models for flight simulation visual system is for the origin to be at the CG location for aircraft models. The The *initial* CG location? The CG location can change. Jon smime.p7s Description: application/pkcs7-signature

RE: [Flightgear-devel] YASim C172 idle

2002-04-14 Thread Jon Berndt
To be fair, however, what many people call unflyable around here isn't anywhere near the case. The most recent JSBSim complaint, for example, only took two clicks of keyboard aileron to correct at climbout speeds. I was talking to a pilot friend of mine the other day. He was telling me that

RE: [Flightgear-devel] PA-28-161

2002-04-15 Thread Jon Berndt
The manual contains performance charts, detailed wb breakdown and subsystem descriptions among other things. I hope I can be of help to get this plane into FlightGear. What I need is a postal address to mail the manual to, if anyone is interrested in Let me know if this is of interrest.

RE: [Flightgear-devel] VBlank syncing

2002-04-15 Thread Jon Berndt
Setting the environment variable __GL_SYNC_TO_VBLANK to a non-zero value will force glXSwapBuffers to sync to your monitor's vertical refresh rate (perform a swap only during the vertical blanking period) on GeForce or newer hardware (ie: everything but TNT/TNT2 products). For windows

RE: [Flightgear-devel] Coordinate Systems

2002-04-17 Thread Jon Berndt
Can you describe your matrix? Is this of any use to you?: http://jsbsim.sourceforge.net/quaternions.html If someone shows me how to use my matrix directly, I'll do that. For now I've written a conversion function that I'll probably stick into my matrix class. smime.p7s Description:

RE: [Flightgear-devel] Propellor graphics

2002-04-18 Thread Jon Berndt
I agree that this was how it was originally coded, but something has changed in the last week or so and the propellor definitely spins an order of magnitude slower than reported rpm. Did someone get rps and rpm mixed up?? ;-) smime.p7s Description: application/pkcs7-signature

RE: [Flightgear-devel] 'Problems' in yesterday CVS

2002-04-18 Thread Jon Berndt
3. Flaps in c172JSBsim still doesn't animate. JSBSim isn't reporting the flap position -- it's a JSBSim-specific bug (you should still see the flaps move with YASim). Bug? This would surprise me as the aero effects are there. Could be that we just haven't gotten around to providing a

RE: [Flightgear-devel] latest cvs changes

2002-04-19 Thread Jon Berndt
On Behalf Of Cameron Moore What exactly do we want 1.0 to be? Here are some things I'd like to see in 1.0: - Runway lighting - Sane gear model in JSBSim In work, as we speak. Of course, this has been in work for months, and is likely to continue to be for at least days if not weeks. -

RE: [Flightgear-devel] 3d Cessna 310 u3a

2002-04-25 Thread Jon Berndt
Wow. This is lookin' good. I surmise the extra reference points close up will give a new perspective on flying the -310. For screen shots - if you don't mind my showing off a bit ;-) Show off more. This is very inspiring. It's great PR, too. Night time -

RE: [Flightgear-devel] 3d Cessna 310 u3a

2002-04-25 Thread Jon Berndt
Do you think - just for grins - it might be worth making a post to the rec.aviation.simulation newsgroup (land of MSFS and X-Plane talk)? Jon For screen shots - if you don't mind my showing off a bit ;-) Night time - http://www.spiderbark.com/fgfs/u3anight.png smime.p7s Description:

RE: [Flightgear-devel] Re: ..why C++ and not C?

2002-04-27 Thread Jon Berndt
Norman Vine wrote: Jonathan Polley writes: The biggest problem I see with C++ and the FAA is that it is VERY hard to guarantee that C++ will not do any dynamic memory allocation. Agreed -- this is the 'crux' of the issue for long running 'critical' software. AFAIK most of this kind of

RE: [Flightgear-devel] View Oddity Between MagicCarpet and JSBSim

2002-04-27 Thread Jon Berndt
Curtis L. Olson writes: What we have been referring to as the CG is a bit of misnomer. We really want the FDM to produce the location of a *fixed* reference point of the aircraft (in world coordinates). The FAA TCDS's call this the reference datum. We might as well adapt the same

[Flightgear-devel] Compile farm

2002-04-29 Thread Jon Berndt
In order to test JSBSim compilation across different platforms, I've been giving some initial thought to use of the sourceforge compile farm. Does anyone here have any experience with that? Good idea? No? Jon smime.p7s Description: application/pkcs7-signature

RE: [Flightgear-devel] Compile farm

2002-04-29 Thread Jon Berndt
In order to test JSBSim compilation across different platforms, I've been giving some initial thought to use of the sourceforge compile farm. Does anyone here have any experience with that? Good idea? No? This *is* cool. I tried it: tried compiling JSBSim on the Mac. uname -a returns: Darwin

RE: [Flightgear-devel] Trees, alpha, and the sky

2002-04-30 Thread Jon Berndt
Jon Berndt writes: can you use a sphere? That's a lot of triangles for each tree. Oh, blast it! That's right. OGL has no real sphere. Jon smime.p7s Description: application/pkcs7-signature

RE: [Flightgear-devel] JSBSim Build Problem Under MSVC

2002-04-30 Thread Jon Berndt
I'd prefer to get away from using _snprintf, snprintf, or whatever. The only reason we use them (IIRC) is to limit the length of an output string. This can be done in other ways, such as using the string class. Since they would not be used in performance critical areas, maybe that's an option?

RE: [Flightgear-devel] Propeller animation speed fix

2002-05-02 Thread Jon Berndt
So, is dt recording elapse time or set to the current step time? If a sharp programmer like Andy is getting confused about what dt really is, then perhaps the variable should be called ms_elapsed or t_stepsize, etc.? This is ridiculous. dt is short for delta T. In a 100 Hz simulation, the

RE: [Flightgear-devel] Propeller animation speed fix

2002-05-02 Thread Jon Berndt
This is ridiculous. dt is short for delta T. In a 100 Hz simulation, the corresponding dt is 0.04. For 120 Hz it's 0.00833. For people that do simulation for a living this is one of the *most* recognized parameters around. Jon almost assuredly meant dt = .01 for 100 Hz or dt = .04 for

RE: [Flightgear-devel] Propeller animation speed fix

2002-05-03 Thread Jon Berndt
? I don't see any harm in sticking with the integer value, but I agree that a better name, proper documentation, and some debugging is essential. This is true - particularly about documentation. Inline comments would help, too. I prefer (and we will continue to do this for JSBSim) that dt

RE: [Flightgear-devel] FDMs and external atmosphere

2002-05-15 Thread Jon Berndt
Are there any plans for adding support for the interesting bits of weather to this model? (ie, storms, realistic winds that actually relate to the rest of the weather model, etc) Yes. We've got hooks in JSBSim to add in the effects of turbulence, but the math model driver for turbulence can

RE: [Flightgear-devel] Latest Update Problems

2002-05-15 Thread Jon Berndt
Jonathan Polley writes: I noticed that the latest version of main.cxx references a macro SG_COMPILER_STR, which doesn't seem to be defined anywhere. Is this suppose to be referencing SG_COMPILER from simgear/compiler.h? Ooops, my fault, missed committing a change. It should all be

RE: [Flightgear-devel] Latest Update Problems

2002-05-15 Thread Jon Berndt
Never mind. I need to start waiting two minutes later than I normally would to send emails complaining of faults. That's how long it usually takes me between the time I think of writing until I find where I screwed up. :-/ Jon smime.p7s Description: application/pkcs7-signature

RE: [Flightgear-devel] Rudder inverted again in yasim

2002-05-28 Thread Jon Berndt
I agree -- JSBSim is reporting a positive normalized position for a negative input (and vice-versa). Obviously, we've made allowances for that in the model animations, but it's inconsistent with the behaviour elsewhere. I'll look into fixing it. Before making changes, can you elaborate on

RE: [Flightgear-devel] Rudder inverted again in yasim

2002-05-28 Thread Jon Berndt
No elaboration needed. Thanks David. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jon Berndt Sent: Tuesday, May 28, 2002 6:38 AM To: [EMAIL PROTECTED] Subject: RE: [Flightgear-devel] Rudder inverted again in yasim I agree -- JSBSim

RE: [Flightgear-devel] Rudder inverted again in yasim

2002-05-28 Thread Jon Berndt
: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of David Megginson Sent: Tuesday, May 28, 2002 7:14 AM To: [EMAIL PROTECTED] Subject: RE: [Flightgear-devel] Rudder inverted again in yasim Jon Berndt writes: I agree -- JSBSim is reporting a positive normalized position

RE: [Flightgear-devel] Missing Model Problem

2002-05-30 Thread Jon Berndt
Which Roskam did you find the Cherokee numbers in? Oops. I was mistaken. It's not Roskam -- it's McCormick, Aerodynamics, Aeronautics and Flight Mechanics, Appendix C. Cameron Munro sent me copies of it. It's a very complete example. You could rough-in a Cherokee in YASim first, just

RE: [Flightgear-devel] YASim 747-400 climb performance

2002-06-01 Thread Jon Berndt
Not at all unlike being a test pilot. :) This is the analogy I like to use, as well. It's one reason I'd really like to see us model EAFB well. Where else would we test our models? We wouldn't want to cause virtual property damage anywhere else! ;-) Jon smime.p7s Description:

RE: [Flightgear-devel] Space Flight Simulation Poll

2002-06-01 Thread Jon Berndt
The goal is by using a set of standards one could hyper-jump ones spacecraft between star systems, much the way one I'm not really interested in anything outside of earth orbit, for now. smime.p7s Description: application/pkcs7-signature

RE: [Flightgear-devel] Flightgear review in FlightXPress

2002-06-01 Thread Jon Berndt
Some of the models are awful. Some are very much not. There's far too much variation across our flight models (across different code bases and even between individual aircraft in the same FDM) to permit a blanket statement like this one. It's just kibitzing. If he had specific complaints

[Flightgear-devel] Turbine engine starting procedure

2002-06-02 Thread Jon Berndt
For the process of starting a turbine engine, this is what I have identified, so far: Actions: --- 1) engage the starter 2) throttle at ground idle setting 3) ignition on (at ~8% ground idle rpm) 4) fuel on 5) at ignition, engine begins to produce torque 6) when torque produce by engine

[Flightgear-devel] Template questions

2002-06-11 Thread Jon Berndt
I've got a problem with an undefined reference. I've set up a function template in one of my classes. The declaration is: template class T T IntegrateAB4(double delta_t, T vLast, T* vLastArray); The definition is: template class T T FGState::IntegrateAB4(double delta_t, T vLast, T

RE: [Flightgear-devel] Autopilot planning [was RE: progress]

2002-06-14 Thread Jon Berndt
AXIS 3) Yaw damper: I am anxious that this be a totally separate system from the autopilot, it's a very independent system apart from the fact it drives control surfaces and the switch is usually on the MCP :-) If we ever go as far as systems modeling at the block level, that's especially

RE: [Flightgear-devel] blue angel

2002-06-18 Thread Jon Berndt
It's a chicken an the egg problem. Any aircraft can have quickness in maneuverability with large enough control surfaces. But you can't make the control surfaces too large and still intercept nuclear bombers at Mach 2. True .. though not so much Chicken and Egg as balanced design

RE: [Flightgear-devel] blue angel

2002-06-18 Thread Jon Berndt
For extra credit, record a pilot grunting or huffing sound and play it at high G's. guffaw smime.p7s Description: application/pkcs7-signature

RE: [Flightgear-devel] blue angel

2002-06-18 Thread Jon Berndt
Robert Deters wrote: Actually the F-4 is unstable, but only marginally. It just means that the plane would eventually diverge if the pilot did nothing to stop it. Rob: I think most people, when thinking of stability think: If I made an exact paper airplane of the aircraft in question and

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