Re: [Flightgear-devel] making sign of side-slip consistent between fdm (bug 901)

2013-07-29 Thread Jon S. Berndt
As in this image: http://dodlithr.blogspot.com/2011/09/airplanes-stability-axis.html Beta is positive when the wind hits the right side of the vehicle. This is the only standard convention I have ever seen. I would recommend strongly against artificially changing the sign of this parameter as

Re: [Flightgear-devel] Positioning Aircraft: accuracy

2013-06-24 Thread Jon S. Berndt
It seems that we have a problem with the FG/JSBSim-interface or it's a rounding error during JSBSim-initialisation?! Summarizing my observations: - immediately after FG is started the property browser shows the correct values - this values hold true as long as the splash-screen appears -

Re: [Flightgear-devel] Turbulence should affect YaSim and JSBSim the same way

2013-06-16 Thread Jon S. Berndt
..my oversimplification: http://wiki.flightgear.org/YASim guesses how it flies from how it looks, while http://wiki.flightgear.org/JSBSim knows how it flies and tries to show us how that looks, e.g. stalls are assymetrical in YASim but (still?) symmetrical in JSBSim. ..if I guess FG

Re: [Flightgear-devel] JSBSim Synch with FlightGear

2013-06-11 Thread Jon S. Berndt
Ok, I have pushed the current JSBSim/CVS version to FlightGear git. Please check for and report breakages. In case of aircraft breakages compare aircraft behaviour before and after the JSBSim update, if possible, to determine if the breakage is new or not. Cheers, Anders That's great,

Re: [Flightgear-devel] JSBSim Synch with FlightGear

2013-06-09 Thread Jon S. Berndt
developers discussions Subject: Re: [Flightgear-devel] JSBSim Synch with FlightGear On 14 Jan 2013, at 02:57, Jon S. Berndt jonsber...@comcast.net wrote: When's the next released scheduled after the upcoming one? http://wiki.flightgear.org/Release_plan So, 7 months from

Re: [Flightgear-devel] [Jsbsim-devel] about fdm properties

2013-05-11 Thread Jon S. Berndt
I agree that - at least - we should mention it in the documentation. We could hypothetically also accept data in any of the supported frames. Unfortunately, a lot of the data present in technical reports (NACA/NASA/AIAA) that I have seen is ambiguous as to frame for the rotational

Re: [Flightgear-devel] JSBSim Synch with FlightGear

2013-01-13 Thread Jon S. Berndt
On Sun, Jan 6, 2013 at 11:35 AM, Torsten Dreye wrote: Hi JSBSim and FlightGear lists, should we sync the latest JSBSim code into FlightGear for the next release, scheduled for February this year? My vote is not to sync at this point. I'd consider a JSBSim sync to be similar to

Re: [Flightgear-devel] JSBSim Synch with FlightGear

2013-01-13 Thread Jon S. Berndt
Yes, i had hoped, too. However, as you mentioned, many new features have been developed and that violates our feature freeze rule, unfortunately. That rule has been introduced for exactly this situation: not to raise some last minute issues (to avoid bugs here). Sorry - but as we improve

Re: [Flightgear-devel] JSBSim Synch with FlightGear

2013-01-13 Thread Jon S. Berndt
Sorry - but as we improve our plan with every release, this most likely will not happen again ;-) Torsten When was the last time that JSBSim was synched with FlightGear? Jon We synced about six months ago just before the last release of FGFS. Outerra will be more up to date

Re: [Flightgear-devel] (JSBsim) body accelerations

2012-12-19 Thread Jon S. Berndt
hi, my two cents, as someone interested in better formation flight. First, about using FGAccelerations::GetUVWdot as acceleration, i'm not sure you will have what you want. i'm trying to do (slowly) something about the lag ( http://wiki.flightgear.org/Mp-patch ), and i tried to use UVWdot,

Re: [Flightgear-devel] Scenery not being loaded

2012-11-11 Thread Jon S. Berndt
When the HUD no longer works, make sure you haven't deleted anything in FGDATA - like the fonts. You don't need to define the path to the base scenery (within fgdata). If you downloaded additional scenery, in one or multiple separate directories, you can separate the paths with : (works also

Re: [Flightgear-devel] Scenery not being loaded

2012-11-11 Thread Jon S. Berndt
--airport=KCHS Cannot find Nasal script './data/Nasal/local_weather ... ... Nasal runtime error: non-objects have no members ... Jon -Original Message- From: Jon S. Berndt [mailto:jonsber...@comcast.net] Sent: Sunday, November 11, 2012 9:33 AM To: 'FlightGear developers discussions

Re: [Flightgear-devel] Scenery not being loaded

2012-11-11 Thread Jon S. Berndt
Am 11.11.2012 17:39, schrieb Jon S. Berndt: Also, if I specify only the custom scenery path - as in the command line below - I get the errors that follow. Don't know if those are revealing or unexpected ... bin/Win64/fgfs.exe --fg-root=./data --fg-scenery=./scenery --aircraft

Re: [Flightgear-devel] Scenery not being loaded

2012-11-11 Thread Jon S. Berndt
Well, I've tried all sorts of combinations of pathnames, using different path name specification forms (windows, linux, etc.) and I can get FlightGear to run using several of the forms - and to load the scenery I desire, as well - I cannot get both the custom scenery and the HUD symbology to work

Re: [Flightgear-devel] Scenery not being loaded

2012-11-11 Thread Jon S. Berndt
Well, I've tried all sorts of combinations of pathnames, using different path name specification forms (windows, linux, etc.) and I can get FlightGear to run using several of the forms - and to load the scenery I desire, as well - I cannot get both the custom scenery and the HUD symbology to

Re: [Flightgear-devel] Scenery not being loaded

2012-11-10 Thread Jon S. Berndt
. Jon -Original Message- From: Jon S. Berndt [mailto:jonsber...@comcast.net] Sent: Friday, November 09, 2012 3:59 PM To: 'FlightGear developers discussions' Subject: Re: [Flightgear-devel] Scenery not being loaded Another thing: the Moon descends through the fog and is still visible

[Flightgear-devel] Scenery not being loaded

2012-11-09 Thread Jon S. Berndt
I'm running the latest FlightGear (64 bit v2.8.0.5, under Windows 7). I'm driving it from an external instance of JSBSim, and it's working very well except that no terrain is loaded. I can see what looks like a planet below me that is covered in fog. Altitude ranges from about 40kft to 200kft, and

Re: [Flightgear-devel] Scenery not being loaded

2012-11-09 Thread Jon S. Berndt
Another thing: the Moon descends through the fog and is still visible - there doesn't seem to be any terrain that gets in the way and occludes it. Even when I am right on top of where the runway should be, there is nothing except blue water. Jon -Original Message- From: Jon S. Berndt

Re: [Flightgear-devel] FSWeekend 2012...

2012-11-04 Thread Jon S. Berndt
... is already over now, unfortunately. For those who couldn't attend but are interested in what it was like (make sure to join next year!), here are some photos showing the event and FlightGear booth: http://www.flickr.com/photos/70866411@N05/sets/72157631926925511/detail / More

Re: [Flightgear-devel] Fg Fuel System Changes

2012-10-22 Thread Jon S. Berndt
John, Yes, there were some changes. I’ll try to help out soon, but am limited on time at the moment. You might search the JSBSim mailing list for the “tank priority” terms. Briefly, as I recall, there is now a “priority” element, with priority “1” being the highest. I forget if “0”

Re: [Flightgear-devel] Fg Fuel System Changes

2012-10-22 Thread Jon S. Berndt
. FGPiston does provide a gal/hr output, and uses 6.0 lb/gal as the conversion factor. FlightGear manipulates the JSBSim tank quantities by converting gallons to pounds in JSBSim.cxx, using a conversion factor of 6.6 lb/gal. Dave From: Jon S. Berndt [mailto:jonsber...@comcast.net] Sent

Re: [Flightgear-devel] Physics engine of Flightgear

2012-10-17 Thread Jon S. Berndt
There are two primary ones: - YASim - JSBSim See: http://wiki.flightgear.org/Flight_Dynamics_Model Jon From: kunai...@yahoo.co.jp [mailto:kunai...@yahoo.co.jp] Sent: Wednesday, October 17, 2012 12:28 AM To: flightgear-devel@lists.sourceforge.net Subject:

Re: [Flightgear-devel] Quad-copters

2012-10-14 Thread Jon S. Berndt
If I'm not mistaken, there's already a quad copter flight modeled with JSBSim. Jon From: Curtis Olson [mailto:curtol...@flightgear.org] Sent: Sunday, October 14, 2012 7:05 PM To: FlightGear developers discussions Subject: [Flightgear-devel] Quad-copters Quick question: Do we have

Re: [Flightgear-devel] Quad-copters

2012-10-14 Thread Jon S. Berndt
Yeah, look here: http://diydrones.com/profiles/blog/list?user=0bcj6vzj8r2k0 Jon From: Curtis Olson [mailto:curtol...@flightgear.org] Sent: Sunday, October 14, 2012 7:05 PM To: FlightGear developers discussions Subject: [Flightgear-devel] Quad-copters Quick question: Do we have

Re: [Flightgear-devel] FW:Using FlightGear to visualize JSBSim state

2012-10-04 Thread Jon S. Berndt
I found that if I waited a little but longer so that FlightGear was completely started up, and used UDP instead of TCP that it worked. Great! -Original Message- From: Jon S. Berndt [mailto:jonsber...@comcast.net] Sent: Wednesday, October 03, 2012 6:03 AM To: 'FlightGear developers

[Flightgear-devel] FW:Using FlightGear to visualize JSBSim state

2012-10-03 Thread Jon S. Berndt
JSBSim state On Tue, 2 Oct 2012, Jon S. Berndt wrote: Not sure it does work: FlightGear/projects/VC90/Win32/Release/fgfs.exe --fg-root=c:/cygwin/home/jon/flightgear/fgdata --aircraft=c172p native-fdm=socket,in,60,,55p --fdm=external Processing command line arguments

Re: [Flightgear-devel] X-Plane sued for patent infringement

2012-09-16 Thread Jon S. Berndt
I tried to post, but it appears my post went away. I noticed that one of the comments made a remark about X-plane aerodynamics. I think it might be time for a paper on that which we can use to inform people. Jon From: Curtis Olson [mailto:curtol...@flightgear.org] Sent: Sunday,

Re: [Flightgear-devel] Running Nasal at simulation rate

2012-08-29 Thread Jon S. Berndt
Concerning your original issue on implementing an autopilot: a much better way to do it is to avoid Nasal for the actual autopilot controller elements (numeric computation). Instead, use XML autopilot rules for the filter, gain, damper, integrator elements:

Re: [Flightgear-devel] Gear transit times

2012-08-29 Thread Jon S. Berndt
Jack, Check out the attached message from the JSBSim developer list. Jon From: castle...@comcast.net [mailto:castle...@comcast.net] Sent: Wednesday, August 29, 2012 7:52 PM To: FlightGear developers discussions Subject: [Flightgear-devel] Gear transit times Hi, Is it possible

Re: [Flightgear-devel] Earthview - Orbital terrain rendering in FG

2012-03-16 Thread Jon S. Berndt
2) The high altitude FDM problem: Our only spacecraft (Vostok) makes just 150 km altitude, apparently to prevent it from running into a region where the FDM breaks down. This isn't nearly high enough to see nice orbit scenes without pushing gigabytes of textures at the problem. I have not

Re: [Flightgear-devel] Cessna 172p cockpit improvement

2011-12-22 Thread Jon S. Berndt
Ah, yes, found it in McCormick's Chapter six. Should we add some comment in c172p.xml as a reference for future generations? The computation is not very intuitive at first sight (at least for me). Torsten I think that's a very good idea. Also, I guess we should have some discussion on

Re: [Flightgear-devel] turbine inlet temperature in the seneca (TIT)

2011-12-06 Thread Jon S. Berndt
Tuomas, I can say for certain that YASim does not model TIT, and I believe JSBsim doesn't either, though there seems to be a stub for TIT modeling which may be where that property comes from. Someone please correct me if I'm wrong about JSBsim and TIT. A developer may have written custom

Re: [Flightgear-devel] The state of things in Flight Gear

2011-08-01 Thread Jon S. Berndt
From: thorsten.i.r...@jyu.fi To provide the context: I wrote the above in response to pictures of Mars (from Celestia) being posted and talk about Apollo missions, i.e. having interplanetary missions in mind. (Jon actually knows that, because I explained it later in the thread :-) ) -

Re: [Flightgear-devel] The state of things in Flight Gear

2011-07-29 Thread Jon S. Berndt
From: thorsten.i.r...@jyu.fi [mailto:] I think it's grossly unfair to mix these issues: Spaceflight requires to essentially write a space simulator. One of my first statements in the forum was: Orbital flights opens a whole new can of worms besides the need for different rendering -

[Flightgear-devel] More realistic videos

2011-07-22 Thread Jon S. Berndt
I've noticed sometimes that the videos produced by the flightgear community have some characteristics that make them seem unrealistic - not that they aren't still enjoyable to watch. I look for new ones regularly. I think they could be better, though. There are some things that could be done that

Re: [Flightgear-devel] Turbulence in YASim vs. JSBSim

2011-07-11 Thread Jon S. Berndt
Note that the JSBSim environment model is in the middle of a major overhaul so I wouldn't make too much of it at this point. It would be more interesting to see how it compares after the rewrite. Erik The architecture is, but it should not affect the environment modeling. Also, the new code

Re: [Flightgear-devel] JSBSim new atmosphere

2011-06-23 Thread Jon S. Berndt
The way I understand this, the issues are to some degree separate (?). I believe (correct me if I'm wrong) that what Jon is largely talking about is the altitude extrapolation of atmosphere conditions, i.e. given that I specify pressure, temperature and dew point at sea level, how will these

[Flightgear-devel] JSBSim new atmosphere

2011-06-22 Thread Jon S. Berndt
I'm working on modifying the interface between JSBSim and FlightGear to work with the new JSBSim standard atmosphere model. There are two or three ways that the atmosphere model can be modified by the calling application: A temperature bias can be added to the entire temperature profile (from sea

Re: [Flightgear-devel] JSBSim new atmosphere

2011-06-22 Thread Jon S. Berndt
Torsten, Eventually, there will be a null atmosphere model that will allow flightgear to completely control the temperature pressure and density. There will also be several other atmosphere models available in future versions of JSBSim. I'd strongly recommend using the JSBSim atmosphere when

[Flightgear-devel] JSBSim Functions for Propwash and Downwash [was: Clarification on YASim input]

2011-06-19 Thread Jon S. Berndt
Hal, Oops! Sorry I attributed code to you that came from somewhere else. :-) I now seem to recall experimenting with your model at that time - actually replacing the older one in JSBSim cvs with yours, then adding the estimated propwash effects. Hal wrote: These

Re: [Flightgear-devel] JSBSIm, aeromatic, crosswind taxiiing, et cetera

2011-06-19 Thread Jon S. Berndt
From: John Denker [mailto:j...@av8n.com] On 06/19/2011 06:46 AM, Jon S. Berndt wrote: Maybe I've gone wrong somewhere here, but something similar might work. Also, in situations like a flat spin or tail slide this probably falls apart! Let's postpone discussion of exotic flight

Re: [Flightgear-devel] Clarification on YASIM input (actionpt)

2011-06-18 Thread Jon S. Berndt
From: syd adams [mailto:adams@gmail.com] Does jsbsim ? I've just begun to look into it , so I don't really know jsbsim's capabilities. It's not automatic - not a natural effect calculated by JSBSim code itself. Like many things in JSBSim, the facilities are present to let the aircraft

Re: [Flightgear-devel] Could We Sync JSBSim for 2.3.0, Please?

2011-06-16 Thread Jon S. Berndt
Does the new atmosphere code work well with FlightGear's atmosphere? I remember we had some issues when fg and jsbsim were fighting for the correct weather values. But you are right - there are some nice new features we should have in 2.4.0. There will be four weeks starting tomorrow

[Flightgear-devel] Atmosphere heads-up

2011-06-10 Thread Jon S. Berndt
There is a change coming to the JSBSim modeled atmosphere. A new standard atmosphere class is being completed that models the U.S. Standard Atmosphere (1972) all the way up to 1000 km. FlightGear interacts with the FDM atmosphere in a predictable way, since the user may want to set conditions.

[Flightgear-devel] Atmosphere

2011-05-17 Thread Jon S. Berndt
What is the requirement from the FlightGear side for an atmosphere model? I'd like to remove the capability to drive the JSBSim standard atmosphere model from FlightGear, but first I'd like to get a clear picture of how FlightGear users interact with the atmosphere, if at all. Comments? Jon

Re: [Flightgear-devel] Atmosphere

2011-05-17 Thread Jon S. Berndt
What is the requirement from the FlightGear side for an atmosphere model? I'd like to remove the capability to drive the JSBSim standard atmosphere model from FlightGear, but first I'd like to get a clear picture of how FlightGear users interact with the atmosphere, if at all. Comments?

Re: [Flightgear-devel] JSBSim turbulence models: revealing an almost hidden gem

2011-05-08 Thread Jon S. Berndt
Credit the new JSBSim milspec/tustin turbulence model to some great work by Andreas Gaeb last September. Jon Sent from my Samsung Captivate(tm) on ATT Torsten Dreyer tors...@t3r.de wrote: Great! Thank you! I really like the turbulence model of JSBSim- feels much more realistic than the

Re: [Flightgear-devel] Vostok-1

2011-04-25 Thread Jon S. Berndt
Good description by Durk. If you want to know more about ascent guidance and control, this is an interesting and more basic look at that: http://www.aero.org/publications/crosslink/winter2004/06.html And this, http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2

Re: [Flightgear-devel] Vostok-1

2011-04-18 Thread Jon S. Berndt
Take a look at the J246 model in the JSBSim distribution or in our CVS browser. That's a hypothetical heavy launch vehicle flight model that is under (slow) development. Jon -Original Message- From: AJ MacLeod [mailto:aj-li...@adeptopensource.co.uk] Sent: Monday, April 18, 2011 6:24

Re: [Flightgear-devel] Vostok-1

2011-04-17 Thread Jon S. Berndt
I thought I was going to post the first rocket but it looks like you beat me to it! :-) Cool! Jon Sent from my Samsung Captivate(tm) on ATT -- Benefiting from Server Virtualization: Beyond Initial Workload

Re: [Flightgear-devel] Vostok-1

2011-04-17 Thread Jon S. Berndt
What perfect timing for this model too, given the recent 50th anniversary of Yuri Gagarin's first human spaceflight. Jon Sent from my Samsung Captivate(tm) on ATT -- Benefiting from Server Virtualization: Beyond Initial

[Flightgear-devel] Building FlightGear with MSVC++ 10.0

2011-04-11 Thread Jon S. Berndt
I didn't find a project file for building FlightGear with MSVC++ Express 2010. Is there one yet? Jon -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network.

Re: [Flightgear-devel] Improving the elevator modeling

2011-03-31 Thread Jon S. Berndt
Forwarded to the JSBSim-devel list. Jon On Wed, Mar 30, 2011 at 11:05 AM, cas...@mminternet.com wrote: Hi, ... The only parts lacking in the JSBSim as best as I can determine are some numbers to define the elevator aero coefficents, hinge moments as a function of tail alpha

Re: [Flightgear-devel] Calculating free stick position and forces

2011-03-31 Thread Jon S. Berndt
Perhaps downwash and hinge force calculations should be the subject of a section in the xml aerodynamics file so that they can be tailored on a per-aircraft basis. Alan the xml files should be used to load the respective aircraft data for aero coefficients, tail geometry, and

Re: [Flightgear-devel] Improving the elevator modeling

2011-03-30 Thread Jon S. Berndt
Hi, ... The only parts lacking in the JSBSim as best as I can determine are some numbers to define the elevator aero coefficents, hinge moments as a function of tail alpha and deflection, and changes in the aspect ratio of the wing as a function of flap deflections that will be used to

[Flightgear-devel] Quiet

2011-03-15 Thread Jon S. Berndt
It's been quiet here. -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d

Re: [Flightgear-devel] Logos and licensing

2011-03-04 Thread Jon S. Berndt
I suspect that msfs and xplane have licensing agreements with trademark holders. It would of course be good to know this! Jon Sent from my Samsung Captivate(tm) on ATT Vivian Meazza vivian.mea...@lineone.net wrote: Chris On Thu, 2011-03-03 at 09:43 +, Vivian Meazza wrote: I'm going

Re: [Flightgear-devel] Logos and licensing

2011-03-03 Thread Jon S. Berndt
I'm going to set you all a simple multiple choice test - pay attention because I'm only going to say this once: 7. Do I have to ask permission of the motor manufacturer, the professional photographer, or you to make or to publish my work on the internet? A. No B. Yes 8. I got there

Re: [Flightgear-devel] Logos and licensing

2011-02-26 Thread Jon S. Berndt
I think that a key with all this is that none of the models will be sold for profit. You could argue that even if the models are on a cd that is sold for profit since they are also available freely that the models are not the source of the profit. Jon Sent from my Samsung Captivate(tm) on

Re: [Flightgear-devel] Logos and licensing

2011-02-26 Thread Jon S. Berndt
Staying beneath the radar might be effective but do you feel good about it? Is it the ethical thing to do? Unethical? Hoping that ignorance is bliss? Trying to ignore a perceived problem and wishing it would go away because it is too hard to do things the right way? OTOH even if a company

Re: [Flightgear-devel] Logos and licensing

2011-02-26 Thread Jon S. Berndt
From: Curtis Olson [mailto:curtol...@gmail.com] Jon: I respect your position, but I humbly ask then that you please post or send me your letters for usage permission from Boeing, Airbus, Douglas, Lockheed, Aérospatiale, BAC, deHavilland, McDonnell, Cessna, Fokker,

Re: [Flightgear-devel] Logos and licensing

2011-02-26 Thread Jon S. Berndt
From: Curtis Olson Hi Jon, I apologize for being persnickety here, but I am searching for clarity and consistency on this issue. Has the JSBSim project asked permission from all the aircraft manufacturers that you create and

Re: [Flightgear-devel] Logos and licensing

2011-02-18 Thread Jon S. Berndt
From: Stuart Buchanan [mailto:*.*.*] I agree with Jon on this - ideally we should be pro-active about asking for permission, even if we don't like the answer. ... Jon - could you post the disclaimer text you eventually used? -Stuart With JSBSim, our situation is a little different,

Re: [Flightgear-devel] Incorrect conversion used for lbs to gallon of fuel

2011-02-12 Thread Jon S. Berndt
Hi Bertrand, I am currently working on a more generic solution to the issue based on your patch. Currently we have at least three different places within FlightGear calculating tank contents and converting them between different units. The idea is to have a TankProperties class

Re: [Flightgear-devel] Sinking feeling - c172 on gravel runway

2011-02-11 Thread Jon S. Berndt
I think ya'll just need to hang this one up and let it alone. g. I know. What a love-fest, eh? ;-) jb -- The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE: Pinpoint memory and threading

Re: [Flightgear-devel] JSBSIM Aircraft Crash at Reset

2011-02-06 Thread Jon S. Berndt
Bertrand, Is this patch supposed to be applied to JSBSim as it currently exists in JSBSim CVS, or applied against the patch that Thorsten mentions? Jon -Original Message- From: Bertrand Coconnier [mailto:bcoco...@gmail.com] Sent: Sunday, February 06, 2011 6:09 AM To: FlightGear

Re: [Flightgear-devel] JSBSIM Aircraft Crash at Reset

2011-02-06 Thread Jon S. Berndt
2011/2/6 Jon S. Berndt jonsber...@comcast.net: Bertrand, Is this patch supposed to be applied to JSBSim as it currently exists in JSBSim CVS, or applied against the patch that Thorsten mentions? BTW, this patch won't apply automatically due to path issues. I am required to enter

Re: [Flightgear-devel] JSBSIM Aircraft Crash at Reset

2011-02-06 Thread Jon S. Berndt
On Sun, 2011-02-06 at 13:18 +0100, Bertrand Coconnier wrote: Hi Jon, You may already know that but the current behaviour of Flight Gear reset process is coded at a higher level than JSBSim glue code (JSBSim.cxx). The reset process is to unbind - delete - create a new instance of the

Re: [Flightgear-devel] JSBSIM Aircraft Crash at Reset

2011-02-06 Thread Jon S. Berndt
Go to JSBSim/src and add '-p 4' to the patch command line. (this skips 4 levels of directory entries) Erik That works. Sort of. But it's trying to patch JSBSim.cxx which we no longer have in JSBSim standalone. Jon

Re: [Flightgear-devel] JSBSIM Aircraft Crash at Reset

2011-02-06 Thread Jon S. Berndt
PS: I've made several reset tests, all look good now. Also, no side-effects with the previous patches were reported, so I'm also pushing the patches to FG/2.2 now (trying to remember the entire patch sequence... :) ). cheers, Thorsten We'll definitely want to be sure that we don't lose

Re: [Flightgear-devel] JSBSIM Aircraft Crash at Reset

2011-02-05 Thread Jon S. Berndt
How can I update my FlightGear development codebase (which was created a few months ago) from git so I can try to see this problem? Jon -Original Message- From: Erik Hofman [mailto:e...@ehofman.com] Sent: Saturday, February 05, 2011 6:42 AM To: FlightGear developers discussions

Re: [Flightgear-devel] JSBSIM Aircraft Crash at Reset

2011-02-05 Thread Jon S. Berndt
From: ThorstenB [mailto:bre...@gmail.com] Hi, probably spotted the cause for the reported reset crash: it's the same as already reported before - targeted by this earlier patch: http://www.gitorious.org/fg/flightgear/commit/287cc74965e11ff3888117a9d 9b88ed2bdbb9252 This patch unties

Re: [Flightgear-devel] altimeter problem

2011-01-27 Thread Jon S. Berndt
Need new graphics cards amd will upgrade to a quad-core machine. In the meantime going to offload some of the number crunching for one of the projectors to a slave to shoot the videos for the UCD presentation. UCD ?? jb

Re: [Flightgear-devel] JSBSim merge

2011-01-26 Thread Jon S. Berndt
-Original Message- From: Erik Hofman [mailto:e...@ehofman.com] Sent: Wednesday, January 26, 2011 5:55 AM To: FlightGear developers discussions Subject: Re: [Flightgear-devel] JSBSim merge On Mon, 2011-01-24 at 15:40 +, James Turner wrote: Okay - I'm going to re-apply my

Re: [Flightgear-devel] Tried to initialize a non-existent engine!

2011-01-25 Thread Jon S. Berndt
It comes up when at reset , for instance c172p.and we get a crash with that message: Tried to initialize a non-existent engine! It was solved, but my was over-written when Erik updated JSBSim (because I didn't remember to submit it to JSBSim). But last night I re-appllied the fix to Git,

Re: [Flightgear-devel] NaNs when resetting JSBSim

2011-01-23 Thread Jon S. Berndt
No, the JSBSim object is created on the heap memory - not on the stack. Only local variables (including local static objects) are on the stack. Heap isn't initialized, neither stack. So member variables have random values - unless explicitly set. Most compilers provide warnings for

Re: [Flightgear-devel] Hang on reset

2011-01-01 Thread Jon S. Berndt
I seem to vaguely recall some issue with resetting (with JSBSim). I had thought that the most recent JSBSim code fixed that, though. Jon From: henri orange [mailto:hohora...@gmail.com] Sent: Saturday, January 01, 2011 7:32 AM To: FlightGear developers discussions Subject: Re:

Re: [Flightgear-devel] p51d-jsbsim merge request

2010-12-27 Thread Jon S. Berndt
From: Hal V. Engel [mailto:hven...@gmail.com] snip Property /engines/engine[0]/mp-inhg is already defined. Property /engines/engine/oil-temperature-degf is already defined. Property /controls/fuel/tank-selector is already defined. Property

Re: [Flightgear-devel] Some Aircraft ( jsbsim fdm ?) cannot reset

2010-12-14 Thread Jon S. Berndt
I wonder when this started happening? When was the previous time that a sync with JSBSim occurred? -Original Message- From: James Turner [mailto:zakal...@mac.com] Sent: Tuesday, December 14, 2010 6:13 AM To: FlightGear developers discussions Subject: Re: [Flightgear-devel] Some

Re: [Flightgear-devel] flight data playback

2010-12-10 Thread Jon S. Berndt
It would be really, really cool if you could do this using the JSBSim internal features so it could run in stand-alone, too. :) Ron This is true, because JSBSim is well-suited to various GNC systems modeling. This has already been done to some degree, but not a lot of time has been spent on

[Flightgear-devel] Squaring Control Inputs

2010-12-10 Thread Jon S. Berndt
If it was important that a JSBSim aircraft model gets a non-squared joystick input - that is, a linear joystick position from -1. To +1 (regardless of what is in the joystick file), how would we command (at runtime) the squaring to be false? The thinking is that there should be a class method in

Re: [Flightgear-devel] Aircraft model/cockpit rating

2010-12-01 Thread Jon S. Berndt
Running through the same exercise for the p51d-jsbsim: FDM: 5 Systems: 4 (still needs some electrical systems stuff) Model: 3 (missing cooling door animation, liveries and Ambient Occlusion effect) Cockpit: 3 (what is there is a 4 but it is missing a few things IE. not complete) Total

Re: [Flightgear-devel] ProFlightSImulator

2010-12-01 Thread Jon S. Berndt
Woohoo!!! I clicked on one of those ProFlightSimulator ads, and it took me to a page saying: ACCOUNT SUSPENDED. See for yourself here! http://www.proflightsimulator.com/cgi- sys/suspendedpage.cgi?hop=txflyer20 Cheers! Drinks all around! Check Six, Jack It's back. I was viewing a

Re: [Flightgear-devel] Bouncing JSBSim aircraft

2010-11-28 Thread Jon S. Berndt
There was an update to the gear code yesterday. I suppose it's possible that the new update has side effects. We'll look into it. Does anyone know when the last good code is dated? Jon Sent from my Samsung Captivate(tm) on ATT Gijs de Rooy gijsr...@hotmail.com wrote: Hi all, after

Re: [Flightgear-devel] p51d-jsbsim merge request.

2010-11-28 Thread Jon S. Berndt
-Original Message- From: Hal V. Engel [mailto:hven...@gmail.com] I just created a merge request to move updates to the JSBSim p51d into fgdata. Changes include: ... Hal Would love to see a video of a flight showing these updated features. I think it would be a really nice showcase

Re: [Flightgear-devel] p51d-jsbsim merge request.

2010-11-28 Thread Jon S. Berndt
There is tons of stuff that remains to be done still. You sound like me: always seeing what is yet left to be done. From my point of view, your work on this model is at the top of the charts. There are also things that I have not attempted to implement yet because they are not supported by

Re: [Flightgear-devel] Further properties heads-up - property objects.

2010-11-20 Thread Jon S. Berndt
It has another interesting feature, suggested by ThorstenB - if you try to read an invalid path, it doesn't silently succeed - it throws an exception! This is to avoid lurking typos in property paths, which has been an issue. (I will be adding a 'weak' variant, that takes a default value, for

Re: [Flightgear-devel] How use FG without graphics

2010-11-19 Thread Jon S. Berndt
Yes. How do you want to send it? To what? See the JSBSim Reference Manual at www.jsbsim.org. Jon -Original Message- From: ing. Petr Ondra [mailto:petr.on...@erm.cz] Sent: Friday, November 19, 2010 3:13 AM To: FlightGear developers discussions Subject: [Flightgear-devel] How use FG

Re: [Flightgear-devel] Fwd: in air starts and all preset control/trim settings broke

2010-11-03 Thread Jon S. Berndt
This would be a good change to test. Note that JSBSim is experience NaNs for me on reset/re-position, much of the time - I think I'm more prone to this than other people, for some reason. I see the same behaviour before and after the change, and Anders informs me it's a long-standing bug, but

Re: [Flightgear-devel] 747-400 causing crash of fgfs

2010-10-17 Thread Jon S. Berndt
The URL given doesn't work. Jon See http://www.youtube.com/watch?v=sA9Kato1Cx. http://www.youtube.com/watch?v=sA9Kato1Cx.%20A A , but that is for upward loading. Winking smile emoticon Alan

Re: [Flightgear-devel] Yasim, Quadcopter and MatLab

2010-09-19 Thread Jon S. Berndt
I once toyed with a quadracopter model based on JSBSim. The propeller model wasn't sufficient to the task, and I haven't tried again with the newer rotor model. There is a simple 3D model you could integrate with the YASim version perhaps. The repository is on gitorious:

Re: [Flightgear-devel] Yasim, Quadcopter and MatLab

2010-09-19 Thread Jon S. Berndt
I once toyed with a quadracopter model based on JSBSim. The propeller model wasn't sufficient to the task, and I haven't tried again with the newer rotor model. There is a simple 3D model you could integrate with the YASim version perhaps. The repository is on gitorious:

Re: [Flightgear-devel] Yasim, Quadcopter and MatLab

2010-09-19 Thread Jon S. Berndt
There also may be a way to do this with the new JSBSim rotor model. There will probably be an update to that code sometime soon. Jon From: Julien Peeters Great to know that. I thought JSBSim cannot model rotor based aircrarft. Some one knows when this will be

Re: [Flightgear-devel] C++ for Simulation

2010-09-17 Thread Jon S. Berndt
-devel@lists.sourceforge.net Subject: Re: [Flightgear-devel] C++ for Simulation -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Jon S. Berndt schrieb: If cost is an issue (isn't it always?), is it worth it to expend the resources to clean up code that may have been gathering flotsam and jetsam

[Flightgear-devel] C++ for Simulation

2010-09-16 Thread Jon S. Berndt
Guys, I've got a question that's come up in my day job. I'd like to ask for your opinion. If you had to justify to your boss the rewrite of old C code in C++, could you do it? If cost is an issue (isn't it always?), is it worth it to expend the resources to clean up code that may have been

[Flightgear-devel] NASA 3D Models

2010-09-12 Thread Jon S. Berndt
Can these be converted to the format that FlightGear uses - particularly the crawler, the VAB, and the launch complex - as well as the launch vehicle models? Jon -- Start uncovering the many advantages of virtual

Re: [Flightgear-devel] NASA 3D Models

2010-09-12 Thread Jon S. Berndt
models just yesterday! I managed to open the Shuttle model in Blender, so I guess it would be possible to have them exported to Flightgear. BTW, here's the link to the site: http://www.nasa.gov/multimedia/3d_resources/models.html Regards, Fabián On Sun, Sep 12, 2010 at 9:34 AM, Jon S. Berndt

Re: [Flightgear-devel] NASA 3D Models

2010-09-12 Thread Jon S. Berndt
Reading the NASA guidelines it seems to be compatible with GPL, so I put the VAB is in git in Models/Structures. Do you have any plans for it? Vivian Not for the VAB, so much, but to launch things from KSC the launch pad is needed. :-) And the Ares-1 vehicle would be nice, too. I'll try

Re: [Flightgear-devel] Building FlightGear under Vista

2010-09-06 Thread Jon S. Berndt
Hi Jon, If you don't do local changes updating is as easy as cd:ing into fgdata Done. (and the respective source repositories) How do I do this? and type 'git pull'. JB -- This SF.net Dev2Dev email is

Re: [Flightgear-devel] Building FlightGear under Vista

2010-09-06 Thread Jon S. Berndt
Like this? git pull git://gitorious.org/fg/fgdata.git ?? Which branch should I specify? Jon -Original Message- From: Jon S. Berndt [mailto:jonsber...@comcast.net] Sent: Monday, September 06, 2010 11:26 AM To: 'FlightGear developers discussions' Subject: Re: [Flightgear-devel

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