RE: [Flightgear-devel] Re: Wing motion

2005-12-20 Thread Jon S. Berndt
Unfortunately, so far it only works with solid (unsmoothed) objects. Looks like a plib bug to me, but I have yet to find the exact reason. Ahh, that would be a shame. I'm very much looking forward to see this in action (or better yet, see it in FlightGear). Erik For wing flex (at least

RE: [Flightgear-devel] C310 Update

2005-12-20 Thread Jon S. Berndt
Hi Stuart, Thanks! How do you feel is the front-wheel steering (low speed, low rpm)? If I look from outside the wheel points to one direction but the action of the aircraft is very slow. At a little bit higher speed the a/c is sliding forward despite the wheel direction. Just a hint,

[Flightgear-devel] Sim Reset

2005-12-19 Thread Jon S. Berndt
When a sim reset is selected from the menu, what is the calling sequence to the FDMs that follows? That is, which FGInterface functions are called (and from where)? I thought that might be done from main.cxx, but I can't find it at the moment. Jon ___

RE: [Flightgear-devel] Re: Sim Reset

2005-12-19 Thread Jon S. Berndt
0x0019 in ~logstream (this=0xbd3d3e8) at logstream.hxx:237 237 { (gdb) where #0 0x0019 in ~logstream (this=0xbd3d3e8) at logstream.hxx:237 #1 0x0812a812 in ~FGFDMExec (this=0xbd3d3e8) at FGFDMExec.cpp:173 #2 0x08113095 in ~FGJSBsim (this=0xb4b39e0) at JSBSim.cxx:308 What on

[Flightgear-devel] Wing motion

2005-12-18 Thread Jon S. Berndt
Here's one I'm throwing out simply for discussion, and because it's occurred to me several times in the past: Would it be possible to change the visual appearance of wing flex during flight? I thought it might be interesting to give the wing an amount of flex dependent on load factor and wing

RE: [Flightgear-devel] C310 Update

2005-12-18 Thread Jon S. Berndt
Move the CG forward a bit, at least a 10--15. (the correct CG location should be taken from the type certificate, which I haven't been able to find on a quick google) The plane flies a lot better then. (better stability and cruise alpha, when it's not flying on the stabiliser) This also puts

[Flightgear-devel] STL errors?

2005-12-13 Thread Jon S. Berndt
In trying to rebuild FlightGear under Cygwin, I'm getting all sorts of errors now when I get to compiling the older JSBSim code, beginning with FGDeadband.cpp. There errors are these: stl_deque.h:446: error: expected unqualified-id before '(' token deque.tcc:699: error: expected unqualified-id

RE: [Flightgear-devel] STL errors?

2005-12-13 Thread Jon S. Berndt
Do you have NOMINMAX defined and #ifdef HAVE_CONFIG_H #include config.h #endif at the beginning of every .cpp/.cxx file ? -Fred Not as far as I know. But this is straight from an unaltered current CVS distribution of FlightGear. I've got the very latest compilers/tools from Cygwin, so I

Re: [Flightgear-devel] Re: JSBSim broken?

2005-12-11 Thread Jon S Berndt
On Sun, 11 Dec 2005 15:02:13 +0100 Melchior FRANZ [EMAIL PROTECTED] wrote: * Dave Culp -- Sunday 11 December 2005 05:05: The reverser method has changed. You set the reverser now by adjusting the /fdm/jsbsim/propulsion/engine[x]/reverser-angle [...] The property /engines/engine[x]/Reverser

RE: [Flightgear-devel] Re: JSBSim broken?

2005-12-11 Thread Jon S. Berndt
I'm convinced Melchior aimed at pointing out that FDM-specific names for non-FDM-specific properties don't belong into FlightGear. FlightGear supports more than just one FDM. There are conventions for where to find properties. Engine stuff is in /engines/. There are setups relying on

[Flightgear-devel] OpenGL and new video drivers

2005-12-01 Thread Jon S Berndt
I just installed a new video card (eVGA GeForce 6800) on my Windows 2000 box and after installing the drivers I find that OpenGL applications crash. I've uninstalled (in safe mode) and reinstalled (in safe mode) earlier versions of the drivers, but no luck, so far. I am trying to find the

Re: [Flightgear-devel] b1900d FDM

2005-01-18 Thread Jon S Berndt
On Tue, 18 Jan 2005 16:47:04 + Dave Martin [EMAIL PROTECTED] wrote: Is anyone currently working on the b1900d FDM? The reason I ask is that while the model is gorgeous, the FDM is relatively broken. I know there is a YASim model, and I've wanted to work on a JSBSim model for some time, but

[Flightgear-devel] OT: Huygens

2005-01-14 Thread Jon S Berndt
This is a bit off-topic for FlightGear-devel, but I thought it might be worth mentioning that the first pictures from the Huygens probe have returned from Saturn's moon Titan via Cassini relay. You can see them here: www.spaceflightnow.com -and- http://www.esa.int/esaCP/index.html The overall

Re: [Flightgear-devel] Is this usefull for flightgear/jsbsim?

2005-01-12 Thread Jon S Berndt
On Wed, 12 Jan 2005 22:10:47 +0100 [EMAIL PROTECTED] (Wolfram Kuss) wrote: Erik wrote: This still might be useful if you can get all the moments and coefficients from it. Then you would be able to create a JSBSim configuration file from the model geometry. The idea of using the gfx model you

[Flightgear-devel] Flightgear in AIAA's, Aerospace America

2005-01-11 Thread Jon S Berndt
In this month's AIAA monthly publication, Aerospace America, FlightGear receives a mention in the Systems and Software column. Here is a link to that article: www.aiaa.org/aerospace/images/articleimages/pdf/systemsjanuary05.pdf This is the URL for Aerospace America:

Re: [Flightgear-devel] Happy New Year

2005-01-05 Thread Jon S Berndt
On Wed, 05 Jan 2005 10:17:53 -0600 Curtis L. Olson [EMAIL PROTECTED] wrote: It's the start of a new year, so I thought it might be fun to look back on 2004 and recall some interesting FlightGear facts and events, and then look forward a bit to the upcoming year. Heh. I have been meaning to post

[Flightgear-devel] EasyXML problem?

2004-12-28 Thread Jon S Berndt
I've encountered an unexpected problem with the class I have derived from EasyXML. In one of the configuration files I have, the following lines are present: function NAME=aero/coefficient/Cndr descriptionYaw moment due to rudder/description product

Re: [Flightgear-devel] control surface normalization

2004-12-17 Thread Jon S Berndt
On Fri, 17 Dec 2004 15:26:26 +0100 Gordan Sikic [EMAIL PROTECTED] wrote: Hi Jon, Once more, do not make general statements, based on a few examples. Jon wrote: One hundred percent of the control law diagrams ... emphasisI have seen/emphasis that include pilot inputs use force. There are _many_

Re: [Flightgear-devel] control surface normalization

2004-12-17 Thread Jon S Berndt
On Fri, 17 Dec 2004 10:07:47 -0600 Curtis L. Olson [EMAIL PROTECTED] wrote: Jon, the problem is: how does the interface know how to normalize the control surface positions? Where does it read the maximum limits from? The FDM is really the only piece that is going to know this information.

Re: [Flightgear-devel] control surface normalization

2004-12-17 Thread Jon S Berndt
On Fri, 17 Dec 2004 10:05:04 -0600 Curtis L. Olson [EMAIL PROTECTED] wrote: The FDM may choose to carry along with that abstraction (which makes sense) because you are concerned with getting the right performance when the lever is in the 30 degree position. It all works out in the end, but

Re: [Flightgear-devel] CVS Error?

2004-12-17 Thread Jon S Berndt
On Fri, 17 Dec 2004 11:35:24 -0800 John Wojnaroski [EMAIL PROTECTED] wrote: That was it. The other modules explicitly call out the include directive and ifdef, but they appear to be excluded in the JSBSim files ? seems like something is missing/mis-set on my system , if others are not having

Re: [Flightgear-devel] control surface normalization

2004-12-17 Thread Jon S Berndt
On Fri, 17 Dec 2004 21:51:56 - Vivian Meazza [EMAIL PROTECTED] wrote: How do FDMs handle Fowler flaps? i.e. the first part of the action extends the flap rearwards without any rotation, acting only to increase wing area, then for the rest of the action rotate downwards? Easy enough to 3d

Re: [Flightgear-devel] control surface normalization

2004-12-17 Thread Jon S Berndt
On Fri, 17 Dec 2004 22:59:35 - Vivian Meazza [EMAIL PROTECTED] wrote: Lee Elliott wrote [snip...] How do FDMs handle Fowler flaps? i.e. the first part of the action extends the flap rearwards without any rotation, acting only to increase wing area, then for the rest of the action

Re: [Flightgear-devel] control surface normalization

2004-12-16 Thread Jon S Berndt
On Thu, 16 Dec 2004 11:15:52 -0800 Richard Harke [EMAIL PROTECTED] wrote: A rotation whether in degrees or radians only makes sense if the axis of rotation is specified. This would have to be on a per aircraft basis. Also I'm sure that many if not most control surfaces do not simply rotate

Re: [Flightgear-devel] control surface normalization

2004-12-16 Thread Jon S Berndt
On Thu, 16 Dec 2004 18:21:24 +0100 Gordan Sikic [EMAIL PROTECTED] wrote: I have seen (and I've seen more than few) control law diagrams taking some generalized input (0-1 range), taking target speed, or attitude, or something,... but havent seen any, taking as a input force that pilot has to

Re: [Flightgear-devel] control surface normalization

2004-12-16 Thread Jon S Berndt
On Thu, 16 Dec 2004 20:47:03 - Jim Wilson [EMAIL PROTECTED] wrote: Jon's concern is quite valid, but there are problems. As I work through these concepts in my mind, I can see that although the current method sounds more complicated for the 3D animator, having to deal with the real

Re: [Flightgear-devel] control surface normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 12:01:23 -0500 Norman Vine [EMAIL PROTECTED] wrote: It is realy quite simple you either have 1) an abstract class with 'Normalized units' class Control or 2) a bunch of specalized classes class Angle_Controller class Toggle_Controller class Percentage_Controller etc

Re: [Flightgear-devel] control surface normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 12:30:25 -0500 Norman Vine [EMAIL PROTECTED] wrote: Curtis L. Olson writes: I think we are limiting the discussion here to only flying control surface positions, i.e. As you point out those are only a small subset of the Control class abstaction. So specialize these if

Re: [Flightgear-devel] control surface normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 11:16:32 -0800 John Wojnaroski [EMAIL PROTECTED] wrote: And then there are slats that deploy as a function of airspeed/AOA; e.g; Sabreliners This is irrelevant, also - at least for JSBSim. In this case, the slats would be automatically deployed as directed by the flight

[Flightgear-devel] Re: FCS normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 14:51:07 -0500 Norman Vine [EMAIL PROTECTED] wrote: Jon S Berndt writes: This is irrelevant, also - at least for JSBSim. That is an excellent observation FGFS is more then JSBSim though :-) Norman Absolutely. And JSBSim is used by more than FlightGear - which leads to part

[Flightgear-devel] Re: FCS normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 14:51:07 -0500 Norman Vine [EMAIL PROTECTED] wrote: Jon S Berndt writes: This is irrelevant, also - at least for JSBSim. That is an excellent observation FGFS is more then JSBSim though :-) Norman Absolutely. And JSBSim is used by more than FlightGear - which leads to part

Re: [Flightgear-devel] control surface normalization

2004-12-15 Thread Jon S Berndt
Curt wrote: But Jon, this statement seems to run counter to your overall argument. Slats at least on many of the aircraft I've seen deploy linearly. In other words they are on some sort of rail mechanism and slide out away from the leading edge of the wing in a linear motion. They aren't

Re: [Flightgear-devel] Real Piper Data

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 09:10:03 -0500 David Megginson [EMAIL PROTECTED] wrote: A Piper owner trying to have is PA-28-201 (Arrow) repaired managed to get this concrete information from Piper: Dear Sir: There is not an off-set of the vertical fin or the stabilator on the PA28R-201. The fin is should

Re: [Flightgear-devel] control surface normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 10:41:27 -0500 Norman Vine [EMAIL PROTECTED] wrote: Jim Wilson writes: And the Simgear 3D animation code is all about taking those normalized values and translating them to a representation of degrees movement. On the surface, this doesn't make sense to me either. I can

Re: [Flightgear-devel] control surface normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 17:21:13 - Vivian Meazza [EMAIL PROTECTED] wrote: A quick search revealed that most, if not all, the 3d models in the current inventory use normalized values for animating the control surfaces. See, this further raises a red flag for me. How does the 3D model know how

Re: [Flightgear-devel] control surface normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 18:22:30 - Vivian Meazza [EMAIL PROTECTED] wrote: There are several points here. 1. The fact is that most 3d (I think all, but I haven't checked) rightly or wrongly already use normalized values. It would be a significant task to change. Agreed. This is a consideration.

Re: [Flightgear-devel] control surface normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 14:51:07 -0500 Norman Vine [EMAIL PROTECTED] wrote: Jon S Berndt writes: This is irrelevant, also - at least for JSBSim. That is an excellent observation FGFS is more then JSBSim though :-) Norman Absolutely. And JSBSim is used by more than FlightGear - which leads to part

Re: [Flightgear-devel] control surface normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 14:51:07 -0500 Norman Vine [EMAIL PROTECTED] wrote: Jon S Berndt writes: This is irrelevant, also - at least for JSBSim. That is an excellent observation FGFS is more then JSBSim though :-) Norman Absolutely. And JSBSim is used by more than FlightGear - which leads to part

Re: [Flightgear-devel] control surface normalization

2004-12-15 Thread Jon S Berndt
On Wed, 15 Dec 2004 14:51:07 -0500 Norman Vine [EMAIL PROTECTED] wrote: Jon S Berndt writes: This is irrelevant, also - at least for JSBSim. That is an excellent observation FGFS is more then JSBSim though :-) Norman Absolutely. And JSBSim is used by more than FlightGear - which leads to part

[Flightgear-devel] Tracking camera

2004-12-14 Thread Jon S Berndt
Does FlightGear have a tracking camera view at this time? What I am getting at is this: say I have a vehicle that I want to fly in a scripted manner. Can I select a camera that will automatically track the vehicle as it flies? Jon ___

[Flightgear-devel] CVS and file moves

2004-12-08 Thread Jon S Berndt
Is there a clean way to move files in a CVS repository from one directory to another for a reorganization? Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel

Re: [Flightgear-devel] Solaris/GPU recommendations sought!

2004-12-03 Thread Jon S Berndt
On Fri, 3 Dec 2004 16:03:13 +0100 [EMAIL PROTECTED] (Gerhard Wesp) wrote: Primary objective is to run FlightGear rock solidly (need it as a front end/testing environment) for my own FDM). Why your own FDM? Don't get me wrong - I think there are a lot of reasons why someone would want to write

Re: [Flightgear-devel] Aircraft directory structure

2004-11-22 Thread Jon S Berndt
On Mon, 22 Nov 2004 15:02:09 -0600 Curtis L. Olson [EMAIL PROTECTED] wrote: How hard would it be to allow aircraft to live in an arbitrary structure underneath data/Aircraft? From a JSBSim FDM point of view, I've been giving this some thought with respect to standalone JSBSim, as well. There

Re: [Flightgear-devel] Aircraft directory structure

2004-11-22 Thread Jon S Berndt
On Mon, 22 Nov 2004 15:29:36 -0600 Curtis L. Olson [EMAIL PROTECTED] wrote: Jon S Berndt wrote: I don't think we need to kill ourselves trying to be overly flexible. I think it's worth having a central repository of commonly used items (engines, instruments, etc.) An aircraft could refer

[Flightgear-devel] [OT] Keyhole

2004-11-18 Thread Jon S Berndt
The Ultimate Interface to the Planet: http://www.keyhole.com/ Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d

[Flightgear-devel] JSBSim Scripts in FlightGear

2004-11-08 Thread Jon S Berndt
I got a request to implement something I've been considering implementing for some time, anyhow. JSBSim has the ability to run scripted flights. Scripts are composed in an XML-format command file. This works quite well for JSBSim in a standalone mode. I have yet to try to implement this in

Re: [Flightgear-devel] JSBSim Scripts in FlightGear

2004-11-08 Thread Jon S Berndt
I would go the other way around, implement FlightGear's FDM socket communication protocol for JSBSim and run it as a stand-alone FDM that feeds FlightGear with it's data. Erik I like this idea a lot - but I'm not quite sure how to proceed on this. Do you have any ideas to throw out on how this

Re: [Flightgear-devel] Plea for help: geometry/trigonometry problem

2004-11-04 Thread Jon S Berndt
-atan2(-phi,theta) This looks *very* strange. An arc tangent of a quotient of angles?? Although it works out dimension-wise, I've never seen a quotient of angles in any formula. Cheers -Gerhard Think of them as distances, really. It was meant to be the X and Y component of the rotated Z axis

Re: [Flightgear-devel] Re: Plea for help: geometry/trigonometry problem

2004-11-03 Thread Jon S Berndt
On Wed, 3 Nov 2004 14:05:59 -0500 David Megginson [EMAIL PROTECTED] wrote: I've thought of a simpler way to approach this problem. Let's say that I have a plane and the three Euler angles of rotation, phi, theta, and psi (roll, pitch, and yaw). Given those three angles, I'd like to determine

Re: [Flightgear-devel] Re: Plea for help: geometry/trigonometry problem

2004-11-03 Thread Jon S Berndt
On Wed, 03 Nov 2004 15:28:26 -0600 Curtis L. Olson [EMAIL PROTECTED] wrote: I think you're on the right track. I think you want to determine the orientation of the aircraft body Z axis w.r.t. the local vertical axis. That can tell you both the magnitude and direction of the most vertical

Re: [Flightgear-devel] Plea for help: geometry/trigonometry problem

2004-11-03 Thread Jon S Berndt
On Wed, 3 Nov 2004 16:47:37 -0500 David Megginson [EMAIL PROTECTED] wrote: What does arctan(-phi/theta) give you? Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel

Re: [Flightgear-devel] Plea for help: geometry/trigonometry problem

2004-11-03 Thread Jon S Berndt
On Wed, 3 Nov 2004 16:47:37 -0500 David Megginson [EMAIL PROTECTED] wrote: After having scribbled for a LITTLE WHILE on the back of an envelope ;-) I am thinking that what you want is this: -atan2(-phi,theta) but I'll have to play a little bit more. I think this would give you the angle about

Re: [Flightgear-devel] Plea for help: geometry/trigonometry problem

2004-11-03 Thread Jon S Berndt
On Wed, 03 Nov 2004 16:02:19 -0600 Jon S Berndt [EMAIL PROTECTED] wrote: On Wed, 3 Nov 2004 16:47:37 -0500 David Megginson [EMAIL PROTECTED] wrote: After having scribbled for a LITTLE WHILE on the back of an envelope ;-) I am thinking that what you want is this: -atan2(-phi,theta) Maybe I am

Re: [Flightgear-devel] Plea for help: geometry/trigonometry problem

2004-11-03 Thread Jon S Berndt
More: theta phi heading magnitude 45.00 0.000.0045.00 45.00 -45.00 45.0075.00 0.00 -45.00 90.0045.00 -45.00 -45.00 135.0075.00 -45.00 0.00 -180.0045.00 -45.00 45.00 -135.0075.00 0.00 45.00 -90.0045.00 45.00 45.00 -45.0075.00 45.00

Re: [Flightgear-devel] Multiheaded video cards?

2004-11-02 Thread Jon S Berndt
On Tue, 02 Nov 2004 12:37:40 -0600 Curtis L. Olson [EMAIL PROTECTED] wrote: Has anyone played around with any of these options who can report success or failure or something in between? What kind of performance are you getting? I recall a couple years ago I was running two 17 monitors off of a

[Flightgear-devel] Command line debugger

2004-11-01 Thread Jon S Berndt
Is anyone aware of a command line C++ code debugger? Particularly one that runs under IRIX? Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d

Re: [Flightgear-devel] Command line debugger

2004-11-01 Thread Jon S Berndt
On Mon, 01 Nov 2004 21:09:39 +0100 Erik Hofman [EMAIL PROTECTED] wrote: Jon S Berndt wrote: Is anyone aware of a command line C++ code debugger? Particularly one that runs under IRIX? If you mean something like gdb for Linux: xdb Erik Has anyone used ddd? Does KDevelop compile under IRIX? Can

Re: [Flightgear-devel] AI carrier

2004-10-27 Thread Jon S Berndt
On Wed, 27 Oct 2004 15:18:46 -0500 David Culp [EMAIL PROTECTED] wrote: Some notes on making an AI carrier. The FDM will have to be changed to allow the aircraft to sit on a deck without the deck sailing away from under it. The difference between the aircraft's and carrier's velocity vectors

[Flightgear-devel] [OT] Simulation and Air Disasters

2004-10-26 Thread Jon S Berndt
Interesting story about the Airbus crash in a New York suburb in November of 2001: http://www.cnn.com/2004/US/10/26/ntsb.flight587.ap/index.html Benzon also said that investigators found that American Airlines improperly trained its pilots to use the aircraft's rudder while recovering from

[Flightgear-devel] Trim quotes

2004-10-21 Thread Jon S Berndt
Would it be grumpy of me to suggest that we try a little harder to trim quotes when replying with quotes? I've noticed that there are several emails today with 100 to 200 lines of quoted material, followed by anywhere from a few lines to ten or so. Over time, this stuff builds up... Jon

Re: [Flightgear-devel] how to interface with flightgear

2004-10-20 Thread Jon S Berndt
On Thu, 21 Oct 2004 01:26:54 +0800 [EMAIL PROTECTED] wrote: I am working on a autopilot project and we need a flight simulator to prove our control method before use it on a real aircraft. Is there any interface to get the attitude of aircraft from and send control data to flightgear. I

[Flightgear-devel] Validating XML parser

2004-09-30 Thread Jon S Berndt
I've been wondering about easyXML, if it can be modified to support validation against a DTD? Since it is built on top of eXpat - and I believe eXpat _can_ be compiled to provide validation - is this just a matter of proper compilation of the eXpat library? I ask because it is becoming clear

[Flightgear-devel] 737 autoflight modeling

2004-09-24 Thread Jon S Berndt
Regarding a 737 autopilot, I thought I'd write some comments, here. Having discussed with Dave C. recently some of the autoflight and/or flight management features of the 737NG airliner, I have investigated using the JSBSim components to model some aspects of these systems. I found that these

Re: [Flightgear-devel] 737 autoflight modeling

2004-09-24 Thread Jon S Berndt
On Fri, 24 Sep 2004 19:55:54 +0200 Boris Koenig [EMAIL PROTECTED] wrote: Also, regarding the whole terrorist issue that you mentioned: terrorists usually have the funding available to really use *professional tools*, so the 9/11 terrorists did not only fool around with a version of Micro$oft's

Re: [Flightgear-devel] Re: Simgear::EasyXML - minimum file set

2004-09-01 Thread Jon S Berndt
On Wed, 01 Sep 2004 11:54:08 -0700 Alex Romosan [EMAIL PROTECTED] wrote: you need to have the expat library installed (+ the header files) but then you can use just easyxml.cxx from simgear with the following patch applied: --- easyxml.cxx 29 Jul 2004 08:30:10 - 1.4 +++ easyxml.cxx 1 Sep

[Flightgear-devel] Re: [Jsbsim-devel] Re: Simplot compilation fails

2004-08-20 Thread Jon S Berndt
On Fri, 20 Aug 2004 15:58:29 +0200 Steven Beeckman [EMAIL PROTECTED] wrote: I've checked the latest CVS snapshot from SimGear.org, and even there I find 2 readXML-methods in easyxml.hxx, so that won't be the problem. I've commented out the readXML-method with 3 arguments in easyxml.hxx, which

Re: [Flightgear-devel] Re: [Jsbsim-devel] Re: Simplot compilation fails

2004-08-20 Thread Jon S Berndt
On Fri, 20 Aug 2004 09:37:29 -0500 Jon S Berndt [EMAIL PROTECTED] wrote: to solve this. I'll cross-post to flightgear-devel - someone there may have a clue. Jon Disregard this - I goofed. Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http

[Flightgear-devel] Loading an XML file using EasyXML

2004-08-20 Thread Jon S Berndt
Can someone tell me what the process is once a file has been opened and is being parsed by EasyXML? What do the callbacks do ... what is the standard procedure for reading in the attibutes and elements and data? Jon ___ Flightgear-devel mailing list

Re: [Flightgear-devel] Loading an XML file using EasyXML

2004-08-20 Thread Jon S Berndt
On Fri, 20 Aug 2004 20:55:18 +0200 Mathias Fröhlich [EMAIL PROTECTED] wrote: On Freitag, 20. August 2004 18:48, Jon S Berndt wrote: Can someone tell me what the process is once a file has been opened and is being parsed by EasyXML? What do the callbacks do ... what is the standard procedure

Re: [Flightgear-devel] Loading an XML file using EasyXML

2004-08-20 Thread Jon S Berndt
On Fri, 20 Aug 2004 21:40:28 +0200 Mathias Fröhlich [EMAIL PROTECTED] wrote: On Freitag, 20. August 2004 21:10, Jon S Berndt wrote: But also an aircraft is built like such a tree. The top node is the Some aircraft are even built OUT OF trees. ;-) aircraft itself. This one has

Re: [Flightgear-devel] Loading an XML file using EasyXML

2004-08-20 Thread Jon S Berndt
On Fri, 20 Aug 2004 22:01:43 +0200 Frederic Bouvier [EMAIL PROTECTED] wrote: I think Jon wants to preserve the current JSBsim syntax and not use the property syntax. -Fred Well, perhaps. The thing is, certain items that would be parsed from the configuration file, such as landing gear, aero

Re: [Flightgear-devel] Re: yasim + bo105 + vrp + @#%$#@ == argh!

2004-08-04 Thread Jon S Berndt
On Wed, 4 Aug 2004 23:04:16 +0200 Melchior FRANZ [EMAIL PROTECTED] wrote: Good idea. I'll try that. Thanks. Get some sleep, first !! :-) Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel

Re: [Flightgear-devel] Data source battle?

2004-08-02 Thread Jon S Berndt
Jim Wilson wrote: If it wasn't for the great work on JSBsim and YASim we'd have very few aircraft. But I think those config files, along with the source code that ends up interpreting and processing them, both make up the FDMs. There is considerable skill and effort involved in producing

[Flightgear-devel] Properties and speed of lookup

2004-07-30 Thread Jon S Berndt
Properties = text strings bound to variables or access methods. Property manager maintains a list of these. How is the lookup done when a property value is retrieved (assuming the desired property to be looked up is referenced by the text string)? I wondered if an STL map is used? Jon

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-29 Thread Jon S Berndt
On Thu, 29 Jul 2004 15:01:28 - Jim Wilson [EMAIL PROTECTED] wrote: Jon Berndt wrote: One more thing: think of a baseball or better yet a lightweight ball. How do those things curve? Well Jim's make it up as you go along Physics manual says that there is greater pressure against the air

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-29 Thread Jon S Berndt
On Thu, 29 Jul 2004 10:34:16 -0500 Curtis L. Olson [EMAIL PROTECTED] wrote: Ok, then how do you explain a frisbee that can curve either way, even though it's always thrown with the same direction of spin. And please include the coriolis effect in your explanation (now that it is implimented

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-29 Thread Jon S Berndt
On Thu, 29 Jul 2004 19:37:08 +0200 Boris Koenig [EMAIL PROTECTED] wrote: I like it when people share their valuable experiences ... :-) So, the next time I'm there I'll be careful ! Why? You won't hit anything! :-) Jon ___ Flightgear-devel mailing list

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-29 Thread Jon S Berndt
On Thu, 29 Jul 2004 19:38:44 +0200 Erik Hofman [EMAIL PROTECTED] wrote: (Now I start to wonder why we always smash our probes on the surface of Mars). NASA does it by design. (Well ... except for the Mars Polar Lander.) :-) Jon ___ Flightgear-devel

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-28 Thread Jon S Berndt
On Wed, 28 Jul 2004 17:25:31 - Jim Wilson [EMAIL PROTECTED] wrote: Richard Bytheway said: Well as a physicist (but with no formal aeronautical education), I always think of it as the wing is pushing air down, which causes an equal and opposite force (to quote Newton) of the air pushing the

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-28 Thread Jon S Berndt
On Tue, 28 Jun 2005 19:20:17 +0100 SGMINFO [EMAIL PROTECTED] wrote: David Megginson wrote: I'm getting seriously out of my depth here, since I didn't even take high school physics... Just a lurker at present until I can find a way to contribute more usefully but try this...

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-28 Thread Jon S Berndt
On Wed, 28 Jul 2004 14:15:04 -0400 Norman Vine [EMAIL PROTECTED] wrote: This is a 100 year old argument :-) http://hyperphysics.phy-astr.gsu.edu/hbase/fluids/airfoil.html If you really want to know read everything you can wriiten by Koukowskii and Prandtl Is light a wave or a particle? :-)

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-28 Thread Jon S Berndt
On Wed, 28 Jul 2004 14:52:24 -0400 David Megginson [EMAIL PROTECTED] wrote: The important thing to note is that the airflow *above* the wing also curves down, not just the airflow below it. That is why, even with the same incidence angle, the hstab sees a different angle of attack in the

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-28 Thread Jon S Berndt
On Wed, 28 Jul 2004 22:56:59 +0200 Erik Hofman [EMAIL PROTECTED] wrote: This is exactly the reason why pressure is build up underneath the wing (pushing the airfoil up on air molecules == force). No, not really. See: http://www.av8n.com/how/htm/airfoils.html#sec-consistent Excerpt: Of course,

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-28 Thread Jon S Berndt
On Wed, 28 Jul 2004 23:28:55 +0200 Erik Hofman [EMAIL PROTECTED] wrote: Jon S Berndt wrote: No, not really. See: http://www.av8n.com/how/htm/airfoils.html#sec-consistent Try this for a start: An airflow over the wing is causing the downwash at the end of the airfoil. The airflow below the wing

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-28 Thread Jon S Berndt
On Wed, 28 Jul 2004 23:55:09 +0200 Erik Hofman [EMAIL PROTECTED] wrote: Jon S Berndt wrote: That's because it's _mostly_ (or entirely) the sucking action above the wing that contributes the most to lift. No, that is the *result* of lift, not the *cause*. Erik No, you're mixing up cause

Re: [Flightgear-devel] Taildragger takeoff and landing

2004-07-28 Thread Jon S Berndt
On Wed, 28 Jul 2004 23:16:05 +0100 Lee Elliott [EMAIL PROTECTED] wrote: Although it might not be accurate in my model, the B-52 wing is set at six deg incidence, and while it does fly a little nose-down in some circumstances, six deg worth would be worrying;) Heh - not that I haven't seen

Re: [Flightgear-devel] Success

2004-07-23 Thread Jon S Berndt
On Fri, 23 Jul 2004 16:05:13 +0100 Al West [EMAIL PROTECTED] wrote: On Friday 23 July 2004 15:21, Jon Berndt wrote: I'll stop whining, now. ;-) I was able to build simgear and flightgear with the OpenAL libs. I've built it fine too - acutally being able to run it is a different matter. Is it

Re: [Flightgear-devel] Visual Reference Point scheme works

2004-07-23 Thread Jon S Berndt
On Fri, 23 Jul 2004 16:07:17 - Jim Wilson [EMAIL PROTECTED] wrote: It has been a while since this feature was added, but I thought Jon might like to know that using his VRP feature I've succeeded in positioning the Cessna 310 (U-3A) visual model identically under both JSBSim and YASim

Re: [Flightgear-devel] Prerelease 2 and traffic manger

2004-07-22 Thread Jon S Berndt
On Thu, 22 Jul 2004 20:17:34 +0200 Durk Talsma [EMAIL PROTECTED] wrote: What kind of problems did you see? I've sent a lot of changes to Erik about two weeks ago. That update fixed a lot of stuff, including the autopilot, which makes it a lot easier to fly. The CVS version is a little heavy

Re: [Flightgear-devel] Latest OpenAL for new build?

2004-07-22 Thread Jon S Berndt
On Thu, 22 Jul 2004 12:36:40 -0700 John Wojnaroski [EMAIL PROTECTED] wrote: Curtis L. Olson wrote: John Wojnaroski wrote: Trying a build of the latest pre-0.9.5 release... SimGear compile fails on sample_openal implicit declaration of alGetsourcei(...) and alutLoadWAVFile() Searched the include

Re: [Flightgear-devel] Difficulty with building under Cygwin

2004-07-19 Thread Jon S Berndt
On Mon, 19 Jul 2004 18:07:43 +0100 Vivian Meazza [EMAIL PROTECTED] wrote: I've just downloaded the current cvs version of SimGear and FlightGear. They both compile under Cygwin straight out of the box. I would suppose that you have a problem with your path. Possibly, but I am using the same

Re: [Flightgear-devel] status of aircraft carrier

2004-07-08 Thread Jon S Berndt
On Thu, 8 Jul 2004 14:03:14 +0100 Vivian Meazza [EMAIL PROTECTED] wrote: Jon Berndt wrote Sent: 08 July 2004 13:29 To: FlightGear developers discussions Subject: RE: [Flightgear-devel] status of aircraft carrier In my day they consisted of a pulley system forcing hydraulic fluid through

Re: [Flightgear-devel] Re: Concorde

2004-07-07 Thread Jon S Berndt
copy direct.xml from some other engine directory to Aircraft/Concorde/Engines. it worked for me. On Wed, 7 Jul 2004 13:15:42 - Jim Wilson [EMAIL PROTECTED] wrote: Just in case someone, in the future, searches the archives for a solution to this particular error... This is NOT a good thing

Re: [Flightgear-devel] JSBSim compile failing on Redhat 7.3

2004-07-07 Thread Jon S Berndt
On Wed, 7 Jul 2004 15:30:14 - Jim Wilson [EMAIL PROTECTED] wrote: There doesn't seem to be support for the std::numeric_limits references added in the June update. Can we work around this? e.g.: In file included from FGFCSComponent.h:46, from FGDeadBand.h:40,

Re: [Flightgear-devel] JSBSim compile failing on Redhat 7.3

2004-07-07 Thread Jon S Berndt
On Wed, 7 Jul 2004 17:35:31 - Jim Wilson [EMAIL PROTECTED] wrote: Mathias Fröhlich said: On Mittwoch, 7. Juli 2004 17:30, Jim Wilson wrote: There doesn't seem to be support for the std::numeric_limits references added in the June update. Can we work around this? Done in JSBSim's cvs.

Re: [Flightgear-devel] status of aircraft carrier

2004-07-07 Thread Jon S Berndt
On Wed, 7 Jul 2004 19:12:11 +0200 Mathias Fröhlich [EMAIL PROTECTED] wrote: On Mittwoch, 7. Juli 2004 18:59, Andy Ross wrote: The only special hardware on the carrier are the arresting wires and catapults. It would be easier to just model these and let generic intersection code handle the deck

Re: [Flightgear-devel] status of aircraft carrier

2004-07-07 Thread Jon S Berndt
On Wed, 07 Jul 2004 15:12:05 -0400 David Megginson [EMAIL PROTECTED] wrote: Once we support ground reactions with a moving surface (like the deck of a ship), why not just model the catapult as a faster moving surface? That would supply only a sliding friction force to the tires, which would be

Re: [Flightgear-devel] status of aircraft carrier

2004-07-07 Thread Jon S Berndt
On Wed, 7 Jul 2004 22:50:40 +0100 Vivian Meazza [EMAIL PROTECTED] wrote: Hmm, bolted? Don't forget that the cat force is adjusted for the aircraft type and launch weight. It would have to be modelled as a spring force acting on the nose gear to be correct. Even that's not quite good enough,

Re: [Flightgear-devel] L1011-500

2004-07-06 Thread Jon S Berndt
On Tue, 6 Jul 2004 20:09:38 +0200 Durk Talsma [EMAIL PROTECTED] wrote: Just a few comments below, since I also ran into similar issues creating and updating the MD-11 aero file. I also had problems using the FG_TURBINE and switched to FG_SIMTURBINE, is this a good idea? Yes, this reflects a

Re: [Flightgear-devel] L1011-500

2004-07-02 Thread Jon S Berndt
On Fri, 2 Jul 2004 22:46:14 +0100 [EMAIL PROTECTED] wrote: The L1011-500 uses the Rolls-Royce RB211-524B take a look here for details: http://www.aircraftenginedesign.com/TableB3.html I have committed to JSBSim CVS an RR RB211-524 engine. Jon ___

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