[Flightgear-devel] sprintf usage
Gentlemen, Is there any reason not to use snprintf instead of sprintf? In order to investigate possible memory corruption errors, I changed a few in SimGear, and just found there are about another 250 of these in FlightGear. Unless there's a compelling reason, I'd like to change those as well, and commit this. Cheers, Durk - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] Century IIB, Century IIII, and Altimatic IIIc 3d autopilots submitted to cvs
Hi all, Autopilot changes to the pa24 and SenecaII: For the last 5 weeks, I have been working with Torsten Dreyer to implement accurate models of the actual autopilots used by the pa24 and SenecaII. Friday morning, I sent 4 patches to Andy Ross for submission to cvs that implement these three autopilots in a manner similar to the kap140 implementation. One patch puts the nasal models in Aircraft/Generic. Another patch puts the .ac models, the model xml, and the panel xml files in Instruments 3d. See the README.txt files in Aircraft/Instruments-3d/Century-IIB and Aircraft/Instruments-3d/Century-III for how to add these autopilots to other aircraft as well as where to get pdf files for Pilots Operating Handbook for these autopilots. Two other patches modify the pa24 and SenecaII to use these autopilots. The Altimatic IIIc is a modification of the Century III autopilot that uses the hsi pointer (both ends) in place of the DG heading bug vlaue that is referenced in the Century III documentation so that other than in heading mode, the heading bug is ignored. The SenecaII uses the Altimatic IIIc. With these patches, the pa24 now has two -set.xml files. The pa24-250-CIIB-set.xml file replaces the kap140 with the 2 axis Century IIB autopilot as in the real N7764P. The pa24-250-set.xml file replaces the kap140 with the 3 axis Century III autopilot. The autopilot config xml files are in the respective Systems folders. Check out these realistic autopilot implementations once they are in cvs. Cheers, Dave Perry - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] oil platform...
On Wednesday 03 October 2007 19:05, SydSandy wrote: Log Message: Oil platform for helicopter practice I was thinking about this and thought of a ship with a helo deck which could be anything from a yacht to cargo ships and ships in the Niimitz Strike Force or a Coast Guard type and then I thought of an Amphibious assault type as they have a large deck and support helo's, Harriers and the Osprey. http://en.wikipedia.org/wiki/Amphibious_assault_ship#List_of_amphibious_assault_ship_types Robert - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions
While optimizing the aitopilot config files for the Century IIB and III autopilots for the pa24 and the Altimatic IIIc for the SenecaII, a significant difference between the values of parameters (gains in particular) that give non oscillatory behavior in yasim and jsbsim became very apparent. I had to completely turn off turbulence to get stability without significant overshoot in SenecaII/Systems/ALTIMATICIII.xml. With the values submitted to cvs, the Seneca still has a wing rock in LOC REV and LOC modes with the default weather that has some turbulence. The pa24 with the same values is as solid as a rock with the default turbulence all the way down the glide slope. With the turbulence zero, both behave the same. The SenecaII wing rock with light turbulence appears to result from a very exaggerated adverse aileron yaw. So I did the same experiment with the c172p and pa28-140 which both use the kap140. With the default turbulence, the c172p oscillates so bad that you cannot complete the approach with the LOC needle going full stop to full stop near the runway. The pa28-161 (also yasim) is as solid as a rock all the way down the glide slope with light to moderate turbulence. If you watch the oscillation for either jsbsim model, you should note that when the yoke is rotating counter clockwise, the nose is yawing right and then finally swings back left, as would be expected with extreme adverse aileron yaw. Most high performance AC show very little AAY except in significant slow flight. I would not expect that small aileron deflections should move the nose counter to the roll in a SenecaII or pa24. Two questions: 1. Have others noticed this difference between jsbsim and yasim? 2. Can this adverse aileron yaw be toned down in jsbsim? Regards, Dave Perry - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] oil platform...
On lun 8 octobre 2007, Robert Black wrote: On Wednesday 03 October 2007 19:05, SydSandy wrote: Log Message: Oil platform for helicopter practice I was thinking about this and thought of a ship with a helo deck which could be anything from a yacht to cargo ships and ships in the Niimitz Strike Force or a Coast Guard type and then I thought of an Amphibious assault type as they have a large deck and support helo's, Harriers and the Osprey. http://en.wikipedia.org/wiki/Amphibious_assault_ship#List_of_amphibious_ass ault_ship_types Robert Yes , on the French side, the Mistral is part of my huge french Navy project Regards -- Gérard http://perso.orange.fr/GRTux/ - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] Flight Gear runtime failure
I have attempted to build Flight Gear from source, as well as plib, simgear, and openscenegraph. I have retrieved the head of each program from cvs/svn, and compiled/linked without (significant) error. When I execute Flight Gear the program reads airport and navigation data fine, but crashes immediately when reading aircraft data. [I launch the program in default mode with just $fgfs.] I have a Saitec Av8r joystick. I did not include any options with /../FlightGear/source$./configure. Here is the failure information written to screen: [EMAIL PROTECTED]:~/applications/FlightGear/source$ fgfs *** glibc detected *** fgfs: free(): invalid pointer: 0x08746e10 *** === Backtrace: = /lib/tls/i686/cmov/libc.so.6[0xb74037cd] /lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb7406e30] /usr/lib/libstdc++.so.6(_ZdlPv+0x21)[0xb759ed11] /usr/local/lib/libosg.so.25(_ZN3osg16DrawArrayLengthsD0Ev+0x37)[0xb7aae767] /usr/local/lib/libosgUtil.so.25(_ZN7osgUtil11TessellatorD1Ev+0xca)[0xb7db5e7a] /usr/local/lib/osgPlugins-2.2.0/osgdb_ac.so(_ZN4ac3d10SurfaceBin8finalizeERKNS_12MaterialDataERKNS_11TextureDataE+0xa94)[0xa4e91ce4] /usr/local/lib/osgPlugins-2.2.0/osgdb_ac.so(_ZN4ac3d10readObjectERSiRNS_8FileDataERKN3osg7MatrixdENS_11TextureDataE+0x1a34)[0xa4e8b344] /usr/local/lib/osgPlugins-2.2.0/osgdb_ac.so(_ZN4ac3d10readObjectERSiRNS_8FileDataERKN3osg7MatrixdENS_11TextureDataE+0x2a8d)[0xa4e8c39d] /usr/local/lib/osgPlugins-2.2.0/osgdb_ac.so(_ZN4ac3d8readFileERSiPKN5osgDB12ReaderWriter7OptionsE+0xb7)[0xa4e8c7d7] /usr/local/lib/osgPlugins-2.2.0/osgdb_ac.so(_ZNK14ReaderWriterAC8readNodeERSiPKN5osgDB12ReaderWriter7OptionsE+0xd2)[0xa4e9c432] /usr/local/lib/osgPlugins-2.2.0/osgdb_ac.so(_ZNK14ReaderWriterAC8readNodeERKSsPKN5osgDB12ReaderWriter7OptionsE+0x3b5)[0xa4e98e55] /usr/local/lib/libosgDB.so.25(_ZNK5osgDB8Registry15ReadNodeFunctor6doReadERNS_12ReaderWriterE+0x2f)[0xb7c80caf] /usr/local/lib/libosgDB.so.25(_ZN5osgDB8Registry4readERKNS0_11ReadFunctorE+0xf33)[0xb7c78c83] /usr/local/lib/libosgDB.so.25(_ZN5osgDB8Registry18readImplementationERKNS0_11ReadFunctorEb+0x433)[0xb7c7a193] /usr/local/lib/libosgDB.so.25(_ZN5osgDB8Registry22readNodeImplementationERKSsPKNS_12ReaderWriter7OptionsE+0x7f)[0xb7c7a7df] fgfs[0x855ea21] /usr/local/lib/libosgDB.so.25(_ZN5osgDB12readNodeFileERKSsPKNS_12ReaderWriter7OptionsE+0x48)[0xb7c69538] fgfs[0x8556cad] fgfs[0x84108cd] fgfs[0x841022a] fgfs[0x8062b7b] fgfs[0x80aa9d2] /usr/local/lib/libosgViewer.so.25(_ZN9osgViewer6Viewer14eventTraversalEv+0x1040)[0xb7f09270] /usr/local/lib/libosgViewer.so.25(_ZN9osgViewer10ViewerBase5frameEd+0x33)[0xb7f0fda3] /usr/local/lib/libosgViewer.so.25(_ZN9osgViewer10ViewerBase3runEv+0xb0)[0xb7f0fef0] /usr/local/lib/libosgViewer.so.25(_ZN9osgViewer6Viewer3runEv+0x2f)[0xb7f0439f] fgfs[0x80ae7c3] fgfs[0x806234e] fgfs[0x80611e1] /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc)[0xb73b1ebc] fgfs[0x8060fa1] I have ubuntu 7.04, flightgear 0.9.10, openscenegraph 2.2.0-25, simgear 0.3.10, plib revision 2128. Finally, I am really new to Linux. Any help will be greatly appreciated. v/r, Jim Reinsberg - Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games.- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
