Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread Jon S. Berndt
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

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread David Megginson
On 07/10/2007, Jon S. Berndt [EMAIL PROTECTED] wrote: I looked at the configuration file for the Seneca II in flightgear cvs. It appears to me (at least given the quick glance I took) that adverse aileron yaw (Cnda) is turned off - the data is all zeros. I'm not sure about the exact

Re: [Flightgear-devel] Flight Gear runtime failure

2007-10-08 Thread Csaba Halász
On 10/8/07, James Reinsberg [EMAIL PROTECTED] wrote: [EMAIL PROTECTED]:~/applications/FlightGear/source$ fgfs *** glibc detected *** fgfs: free(): invalid pointer: 0x08746e10 *** === Backtrace: = /lib/tls/i686/cmov/libc.so.6[0xb74037cd]

Re: [Flightgear-devel] win32 0.9.11 latest binary, where?

2007-10-08 Thread Vadym Kukhtin
2007/10/6, Thomas [EMAIL PROTECTED]: plib (0.9.11pre) version: http://www.rato.us/flightgear/builds/plib/20071005plibexe.zip Just in case you'd like to try that version: http://www.rato.us/flightgear/builds/osg/20071005osgexe.zip Thanks Thomas for your exe's! But I got this, after

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread leee
On Monday 08 October 2007 02:17, dave perry wrote: 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

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread Jon S. Berndt
Is auto-coordination enabled? I don't think this is effective for YASim aircraft but it may be complicating things on JSBSim aircraft. Also, are you getting the same frame-rates with both aircraft? Last time I ran FG I found that the autopilot PID controllers ran at the frame rate and

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread dave perry
leee wrote: On Monday 08 October 2007 02:17, dave perry wrote: 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

Re: [Flightgear-devel] win32 0.9.11 latest binary, where?

2007-10-08 Thread Reagan Thomas
Vadym Kukhtin wrote: 2007/10/6, Thomas [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]: plib (0.9.11pre) version: http://www.rato.us/flightgear/builds/plib/20071005plibexe.zip http://www.rato.us/flightgear/builds/plib/20071005plibexe.zip Just in case you'd like to try that

Re: [Flightgear-devel] oil platform...

2007-10-08 Thread Maik Justus
Hi, A video of Sea Kings starting and landing an a ship: http://pilotservices.streamlinenettrial.co.uk/videos/*Sea_Kings_on_Deck.wmv* this video is not of very good quality, but it's more than worth to see. Maik Robert Black schrieb am 08.10.2007 03:03: On Wednesday 03 October 2007 19:05,

Re: [Flightgear-devel] win32 0.9.11 latest binary, where?

2007-10-08 Thread Roberto Inzerillo
Reagan Thomas ha scritto: Vadym Kukhtin wrote: 2007/10/6, Thomas [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]: plib (0.9.11pre) version: http://www.rato.us/flightgear/builds/plib/20071005plibexe.zip http://www.rato.us/flightgear/builds/plib/20071005plibexe.zip Just in case

Re: [Flightgear-devel] win32 0.9.11 latest binary, where?

2007-10-08 Thread Reagan Thomas
Roberto Inzerillo wrote: Reagan Thomas ha scritto: Vadym Kukhtin wrote: 2007/10/6, Thomas [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]: plib (0.9.11pre) version: http://www.rato.us/flightgear/builds/plib/20071005plibexe.zip

[Flightgear-devel] Vulcan Livery Patch

2007-10-08 Thread Stuart Buchanan
Hi All, Please find below a patch for the vulcan to fix the liveries on plib. I'd be grateful if someone would commit it to CVS. Thanks -Stuart Index: vulcanb2-set.xml === RCS file:

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread Jon S. Berndt
I think Jon B. is onto something by asking how turbulence is implemented in the various fdms. Thanks for the ideas, Dave Does anyone know what typical values are for these two properties: /environment/turbulence/magnitude-norm /environment/turbulence/rate-hz The fact that the first

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread Jon S. Berndt
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

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread John Denker
On Monday 08 October 2007 02:17, dave perry wrote: 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 I agree that they both exhibit unrealistically bad handing

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread David Megginson
On 08/10/2007, Jon S. Berndt [EMAIL PROTECTED] wrote: Does anyone know what typical values are for these two properties: /environment/turbulence/magnitude-norm /environment/turbulence/rate-hz The fact that the first property is named magnitude-norm (emphasis on the *norm*) makes me suspect

Re: [Flightgear-devel] Flight Gear runtime failure

2007-10-08 Thread James Reinsberg
Csaba, Indeed. I have a Radeon X1950 pro. Am I out of luck? Thanks again, Jim Reinsberg Csaba Halász [EMAIL PROTECTED] wrote: On 10/8/07, James Reinsberg wrote: [EMAIL PROTECTED]:~/applications/FlightGear/source$ fgfs *** glibc detected *** fgfs: free(): invalid pointer:

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread Jon S. Berndt
I helped implement this with Tony a few years ago. As I recall, the value was from 0 to 1, where 0 represents no turbulence, and 1 represents the most severe turbulence that we model. You couldn't represent turbulence simply in feet/second, because it consists of both movements and

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread Jon S. Berndt
I don't think that's the primary issue ... although there might be a /secondary/ issue with the kap140 being more vulnerable to bad handling characteristics than some other autopilots are; I don't know. I recommend fixing the flight dynamics first, and only then looking to see what

Re: [Flightgear-devel] autopilots, adverse aileron yaw and jsbsim questions

2007-10-08 Thread Jon S. Berndt
More on turbulence. At least in the copy of JSBSim.cxx that I have there is this code in Copy_to_JSBSim: tmp = turbulence_gain-getDoubleValue(); Atmosphere-SetTurbGain(tmp * tmp * 100.0); tmp = turbulence_rate-getDoubleValue(); Atmosphere-SetTurbRate(tmp); There are two gains