Re: [Flightgear-devel] JSBsim C310 crashes the sim on gear retraction.
This gets fixed by this patch:
--- /home/erik/src/CVS/fgfs/JSBSim/FGLGear.cpp
Fri Jan 25 21:10:22 2002
+++ FGLGear.cpp Thu Feb 14 11:26:01 2002
@@ -189,9 +189,11 @@
if (isRetractable) {
if (FCS-GetGearPos() 0.01) {
+ FCS-SetGearPos(0.0);
GearUp = true;
GearDown = false;
} else if (FCS-GetGearPos() 0.99) {
+ FCS-SetGearPos(1.0);
GearDown = true;
GearUp = false;
} else {
Well, I wasn't saying this was the cuase of the
problem, just *a*
solution. I figured there might be a counter
somwhere which decreses
GearPos by a certain amount, but the check didn't
catch it being close
to 0.0
Therefore it would en up in an endless loop or
something.
It's possible. Do you notice any problem with the
flaps? (it's the same code:
Well, I got the evidence now:
*** GearPos = 0.0200
*** GearPos = 0.0183
*** GearPos = 0.0167
*** GearPos = 0.0150
*** GearPos = 0.0133
*** GearPos = 0.0117
*** GearPos = 0.0100
*** GearPos = 0.0083
*** GearPos = 0.0067
*** GearPos = 0.0050
*** GearPos = 0.0033
*** GearPos = 0.0017
*** GearPos = 0.
*** GearPos =
-38906661405588607.
But I cant find where this happens. I trecked it down to FGState.cpp
FGState::SetParameter(eParam val_idx, double val) where I printed the
value of val.
Can anybody who has some more knowledge on JSBSim please take a look at it?
Erik
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RE: [Flightgear-devel] JSBsim C310 crashes the sim on gear retraction.
Where in the code is the gear position (i.e. relative to retracted or extended) calculated and managed? Curt. The gear forces and moments are calculated in individual instances of FGLGear. The ground reactions as a whole are managed in FGGroundReactions. Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] JSBsim C310 crashes the sim on gear retraction.
--- Curtis L. Olson [EMAIL PROTECTED] wrote:
Where in the code is the gear position (i.e.
relative to retracted or
extended) calculated and managed?
src/FDM/JSBSim/filtersjb/FGKinemat
Curt.
Tony Peden writes:
On Fri, 2002-02-15 at 01:49, Erik Hofman wrote:
This gets fixed by this patch:
---
/home/erik/src/CVS/fgfs/JSBSim/FGLGear.cpp
Fri Jan 25 21:10:22 2002
+++ FGLGear.cpp Thu Feb 14 11:26:01 2002
@@ -189,9 +189,11 @@
if (isRetractable) {
if (FCS-GetGearPos() 0.01) {
+ FCS-SetGearPos(0.0);
GearUp = true;
GearDown = false;
} else if (FCS-GetGearPos() 0.99) {
+ FCS-SetGearPos(1.0);
GearDown = true;
GearUp = false;
} else {
Well, I wasn't saying this was the cuase of
the
problem, just *a*
solution. I figured there might be a counter
somwhere which decreses
GearPos by a certain amount, but the check
didn't
catch it being close
to 0.0
Therefore it would en up in an endless loop or
something.
It's possible. Do you notice any problem with
the
flaps? (it's the same code:
Well, I got the evidence now:
*** GearPos = 0.0200
*** GearPos = 0.0183
*** GearPos = 0.0167
*** GearPos = 0.0150
*** GearPos = 0.0133
*** GearPos = 0.0117
*** GearPos = 0.0100
*** GearPos = 0.0083
*** GearPos = 0.0067
*** GearPos = 0.0050
*** GearPos = 0.0033
*** GearPos = 0.0017
*** GearPos = 0.
*** GearPos =
-38906661405588607.
But I cant find where this happens. I trecked it
down to FGState.cpp
FGState::SetParameter(eParam val_idx, double
val) where I printed the
value of val.
Can anybody who has some more knowledge on
JSBSim please take a look at it?
I'll look into it tonight or tomorrow.
Erik
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--
Tony Peden
[EMAIL PROTECTED]
We all know Linux is great ... it does infinite
loops in 5 seconds.
-- attributed to Linus Torvalds
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--
Curtis Olson IVLab / HumanFIRST Program
FlightGear Project
Twin Cities[EMAIL PROTECTED]
[EMAIL PROTECTED]
Minnesota http://www.menet.umn.edu/~curt
http://www.flightgear.org
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RE: [Flightgear-devel] JSBsim C310 crashes the sim on gear retraction.
Curtis L. Olson writes: What code determines whether the gear is retracted or extended or in some intermediate state? That's FDM-specific. In FGControls, we keep the position of the gear selector (up or down), but not the actual gear position (likewise for flaps). All the best, David -- David Megginson [EMAIL PROTECTED] ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] JSBsim C310 crashes the sim on gear retraction.
Tony Peden wrote: Well, I wasn't saying this was the cuase of the problem, just *a* solution. I figured there might be a counter somwhere which decreses GearPos by a certain amount, but the check didn't catch it being close to 0.0 Therefore it would en up in an endless loop or something. It's possible. Do you notice any problem with the flaps? (it's the same code: FDM/JSBSim/filtersjb/FGKinemat.[h|cpp]) Well, not noticably. But the problem is there. When uncommenting line 132 from FGKinemat.cpp it shows the flap code keeps getting updated, but the value doesn't change (while flap down behaves nicely). There must be something wrong with the retraction code. Erik ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] JSBsim C310 crashes the sim on gear retraction.
On Thursday 14 February 2002 01:59 am, you wrote: That's the same error I have on the C172 at simulator startup. FYI. JSBsim C310 crashes the sim on gear retraction. So ... this is an error? This is the same message I get if I do this in real life. ;-) Jon Happens in the air too ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] JSBsim C310 crashes the sim on gear retraction.
Tony Peden wrote: Well, I wasn't saying this was the cuase of the problem, just *a* solution. I figured there might be a counter somwhere which decreses GearPos by a certain amount, but the check didn't catch it being close to 0.0 Therefore it would en up in an endless loop or something. It's possible. Do you notice any problem with the flaps? (it's the same code: FDM/JSBSim/filtersjb/FGKinemat.[h|cpp]) No problems with flaps. Gear still doesn't work (did a complete compile from scratch again). :( Erik ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
[Flightgear-devel] JSBsim C310 crashes the sim on gear retraction.
JSBsim C310 crashes the sim on gear retraction. $PATLA,117.30,119.0,111.80,29.0,266*69 182: GEAR_CONTACT 1 183: Crash Detected 184: GEAR_CONTACT 1 185: Crash Detected 186: GEAR_CONTACT 1 187: Crash Detected 188: GEAR_CONTACT 1 189: Crash Detected 190: GEAR_CONTACT 1 191: Crash Detected 192: GEAR_CONTACT 1 193: Crash Detected 194: GEAR_CONTACT 1 195: Crash Detected Tile not found (Ok if initializing) Attempting to schedule tiles for bogus latitude and longitude. This is a FATAL error. Exiting! ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] JSBsim C310 crashes the sim on gear retraction.
That's the same error I have on the C172 at simulator startup. FYI. JSBsim C310 crashes the sim on gear retraction. $PATLA,117.30,119.0,111.80,29.0,266*69 182: GEAR_CONTACT 1 183: Crash Detected 184: GEAR_CONTACT 1 185: Crash Detected 186: GEAR_CONTACT 1 187: Crash Detected 188: GEAR_CONTACT 1 189: Crash Detected 190: GEAR_CONTACT 1 191: Crash Detected 192: GEAR_CONTACT 1 193: Crash Detected 194: GEAR_CONTACT 1 195: Crash Detected Tile not found (Ok if initializing) Attempting to schedule tiles for bogus latitude and longitude. This is a FATAL error. Exiting! ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] JSBsim C310 crashes the sim on gear retraction.
That's the same error I have on the C172 at simulator startup. FYI. JSBsim C310 crashes the sim on gear retraction. So ... this is an error? This is the same message I get if I do this in real life. ;-) Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
