Heading Indicator drift rate
Emilio
I never dealt with real HI so I don't know if the drift rates are real.
During the flight I need to recalibrate HI quite often. It constantly
drifts even in a straight and level flight. During landing, from down wind
to final, HI can drift as much as total of 30 degrees! Is this right? I
can no longer look at HI for landing.
One time during the climb, I had auto heading mode turned on to intercept
VOR route. Problem was that there were strong cross wind that kept pushing
me away from VOR route. And, at the same time HI was drifting away too.
The net effect was bad. The correction I inputted in heading did not keep
up with the total drift! I kept trying to head towards the VOR route but
the aircraft kept diverging away from it! Since then, I always keep the
Magnetic Compass in view at all times.
Emilio.
pr
> I am flying the Cessna on FS2002 with Heading Indicator ( HI ) drift "on."
> I never dealt with real HI so I don't know if the drift rates are real.
> During the flight I need to recalibrate HI quite often. It constantly
> drifts even in a straight and level flight. During landing, from down wind
> to final, HI can drift as much as total of 30 degrees! Is this right?
No, it is not right. MS was too aggressive in modeling this drift in
FS2002. Due to this problem, this realism setting is the only one I do
not use.
--
Peter
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Kendal W. Carlson
fly for real. I've finally given up on dealing with it in the simulator and
turned gyro-drift off. It would be nice to be able to set a more reasonable
drift rate somehow. My DG gets off as much as 5 degrees before I turn
crosswind in a closed pattern. I run at least three full patterns on the
real plane before the DG is off by that much.
"Emilio" <emil...@compuserve.com> wrote in message
news:b169vk$f1o$1...@ngspool-d02.news.aol.com...
Randy L.
I fly a Cessna 172, and the only time that the real Directional Gyro
drifted as much as it does in FS2002 was when there was something wrong with
it.
In the real C172, I only had to adjust the DG maybe once in an hour
(although I check it about every 15 minutes). You can turn off "Gyro Drift"
in the Aircraft Realism settings.
Randy L.
"Americans are despised for reasons that
have less to do with who we are and
what we have, and more to do with the
dictatorial political and religious leaders
who seek to shift attention away from
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more than succeeding where they
have failed. "
-Cal Thomas
"Emilio" <emil...@compuserve.com> wrote in message
news:b169vk$f1o$1...@ngspool-d02.news.aol.com...
B and T
editor (and it is not the true/false seeting for gyro drift). I remember
seeing a post about it on avsim.com forum and possibly on this forum in the
past. It may be the gyroeffect setting under the 'realism' heading in the
file.
Best regards,
Tom
"Emilio" <emil...@compuserve.com> wrote in message
news:b169vk$f1o$1...@ngspool-d02.news.aol.com...
pr
> There is a setting in the FS2002.cfg file that can be altered in a text
> editor (and it is not the true/false seeting for gyro drift). I remember
> seeing a post about it on avsim.com forum and possibly on this forum in the
> past. It may be the gyroeffect setting under the 'realism' heading in the
> file.
No, there is no such setting in the FS2002.cfg file that adjusts the
gyro drift.
The setting to which you are most likely referring under the [Realism]
key of the FS2002.cfg file is GyroEffect, but this setting controls the
left turning tendency of a single-engine aircraft that is caused by gyro
precession (the gyro, in this case, being the spinning propeller).
Unfortunately, in FS2002 the only control for Gyro Drift is either on
(checked) or off (unchecked).
B and T
gyroscopic drift and not the left turning tendency.
http://www.fsgateway.com/tips_read.asp?id=299
Quite a number of bugs in FS2K2 have gone unnoticed by the QA team. This is
not surprising and quite understandable,
considering the sheer size of the program (care to guess how many millions
of lines of code there are?). It is therefore up to us
to squash those nasty insects Microsoft missed :)
One such little buzzer is the greatly exaggerated gyroscopical drift-effect.
In the real world, this deviation is roughly 15 degrees
per hour - but in FS2K2, values of 120 degrees/hour are no exception!
Recalibrating the gyro every ten seconds gets *very*
repetitive *very* fast, I can tell you... so here's how you fix it.
Open up FS2002.cfg with your favorite text editor and look for the line
"GyroEffect=1.000000". Change it to something more
reasonable, e.g. "GyroEffect=0.125000", and presto! One happy gyroscope. :)
Hope this helps.
Henrik Dissing
>Here is the link from fsgateway and the text to it. This is to change the
>gyroscopic drift and not the left turning tendency.
>
>http://www.fsgateway.com/tips_read.asp?id=299
So now we know where you got it from. Doesn't make it more true, though ;-)
Try it for yourself, and notice that changing that value moves the slider
labeled "Gyro" in the "Flight model" box of the "Realism" settings window.
The reason that parameter is grouped with flight model parameters is that it
is... you guessed it, a flight model parameter. It has nothing whatsoever to
do with the instrumentation.
Unlike those people who keep passing this "trick" around, I have actually
conducted a series of controlled tests to prove my claim.
So, no, there is no proven way to adjust the drift rate of the heading
indicator. It's too much drift or no drift. You choose.
Best regards,
Henrik Dissing
B and T
I tried it and you are correct Henrik. The source looked like a good one for
information but I guess it wasn't.
Sorry for posting and continuing the misinformation.
Best regards,
Tom
"Henrik Dissing" <hen...@post.tele.dk> wrote in message
news:jerf3v48kprp346gs...@4ax.com...
Andy Weller
gyro drift rate. I haven't been able to work out how to use this facility
yet, but it's worth a look (check out the keyboard assignments tab for
commands it can send to FS). Anyone know how?
Andy
"B and T" <btfr...@spamnotattbi.com> wrote in message
news:LO%Z9.2313$G83.283@sccrnsc04...
Andy Hatcher
several sites that give a detailed answer how to modify either the
aircraft.cfg ro FS2002.cfg to correct the drift rate. It's been so long ago
I don't remember it myself, but it's out there.
Andy
"Andy Weller" <getstuff[at]dsl.pipex.com> wrote in message
news:3e3ce065$0$225$cc9e...@news.dial.pipex.com...
bl...@nospam.com
Yeah that's what I thought, but the procedure described on those sites
is incorrect - at least the ones I've seen. They refer to a "Gyro
Effect" variable in fs2002.cfg, which is an aerodynamic setting, not an
instrument one.
Right now I think our only hope is FSUIPC. Based on reading the History
document, it seems that there is a *programmatic*, readable/writeable
"gyro drift" variable... but apparently no interface to this variable is
provided via the FSUIPC dialog window, so perhaps someone should ping
Pete D. and ask him to add this. (He's already done a couple things for
me in FSUIPC and PFCDLL so I don't want to wear out my welcome.)
Dave Blevins
KRHV
On Sun, 2 Feb 2003 08:20:22 -0600, "Andy Hatcher"