Marcio Shimoda writes:
How do I see the 3D cockpit?
fgfs --aircraft=c172-3d
This 3D cockpit is part of the C172's AC file?
You might be using an old version. In the last release, the old
--aircraft option has been renamed to --aero, and the --aircraft
option now points to a
I think a series of demos would be a great idea. It would also be nice if
there were demos for various terrain types (stress testing). I fly around
the Seattle area simply because the mountains drastically impact frame
rate.
Not only the mountains. ATIS display has _heavy_ impact. I
On Monday 08 April 2002 07:41 am, you wrote:
I think a series of demos would be a great idea. It would also be nice
if there were demos for various terrain types (stress testing). I fly
around the Seattle area simply because the mountains drastically impact
frame rate.
Not only the
I recently sat beside the pilot in our Cessna Caravan to see exactly what was involved
in a typical flight despatching skydivers.
I was immediately taken aback by the short takeoff run of the grand caravan
considering the load of fuel and 20 persons onboard. Angela, the pilot, talked me
approach. She then said '...and this is how we slow down in a
hurry'. Adjusting the prop RPM lever and throttle to get us from
145 knots to 80 in around 4 seconds. Very impressive! Is this
modelled in FGFS?
It *should* be, however we have a possible reported a bug in our propeller
model
On Sat 6. April 2002 14:24, you wrote:
Erik Hofman writes:
In fact, I have decided to get my pilots license whenever possible,
despite the first experience in the simulator.
I was surprised by how inexpensive an intro flight is (much less than
a modest dinner out).
Be happy that you
David Megginson wrote:
Erik Hofman writes:
In fact, I have decided to get my pilots license whenever possible,
despite the first experience in the simulator.
I was surprised by how inexpensive an intro flight is (much less than
a modest dinner out).
When reading the message I get
You might check the property tree for any rudder or
aileron biases. In other words, the cmd is zero and
the pos is not.
--- David Megginson [EMAIL PROTECTED] wrote:
A few weeks ago, Curt reported that the JSBSim C172
is showing a very
strong tendency to roll and yaw left, even when in
level
You might check the property tree for any rudder or
aileron biases. In other words, the cmd is zero and
the pos is not.
Tony, are you seeing the roll?
smime.p7s
Description: application/pkcs7-signature
I'd like to suggest a couple of changes to the YASim piston-engine
model, keeping in mind Andy's past caveats that it is very simplistic.
The most important one is idle RPM. Currently, the YASim c172 idles
at about 1,350 RPM. From what I've found, recommended RPM for taxiing
a C172 is only
[EMAIL PROTECTED] writes:
As we drew close to runway 25 she took over and started the
approach. She then said '...and this is how we slow down in a hurry'.
Adjusting the prop RPM lever and throttle to get us from 145 knots to
80 in around 4 seconds. Very impressive! Is this modelled in
Thanks to Jim Wilson, we have a working tower view in CVS: [...]
Wow, this one is incredibly good,
Martin.
--
Unix _IS_ user friendly - it's just selective about who its friends are !
--
Tony Peden writes:
You might check the property tree for any rudder or
aileron biases. In other words, the cmd is zero and
the pos is not.
Surface positions for rudder and ailerons are both 0; elevator
position is slightly higher, probably because of trim.
All the best,
David
--
On Monday 08 April 2002 07:41 am, you wrote:
Not only the mountains. ATIS display has _heavy_ impact. I usually get
around 100 fps inside a 800x600 window (BETA Radeon DRI driver, only 40 fps
left at 1600x1024 ), at KSEA I only get 30-50 fps because of ATIS
display (with today's current
What units are we measuring fuel quantity in these days? If not
gallons, can someone give me a rough conversion from what we are using
to gallons (ignoring issues such as temperature ...)
Thanks,
Curt.
--
Curtis Olson IVLab / HumanFIRST Program FlightGear Project
Twin Cities[EMAIL
Curtis L. Olson writes:
What units are we measuring fuel quantity in these days? If not
gallons, can someone give me a rough conversion from what we are using
to gallons (ignoring issues such as temperature ...)
The property system currently publishes the value using US gallons,
but
I'm trying to set up some compound conditions. I've looked through the
documentation - Users Guide to Panel Configuration, and can not find an
example of a compound condition. The parser doesn't seem to like what I'm
doing.
Here's an example:
event n=3
nametext3/name
and
We use pounds.
Jon
Jon S. Berndt
Coordinator,
JSBSim Project
http://jsbsim.sf.net
Curtis L. Olson writes:
What units are we measuring fuel quantity in these days? If not
gallons, can someone give me a rough conversion from what we are
using
to gallons (ignoring issues such as
David Megginson wrote:
Curtis L. Olson writes:
What units are we measuring fuel quantity in these days? If not
gallons, can someone give me a rough conversion from what we are using
to gallons (ignoring issues such as temperature ...)
The property system currently publishes the
D Luff writes:
BTW, clicking reply is defaulting to the poster rather than the list,
is this something wrong on my end or have the list settings
changed?
I'm not seeing that here. As far as I know, we haven't changed
anything in the list config.
Regards,
Curt.
--
Curtis Olson IVLab /
The property system currently publishes the value using US gallons,
but think that almost everyone agrees that using a volume measurement
is wrong, since volume is relative to temperature and air pressure.
For the big iron, yes, but for small piston planes I personally think
volume is
Jon, I'm trying to find any research that NASA has done on G induced
blackouts during spins. If you know where I can start digging for this
kind of thing, please let me know (off list). I've been hammering all
over and I'm coming up empty.
Thanks! (sorry the noise guys!)
g.
Do we care about this error ?
/usr/bin/ld: Warning: size of symbol `current_model' changed from 4 to 8 in
../../src/Model/libModel.a(acmodel.o)
___
Flightgear-devel mailing list
[EMAIL PROTECTED]
Try searching the nasa tech reports sites:
http://techreports.larc.nasa.gov
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Gene Buckle
Sent: Monday, April 08, 2002 11:18 AM
To: [EMAIL PROTECTED]
Subject: [Flightgear-devel] [OT] Jon!
Jon, I'm
Dawn Ellis writes:
Here's an example:
event n=3
nametext3/name
and
condition
less-than-equals
property/position/altitude-ft/property
value77900/value
/less-than-equals
greater-than
property/position/altitude-ft/property
Alex Perry writes:
Do we care about this error ?
/usr/bin/ld: Warning: size of symbol `current_model' changed from 4 to 8 in
../../src/Model/libModel.a(acmodel.o)
Yes, I'm getting this as well and I don't understand it.
All the best,
David
--
David Megginson
[EMAIL PROTECTED]
Got this error while linking latest flightgear from CVS:
fg_init.o(.text+0x4c57):fg_init.cxx: undefined reference to
`FGJSBsim::FGJSBsim(double)'
Anyone else see this? I'm going to have a look now (I'm home today).
Jon
smime.p7s
Description: application/pkcs7-signature
Right now our wheels are stored in an array. Is there anywhere that
defines which position corresponds to which wheel ... something along
the lines of:
wheel[0] == nose
wheel[1] == left
wheel[2] == right
?
Thanks,
Curt.
--
Curtis Olson IVLab / HumanFIRST Program FlightGear Project
Right now our wheels are stored in an array. Is there anywhere that
defines which position corresponds to which wheel ... something along
the lines of:
wheel[0] == nose
wheel[1] == left
wheel[2] == right
from JSBSIm.cxx:
FCS-SetLBrake( globals-get_controls()-get_brake( 0 ) );
Ok, thanks,
Curt.
Jon Berndt writes:
Right now our wheels are stored in an array. Is there anywhere that
defines which position corresponds to which wheel ... something along
the lines of:
wheel[0] == nose
wheel[1] == left
wheel[2] == right
from JSBSIm.cxx:
David Megginson [EMAIL PROTECTED] said:
Alex Perry writes:
Do we care about this error ?
/usr/bin/ld: Warning: size of symbol `current_model' changed from 4 to 8
in ../../src/Model/libModel.a(acmodel.o)
Yes, I'm getting this as well and I don't understand it.
It's probably the
Jim Wilson wrote:
Alex Perry [EMAIL PROTECTED] said:
Gadds. I don't know...even with an almost completely idle cpu occaisonally I
seem to have these weird performance discrepencies. It isn't heat, so who
knows. Maybe its something weird about the kernel. Later without changing
On Mon, 8 Apr 2002 13:01:09 BST,
[EMAIL PROTECTED] wrote in message
20020408120149.CJOW18448.wmpmta03-app.mail-store.com@wmpmtavirtual:
started the approach. She then said '...and this is how we slow down
in a hurry'. Adjusting the prop RPM lever and throttle to get us from
145 knots to 80
MAJOR FRUSTRATION MODE:
I did a complete checkout and rebuild of FlightGear. Again, it gets all
through compile and fails at the link stage. This is with a clean CVS
checkout.
fg_init.o(.text+0x4c57):fg_init.cxx: undefined reference to
`FGJSBsim::FGJSBsim(double)'
Is no one else seeing this?
Jon Berndt writes:
Right now our wheels are stored in an array. Is there anywhere that
defines which position corresponds to which wheel ... something along
the lines of:
wheel[0] == nose
wheel[1] == left
wheel[2] == right
from JSBSIm.cxx:
FCS-SetLBrake(
Never mind. Seemed to work after I did:
1) Deletion of flightgear tree
2) recheck out
3) Surprise! JSBSim.[c|h]xx no longer in fgfs cvs! (??)
4) aclocal;autoconf;etc.
5) make
Jon
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Jon Berndt
Sent:
Martin Dressler wrote:
On Sat 6. April 2002 14:24, you wrote:
Erik Hofman writes:
In fact, I have decided to get my pilots license whenever possible,
despite the first experience in the simulator.
I was surprised by how inexpensive an intro flight is (much less than
a modest
from JSBSIm.cxx:
FCS-SetLBrake( globals-get_controls()-get_brake( 0 ) );
//left
FCS-SetRBrake( globals-get_controls()-get_brake( 1 ) );
//right
FCS-SetCBrake( globals-get_controls()-get_brake( 2 ) ); //
center
--
Do aircraft really have nose wheel brakes? Most
Jon mentioned something about using the glass displays for a possible
app?
The program now has both file-based and command line initialization so
it's
a bit more user friendly and the linux build is clean once the library
fonts
are installed. And there is a short tutorial and install doc.
If you are near a TV ... the shuttle goes up momentarily.
Jon
smime.p7s
Description: application/pkcs7-signature
Curtis L. Olson wrote:
Right now our wheels are stored in an array. Is there anywhere that
defines which position corresponds to which wheel ... something along
the lines of:
wheel[0] == nose
wheel[1] == left
wheel[2] == right
In YASim, this is done by configuration convention.
Prototyping and evaluation of launch vehicle flight deck displays.
Jon
Commercial or open source?
A few years back we used a product from a company located in Montreal
(for the moment the name escapes me) to build displays (pre-OpenGL)
with XView that ran on Sun platforms and supported 1553
Commercial or open source?
Regards
John W.
Very early stage demonstration of displays. We might have need for
something quick and dirty. This is all speculative. Might never pan out,
but I am trying to get my superiors interested for use as a tool for
potential future work.
Jon
smime.p7s
David Megginson wrote:
The most important one is idle RPM. Currently, the YASim c172 idles
at about 1,350 RPM. From what I've found, recommended RPM for taxiing
a C172 is only about 900 RPM, and some checklists I've see state that
the engine should be idling at over 575 RPM, so I'd
David Megginson wrote:
Matt wrote:
As we drew close to runway 25 she took over and started the
approach. She then said '...and this is how we slow down in a hurry'.
Adjusting the prop RPM lever and throttle to get us from 145 knots to
80 in around 4 seconds. Very impressive! Is
Andy Ross writes:
Basically, if I understand the request, it should be sufficient to set
the takeoff-rpm value to 2100 or so, while leaving the cruise value
alone. That should do what you want. I didn't bother to look up real
numbers when I did most of the YASim planes, so this is
David Megginson wrote:
Andy Ross writes:
Basically, if I understand the request, it should be sufficient to set
the takeoff-rpm value to 2100 or so, while leaving the cruise value
alone. That should do what you want.
I'm not sure that's right. By the time the plane is moving fast
Nope; you can fairly easily get the RPM over 2700 in a fast cruise descent,
but there is no way you'll manage over 2500 at Vy, never mind Vx.
Andy Ross writes:
Basically, if I understand the request, it should be sufficient to set
the takeoff-rpm value to 2100 or so, while leaving the
Alex Perry writes:
Nope; you can fairly easily get the RPM over 2700 in a fast cruise descent,
but there is no way you'll manage over 2500 at Vy, never mind Vx.
We're modelling a C172R, which maxes out at 2400RPM. Would the same
apply there?
All the best,
David
--
David Megginson
You should talk to Andy and look at the prop model; the faster you go,
the faster the prop can turn. Fast cruise descents can overspeed.
I'm not at home and can't look up the exact numbers, sorry.
Alex Perry writes:
Nope; you can fairly easily get the RPM over 2700 in a fast cruise
I am driving the C172 to approach and land on the airport.
(1) What are the speed and altitude the plane should be before Gliding slope? 1000
feet and 65 KCAS? I heard that the stall speed is about 50 KCAS.
(2) When Gliding slope , should we must follow the flight path angle with -2.5 degree?
Why not translate nonlinear model of Pioneer to JSBSim?
http://amber.aae.uiuc.edu/~jscott/sis/models/
Are current plane models with LaRCSim in FlightGear all linear? Flying with LaRCSim
and UIUC models are easier than with JSBSim and C172.
I notice that in
Although SimGear is now building under MSVC (thanks).
MSVC also does not like having constants defined in a class (net_fdm.hxx and raw_ctrls.hxx).
static const int FG_MAX_ENGINES = 4;
static const int FG_MAX_WHEELS = 3;
static const int FG_MAX_TANKS = 2;
When I used the recommended, and I
David Megginson wrote:
Alex Perry writes:
Do we care about this error ?
/usr/bin/ld: Warning: size of symbol `current_model' changed from 4 to 8 in
../../src/Model/libModel.a(acmodel.o)
Yes, I'm getting this as well and I don't understand it.
It's a symbol collision. There's
These
items should not be limited, anyhow. Where is this done???
-Original Message-From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Jonathan
PolleySent: Monday, April 08, 2002 9:24 PMTo:
[EMAIL PROTECTED]Subject: [Flightgear-devel] MSVC
Still not
This is in a section of code that is shipping the data over the net,
so in this case a fixed limited structure size is desirable. We can
always extend it later if we need to ... re: David's/Andy's principle
of not over designing to much too early (aka doing just barely enough
to get by?) :-)
I have finished working the bugs out of my Enhanced version of the Magic
Carpet FDM. The UFO FDM works the same as the Magic Carpet with the
following exceptions:
The aircraft's pitch is determined by the Elevator setting (with a pitch
rate of 45 degrees per second).
Climb is forward
Alex Perry writes:
You should talk to Andy and look at the prop model; the faster you go,
the faster the prop can turn. Fast cruise descents can overspeed.
I'm not at home and can't look up the exact numbers, sorry.
In JSBSim, the prop maxes out between 2065 and 2165 RPM at 0 velocity,
David Megginson wrote:
I'd like to suggest a couple of changes to the YASim piston-engine
model, keeping in mind Andy's past caveats that it is very
simplistic.
OK, I've hacked at the idle RPM code a bit to reduce the idle MP.
This is, well, a hack; but it puts the idle in a saner range on
Why not translate nonlinear model of Pioneer to JSBSim?
Why not?
http://amber.aae.uiuc.edu/~jscott/sis/models/
The data is all there. In fact, the model files the UIUC guys use present
pretty much the same information that JSBSim does. Perhaps someone could
write a translator? :-)
I notice
How do I see the 3D cockpit?
fgfs --aircraft=c172-3d
This 3D cockpit is part of the C172's AC file?
You might be using an old version. In the last release, the old
--aircraft option has been renamed to --aero, and the --aircraft
option now points to a general
Jonathan Polley
writes:
Although SimGear is now building under MSVC (thanks).MSVC also does not like having
constants defined in a class (net_fdm.hxx and raw_ctrls.hxx).static
const int FG_MAX_ENGINES = 4;static const int FG_MAX_WHEELS = 3;static
const int FG_MAX_TANKS = 2;When I
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