I've posted a schematic of a typical twin-engine transport electrical
schematic at:
http://home.attbi.com/~davidculp2/Elec_Schematic.jpg
The sources of AC power are two engine generators, the APU, and external
power. In most airplanes these sources are never paralleled, so connecting
one
While looking at the 747-400 electrical panel I see that the AC buses are
paralleled. In this case there is a bus called a Tie Bus that serves as the
connection point for the four engine generators and the two APU generators
and the two external power sources. The sychronization of the AC buses
According to the U.S. Navy:
http://www.efdlant.navfac.navy.mil/Lantops_15/topics/Facilities/NAVAIR_51-50
AAA-2.PDF
see Section 003-11 for VASI, Section 003-12 for PAPI
The first (downwind) VASI bar should be 600 feet from the runway threshhold,
and subsequent bars should be 700 feet upwind.
It seems silly to have the brake key slam on full braking power, if it
is to be used on the runway. No wonder the aircraft tend to tip over or
burst their tyres. Can I recommend this patch which sets the all
brakes strength to 0.5 and the individual left/right to 0.7?
One option might be to
I've been converting a FS2002 737 panel to look like the 737-300's I fly. A
version with notes is here:
http://home.attbi.com/~davidculp2/737-300_with_notes.jpg
This jpeg includes some notes on which instruments go where. The master is
in BMP format, without the notes of course. This is the
Here's a Northrop T-38A flight model for the JSBSim FDM. It flies nicely.
Takeoff with flaps at first detent.
Rotate to 10 degrees pitch at about 140 knots.
Raise gear when airborne.
Raise flaps at 200 knots.
Trim stab down to maintain 10 degree climb and accelerate to 300 knots.
Climb at 300
Where did you get the
data? Nicolai's book has T-38 data. Is that where you got it?
Jon
Scrounging on the web, Raymer, Anderson, McCormick, Etkin, Roskam from the
Lewis University library, and some cut-n-paste from Tony Peden's configs.
I then tweaked some things to make it more flyable.
On my one-day-old snapshot build of flightgear I encounter this:
with command line:
--fg-root=/usr/local/FlightGear
--aircraft=c172
--prop:/engines/engine/running=true
--enable-hud
--disable-clouds
--start-date-gmt=2003:01:20:16:00:00
The sim starts with the engine running at about 750 rpm and
I'm modifying a 2D HUD for use with the 737 flight model and was wondering if
there are any plans to change the HUD code to allow direct reading of the
property tree rather than using the hud's intermediary functions?
Dave Culp
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Here some 737 files I've been working on. First the general config.
http://home.attbi.com/~davidculp2/737/737-set.xml
http://home.attbi.com/~davidculp2/737/737-sound.xml
It's a JSBSim model with a generic electrical system, it's own sound config, a
transparent mini panel, a hud based on the
Lightnings would be so cool, another high performance jet. Like some
people over here described it, its just a large engine with wings
tacked on. Guess thats a good way to describe it.
Try this, it's a blast. It uses BAC Lightning F.Mk.6 metrics, Rolls-Royce
Avon 301 engines, and T-38
Just to add my two cents, the eyepoint motion sounds like an interesting way
to add some cues to make up for the cues missing in a motionless sim. Only
small movement in the x and y planes would suffice to provide the cues.
There is some movement in the z axis, mainly from the springiness of
I'm running an NVIDIA card on Mandrake 9.0. Try this.
1.) make sure you are using XF86Config-4
2.) it should have a device section something like this (here's mine)
Section Device
Identifier NV AGP
BoardName NVIDIA GeForce4 (generic)
Driver nvidia
BusID PCI:1:0:0
Option
Here are new flight models for the 737 and T-38
http://home.attbi.com/~davidculp2/737/737.xml
http://home.attbi.com/~davidculp2/t38/t38.xml
Proper yaw dampers are added, and the fudged yaw coefficients returned to
normal. Also removed is the cheesy roll-moment-due-to-theta, which has been
Recently someone posted some F-16 panel artwork here (I forgot who), and I've
made an F-16/T-38/generic-fighter panel/HUD combo out of it. If anyone's
interested I'll post links to my config files here. Screenshot:
http://home.attbi.com/~davidculp2/f16/f16-cockpit.jpg
Some limitations:
1)
Erik wrote:
*Then it might have been me ;-)
Bueno, Erik! Here's what I've done to the panel. I had to shave off the top
and bottom a little for visibility over the nose. I then added some HUD
brackets, and converted it to RGB format. The (huge) file is here:
Steam gauges for N1 and N2 are available at:
http://home.attbi.com/~davidculp2/fg_index.htm
,which also has links to the 737, T-38 and F-16 stuff. Note that the values
for N1 and N2 are faked, but are helpful anyway. Now, where do we cram 16 of
these gauges into the B-52 cockpit?
Dave Culp
I've been working on an ADI for the jets, based on Dave's C-172 attitude
indicator and have hit a snag. Does the 2D panel code offer the ability to
crop textures that would be shifted out of the bounds of the instrument?
Dave Culp
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I've converted the existing vertical-speed-6kfpm instrument into an
Instantaneous Vertical Speed Indicator, called IVSI-6kfpm.xml, which is
available here: http://home.attbi.com/~davidculp2/IVSI-6kfpm.xml
The instrument uses the already existing texture.
In the process I added an interpolation
It looks like there is code that is *supposed* to
subtract the wind from the airspeed, but it obviously isn't working.
This made me curious. Does FlightGear simulate windshear?
Dave
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This could have application to aeroelastic effects?
http://www.gamespy.com/fargo/january02/jiggle/
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Thanks to Michael we have a 3d model for the T-38. I've converted it to use
RGB textures, and it can be found here:
http://home.attbi.com/~davidculp2/fg_index.htm
The archive, T38-3d-model.tar.gz, contains an XML wrapper, which is the
filename that goes into the t38-set.xml config file. The
Good to see that you're indexing these files (all in one place and easy to
get). Is anyone moving them into the cvs? Do others want that done?
With so many airplanes about to be modeled I wonder if it's time we considered
keeping most of them in seperate packages, and what a standard package
Can someone tell me how to get a DME signal from the KSFO ILS/DME RWY 28R
(freq 111.7)? Or from any DME transmitter for that matter. I've never flown
an airplane that required or allowed for tuning of DME.
Do I have to set /radios/dme/frequencies/selected-khz[0] to something?
Thanks,
Dave
For the DME radio we have currently in FlightGear (which is not based
on any particular real-world model), do this:
...
Thanks Dave,
I don't have control heads installed yet, so I'm setting up the nav aids via
command line and the property browser. So, given this in the command line:
I found the problem. The DME is not powered by default (unless you are using
C172 systems), so the following property needs to be set at the command line:
/systems/electrical/outputs/dme[0]=60.0
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I asked a 747-400 pilot what was the fuel flow per engine at cruise. He said
about 6000 lb-per-hour. Assuming a TSFC of 0.5 (I've seen 0.318 and 0.348
for the PW4060, but I don't trust these numbers) that would mean each engine
is developing 12000 pounds of thrust. Therefore the total drag
fgfs --airport=SLLP --aircraft=b52-yasim
Get it off the ground without touching anything but the runway -- oh,
and then keep it in the air, preferably accelerating and/or ascending!
It's not considered safe to change flaps during the takeoff roll,
BTW. Also, gear shouldn't be
That wasn't going to be happening at the La Paz airport, as far as I
could tell, at least not with the current YASim model.
I hope my only flights into or out of La Paz will be in FlightGear :)
Dave
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If I want to use a single key (or button) to toggle a property between 0 and
-1, is there a way to do it without creating an else tag?
example:
button n=5
repeatablefalse/repeatable
binding
condition
property/engines/engine/augmentation/property
/condition
Here are expanded versions of controls.hxx and controls.cxx
http://home.attbi.com/~davidculp2/controls.hxx
http://home.attbi.com/~davidculp2/controls.cxx
I've integrated it into FlightGear/JSBSim, but haven't tested it yet with
other FDM's or with the autopilot. If anyone's interested I'll
Does anyone know anything about how the radio compass (ADF), upper left
instrument should work? I'm not sure yet where the radio controls are (the
radio actually sits behind the pilot seat).
My biggest problem is not knowing what the second arrow is (the one with
two white lines running
From: Frederic Bouvier [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Date: Sat, 29 Mar 2003 17:09:15 +0100
Subject: [Flightgear-devel] P51D config file incorrect in fgfsbase
Here are the latest files I've been using:
http://home.attbi.com/~davidculp2/p51d/p51d.xml
Here are the files needed to upgrade the base package, FlightGear, and JSBSim,
to use the newly-organized FGControls module:
in FlightGear:
Controls/
http://home.attbi.com/~davidculp2/controls.hxx
http://home.attbi.com/~davidculp2/controls.cxx
Autopilot/
Here's a snapshot of a North American OV-10A in the colors of the California
Department of Forestry and Fire Protection (CDF). The 3D model is by Capt.
Slug. The JSBSim flight model uses turbines and thrusters, rather than
propellers.
http://home.attbi.com/~davidculp2/fg-OV-10A.jpg
Here's a
Here's a poor-man's aircraft selector. It's a bash script that calls fgfs
with a string of command line parameters. I have three scripts I'm using
now, called 737, t38 and ov10. To fly the t38 I type t38 at the shell
prompt:
#!/bin/bash
cmdline=
--fg-root=/usr/local/FlightGear
On Saturday 05 April 2003 06:27 am, [EMAIL PROTECTED]
wrote:
I've added a new command, property-randomize. It sets a random value
within a range specified by the user
This is way cool. This is a step towards random failures too? To teach the
basics of getting oneself unlost, you could beam
I am trying to animate the rudder but it seems that the property
/surface-positions/rudder-pos-norm stay at 0.
My mistake. The FCS didn't have an aerosurface-scale for the rudder. In
fact, none of my models have it, so I'll have to add it to them all (thanks
for the catch). Here's the
Fred wrote:
I have another problem: the model seems underpower and it is not able to
take of with full throttle on the KSFO runway. It stall under 160knt and
it arrives at the end of the runway at 175knt.
I've been having a problem with the JSBSim airplanes sometimes
have no fuel in them, even
Actually, the better solution would be for us to fix it. Can you remind me
when this bug was reported (if you recall)? I'll try to have a look at it
in the very near future.
It looks like two bugs, which were discussed a month or two ago, although I
don't know if they were reported via an
On Friday 06 June 2003 01:14 pm, Gene Buckle wrote:
Fortunately, he either noticed or was notified in time find the OTHER big
concrete bit he needed to land on.
Once or twice a year someone lands on the wrong
airport/runway/taxiway/concrete. What's most amazing is that this happens
even in
Reminds me of my flight into Bologna last year in one of go's (now
Easyjet) latest 737-300s -- there was a period of about 10 minutes
when we never flew straight. But they eventually managed to get the
thing aligned, and we did fly the last couple miles in a straight
line...
Most likely the
Has anyone else been having a problem with trying to set the fuel load at
startup using property /consumables/fuel/tank[n]/level-gal_us ? I find that
sometimes I get the fuel load I want, and sometimes I get empty tanks. Is it
just me? This might be specific to JSBSim.
Dave Culp
Here are some equations for calculating the pressure at a specific height:
http://www.grc.nasa.gov/WWW/K-12/airplane/atmosmet.html
If I read correctly, you are converting height to pressure, then to rotation.
Maybe it would be easier to convert back to height first, then you can
convert to
I've seen periodic pauses on my system, linux, KDE, so it's not a Windows
thing. I haven't tried to track down the source of the pauses yet, but I
think it's either tile-related or ephemeris-related. I run FG from the KDE
desktop, using the Konsole console emulator. It could be that the
Are you doing ./configure --with-threads?
Oops. Maybe I aughta. Thanks Jim.
Dave
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I just got on board this project
http://4dgeo.whoi.edu/vpr/
as a graphics engineer and have a lot I need to get a handle on
in a hurry, as the instrument was deployed this weekend for what
hopefully will be a six month 'swim' :-)
Norman
I'd like to see how the Sea Bird conductivity is
If someone wants to contribute a flight model, go ahead.
It will be easy to convert the 737 model to an A320. I'll send you one.
Dave Culp
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What about fly-by-wire ? How can it be taken into account ?
I'll try to work up an alpha limiter and bank limiter using JSBSim's FCS.
Dave Culp
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just a note to say that I am in the process of modelling an
Airbus A320 :
http://perso.wanadoo.fr/frbouvi/flightsim/a320-fb-fgsd.png
Beautiful model Fred! Here are some files that will get it into the air. The
aero model uses A320-200 metrics with 737-300 aerodynamics and flight control
FWIW, the autopilot on Boeing airliners flies the elevator. The elevator trim
then repositions the stabilizer to take the aerodynamic load off of the
controls. As was mentioned earlier, the trim runs slowly (about one-fourth
the manual trim rate) and lags a bit, so if you disengage the
Would it be true to say that any key binding specified in preferences.xml and
keyboard.xml can be overridden in an aircraft's -set.xml file?
Also, wouldn't it be better to allow over-riding the above files entirely by
specifying a path to different files, like this in the -set.xml file? :
On Sunday 08 June 2003 09:29 am, Jim Wilson wrote:
Erik Hofman [EMAIL PROTECTED] said:
This would make it much easier to use rotating number wheels in 2D
instruments also, wouldn't it?
Yes. Actually, I'm using it to simulate a glass cockpit display. But yes,
especially with the step
On Friday 06 June 2003 10:33 pm, Innis Cunningham wrote:
Hi All
I have downloaded a 737-300 model EX FS98 and have got it to show thanks to
David Megginson and Wolfram Kuss's wise words.
Has some got a model about ready if not do you want this one when I get it
Teaked.
Also if there are
I've been thinking (always dangerous) about using an internet form to
auto-generate aerodynamic configuration files for JSBSim. The form would
look something like this: http://home.attbi.com/~davidculp2/fmm.html , and
will have a cgi program on the server that will spit out a plausible
Here's a first stab at a glass cockpit for the 737. My goal is to make a
glass cockpit that looks and works somewhat like the real thing but doesn't
obstruct the view of the outside world.
http://home.attbi.com/~davidculp2/737panel.tar.gz
Dave Culp
Matthew Johnson wrote:
Animal could be a Swallow...
African or European?
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http://perso.wanadoo.fr/frbouvi/flightsim/a320-fgfs-03.png
What was the flight model for this? Was David Culp
modifying the 737?
Yes, it's got A320-200 metrics and 737 aerodynamics. The engines are higher
thrust versions of the CFM-56.
Dave Culp
1). Does anyone know what the two feather wing like icons are supposed to
indicate and what they do if/when they move (look to each side of the 15
degree pitch line in the second picture)?
The pitch limit symbols in the 737 are only visible when the flaps are not up.
They indicate the pitch
Is there somewhere in the docs that gives what boolien expressions work for
the FlightGear XML.
The T38-gear.xml config has an example of how to do a conditional statement in
xml.
Also is there a way to put a time delay in XML.The flap needle moves way to
fast compared with real life.
The
I've finished Aero-Matic 0.1, and it's available to anyone who has a local
webserver with PHP turned on so you can try it out. It will generate aero,
engine and prop config files for JSBSim, based on a few questions about
the airplane you want to model. The purpose is to allow people to
David the 737 flap guage shows 1,5,10,15,25,30 and 40 are all these
increments used in the real aircraft.
Yes, and 2 as well. Takeoff with flaps 5. Land with 30 or 40 (short field).
One thing that isn't modeled exactly yet is the relationship between flap
detent, flap position, and flap
Thanks Ryan,
I'll be AFK for a couple days, but if anyone would care to try Aero-Matic out
I'd like to hear comments. I know the pitch damping in the fighters is a bit
weak. I haven't tested the piston engines because I can never remember how
to start them.
Also, the transport planes are
At flaps-1 the LE flaps (inboard of the engines) all come out all the way, and
all the LE slats (outboard of the engines) come out half way. At flaps-10
all the LE slats come out all the way.
If at any time you approach a stall with flaps at less than 10, the autoslat
system will extend the
/~davidculp2/paraglider.jpg
An archive with all the paraglider files is here:
http://home.comcast.net/~davidculp2/paraglider.tar.gz
Also a Schweizer 1-26: http://home.comcast.net/~davidculp2/schweizer_1-26.jpg
Dave
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... I propose to limit
the views accessible using the 'v' key to a maximum of three and only
for views that are directly related to the aircraft.
For other views I would propose to use a menu entry instead.
Good idea.
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Could someone with CVS access to the base package please commit this file:
http://home.comcast.net/~davidculp2/t38/Instruments/T38-gear.xml
which goes in Aircraft/T38/Instruments.
It fixes the current gear handle. Thanks,
Dave
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nameBattery/name
prop/systems/electrical/suppliers/battery/prop
kindbattery/kind
volts0/volts
amps0/amps
/supplier
/PropertyList
Anyone know what I'm doing wrong?
Dave
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All you need to do is specify:
interval-sec0.05/interval-sec
for the binding in question and you will get a 20 per second repeat rate.
Makes sense to me.
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system is
very obvious. At most airports the structure that supports the lights is not
very noticable, but at KSFO, or any airport with a lighting system that
extends into the water, the structure is very apparent.
Now, how to get a photo of it?
Dave
David Culp
a Lot's of Fun screen shot for all to enjoy.
http://home.comcast.net/~davidculp2/fw190.jpg
Dave Culp
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http
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.
That sound right?
Dave
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I'm assuming you meant divide by 10 with a shift of the decimal point to
the left... ;)
Yep, that's what I meant to say. 0.9 should be changed to 0.09
Dave
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Anyone running FG on XBox/linux yet?
http://xbox-linux.sourceforge.net/index.php
Dave
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http
= -.026
Cnr= -.28
CYbeta= -.9
CYp= 0
CYr= 0
Clda= .013
Cldr= .008
Cnda= .0018
Cndr= -.1
CYda= 0
CYdr= .12
CLalpha= 4.4
Cmalpha= -1
Cmadot= -4
Cmq= -21
CLde= .32
Cmde= -1.3
CD0= .0164
Dave
(afk two days)
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could model this in either the FCS (?) or the drag coefficient
(by including fcs/drag-chute-norm two or more times in the multiplier list)
Dave
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a glider tow - from the wrong end.
Dave
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the
positions specified in the first column, but I'm probably not doing it right.
Dave
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as well?
Dave
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on altitude and speed, but this is not modeled.
Dave Culp
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it as
an image. Please teach me how to make the background transparent.
Thanks
What software do you use to manipulate the images? Can you use The Gimp?
Dave
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, but so far no airplane model makes
use of it.
Dave
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on the cockpit
gauge of the T-38. I don't know what it's called in other afterburning
aircraft, but I suspect it's position, because pilots can't spell
aperture (or is it aperature?).
Dave
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resistance, for broadband users could we then load and run a
model over the web? Like fgfs
--aircraft=ftp://www.flightgear.org/hanger/F16.tgz
Dave
(no, I haven't been drinking)
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no experience with on-the-fly archive
reading.
Dave
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that --aircraft=F16 will be read in
the current way, and --aircraft=F16.tar.gz will be read in as an archive?
Dave
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control and prop. In the mean time
the fakes work pretty well.
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conditions.
Reno, NVHigh terrain.
Hilo (General Lyman), HIMountainous terrain.
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GUI API. I
like the clean no-nonsense look, rather than the artsy Gnome look. So far I
think more gtk apps are available than Qt apps, but that will change, and you
can still run the gtk stuff.
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Even using 2, spacebar only the first engine ever starts...
Are you using shift-2? That selects the second engine.
Also, try shift-G to raise the wheels.
Dave
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St. Auban / LFMX appears to have a wrong location.
For LFMX I show a location of 4404N 00600E, elevation 461 m
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. This is the kind of thing you'd need a 717 pilot's opinion on.
Dave
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above the wing instead of below. If anyone would like to spruce-up
the T-38 3D model, he'll be a hero. (wink, wink :)
Dave
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, was that the files first
needed to be placed in a single directory, which is being done. The next
step will be to chose an archiving library, I believe.
Dave
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bindings up to the user who wishes to do those things.
Dave
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