AJ MacLeod wrote:
On Monday 23 January 2006 13:46, Jon S. Berndt wrote:
I've created a schema for the JSBSim aircraft configuration file.
The
XMLStarlet utility, xml, validates an aircraft flight model in less
than a second.
Sounds nice... and since I'm currently working on a JSBSim
Erik Hofman wrote:
This is a comment in the original (Cameron Munro Cameron Moore)
configuration file which might give a clue:
!-- McCormick p609 --
COEFFICIENT NAME=Cmq TYPE=VALUE
In the source file src/FDM/LaRCsim/cherokee_aero.c there's my
interpretation of original aero
I noticed when running the 737-300 model if i switch off the
fuel pumps this has no effect on the engines at all.
How can i make the pumps turning off have an effect on the
engines etc.
Also i'd like to implement the crossfeeds so i can have the
switches in my cockpit too.
Anyone any
Title: 3D models
Is anyone aware of a converter that takes Moray 3D models to Blender?
Jon
---
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend
Second (and more important) a hopefully good guess about the
VRP. I used the z value of the old 737, which seems to fit
and spent half an hour trying to figure out the y value. I
tested giving full left break and 90% thrust which keeps the
plane spinning around the left main gear and came
Still having problems? Everything seems ok over here.
Curt.
It appears that my simgear cvs update finally went through, and so I was
able to build flightgear, too. Did you notice a problem with simgear cvs
this morning?
Jon
---
This
Title: 3D models and Blender
If I'm not mistaken, the open source 3D modeing tool has been used to develop 3D models for FlightGear. Correct? Can the 3D models simply be opened in Blender?
Jon
---
This SF.Net email is sponsored by
Title: Open Source Article
One of my [too] many outside activities is serving as the volunteer editor of Horizons, the online magazine for the local Houston chapter of AIAA (the American Institute of Aeronautics and Astronautics). The current issue (Jan/Feb) just now uploaded to our site has
Whats wrong with Concorde have the authors also taken this
one out of commission ?
It doesnt run , just says flightgear aborted no other errors.
Cheers,
Justin Smithies
Read the post from earlier today about the Concorde, Re: FG core dump
when running Concorde. You'll find the answer.
From: Curtis L. Olson
And of course, every experienced unix professional knows
the original vi was already perfect.
Not every. Some switched to emacs and thereafter would
install emacs first before doing anything with a new machine. :-)
As mentioned here before, there are several
Title: [OT] Simulators
As some of you may know, I am involved in supporting simulator development in my day job, as are many of you. I got a tour of some simulator components that I had not seen before. One that I saw yesterday is used for training for proximity operations between the space
Title: Performance monitoring
Can anyone tell me what the name of the routines is that allows one to determine the performance details of a Linux application?
Jon
---
Using Tomcat but need to do more? Need to support web services,
Hi,
I am experimenting with structural icing and am hacking on a
little nasal script that checks outside temperature and
dewpoint to guess if the aircraft is currently in a potential
icing area and pack some ice on the surfaces.
To get ice on the wings one thing is needed besides low
How did you design your autopilot? Do you have a block
diagram of the signal flow?
Jon
Hello, first let me
introduce myself. I am Jimmy Coley, a student at the University of West
Florida (UWF). I have been using simulators since MSFS98 was first
released, and Now I have migrated
In my view, the FlightGear GPL license covers our source
code, but not content created with or used by that code
(except for things like the base package which is explicitely
licensed as GPL.)
In my mind, that is one reason why the approach taken by FlightGear and
associated projects lke
In the course of developing the KC135, I noticed that parts
of the autopilot function do not work in that model, copied
from the B737 - the bits described as vor/loc and app.
Investigation showed that the cause was simple
- in JSBSim a jet ac does not have vacuum system. No vacuum -
no
Hi all,
Ealier today, I posted a message here indicating my
intentions of committing the airway database code into CVS.
For some reason, that email still hasn't appeared on the list.
There was an issue with the SourceForge mailing lists yesterday. I think
they are still catching up. If
Hi, Robert:
Not that it does you a lot of good if using the Net FDM,
but that feature isavailable in JSBSim if contact points are defined in
the aircraft configuration file. My guess is that YASim does that, too. It's
sort of a flight model feature. If you are providing your own dynamics,
Here's a graph that illustrates it:
http://members.aon.at/mfranz/jitter.png [20 kB]
Command line was
$ fgfs --aircraft=OV10_USAFE --airport=krhv
--disable-real-weather-fetch
and a few settings in local preferences.xml (nothing
relevant). SimGear FlightGear from CVS/HEAD, of
Here is the first step of a more general update I want to
implement for the
X-15 (also including 3D cockpit and systems)
So far I only modelled the X-15A-2. Depending on what flight
dynamics are implemented I may change to X-15 #1 (basic
aerodynamics and Stability Augmentation System)
http://www.geocities.com/robitabu/fgfs_SW/SW_01.jpg
http://www.geocities.com/robitabu/fgfs_SW/SW_02.jpg
Oops! I guess EDDK is not a good spot where to hide my vehicle.
Damn! They really don't stop chasing me :-(
I've actually considered making a flight model for an X-wing or other
Star Wars
On Thursday 09 November 2006 14:01, Jon S. Berndt wrote:
Is anyone else noticing any SourceForge mailing list problems?
I'm not seeing my own posts now - I seem to get everything
else OK though.
And yes, I did check that the option was set to receive
copies of my own messages (besides
Has anyone built this on Windows XP under Cygwin, yet?
Jon
-
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download
On Friday 08 December 2006 12:06, Stuart Buchanan wrote:
Hi All,
I recently bought a flex-wing microlight (aka trike,
ultralight,
hang-glider with a lawnmower engine). Specifically, a
Mainair Flash
2 Alpha.
There is currently a picture of it here:
The slipping is a numerics effect, not a modeling one.
The only way to get the gear jitter to produce a stable
solution over time is to push the coefficients *down*. But
that will produce more slipping, not less. The solution to
this problem is a rewrite of the static gear friction to
John Denker wrote:
I observe that if the aircraft is initialized to an airborne
position, the /gear/gear/wow property is stuck at 1,
indicating weight on the wheels, even though the
compression-norm property is zero.
This initialization can come via the command line
via
John Denker wrote:
This is getting somewhat OT, but it's fun, so I thought I
would mention it:
When you fly the Skylane RG, always take the tow-bar with
you; don't leave it in the hangar.
I guy I know had a gear failure involving loss of hydraulic
fluid (not simply failure of the
Title: Proposal: New external force capability for JSBSim
Dave Culp and I have been discussing the catapult and hook scheme for a while. That discussion has actually gone farther than that specific case, to planning for a capability that is a general one, for applying external forces to a
What's a realistic upper limit for polygon count now for an aircraft
model? 5000? 1? 25000?
What's definitely out?
Jon
-
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and
Title: FlightGear presentation
I'll be presenting an overview of FlightGear and JSBSim on Wednesday. I have some good screen shots, but if someone can point me towards some more good eye candy and movies of FlightGear in action, that would be appreciated. Note that requested screen shots are
Title: FlightGear Presentation at Johnson Space Center
I'll be presenting FlightGear and JSBSim during the AIAA-Houston Annual Technical Symposium (ATS) at NASA Johnson Space Center on May 11. I already have a presentation about JSBSim, and some words on FlightGear, but I want to add more to
Hi,
I'm trying to use FlightGear for some gliding/soaring
simulation, and I've got a few questions...
First, am I right that the AIthermal already written only
works with JSBSim Flight Models, and that that conversely the
turbulence model (used in the AIstorm), and the new winch
gh.robin wrote:
With FlightGear-0.9.11-pre1 it is something strange
we have Flying Carriers.
The carrier is correct - sea level is wrong :-))
Martin.
P.S.: Just a joke
Ha! Actually, I'd expect someone from the Navy will be contacting the
FlightGear management,
That should not be necessary. The aircraft configuration file only needs
to be consistent within itself. The structural frame is used for the
location of engines, landing gear, empty-weight CG, etc. There is also
a point called the visial reference point (typically the nose of the
aircraft) that
Short version:
Here is the link to an updated patch which (a) corrects the
VRP precisely as Anders did with the F80C while removing the
somewhat incorrect Z offset in /Models and (b) adds several
contact points. It does not change any other pre-existing
gear, etc coordinates:
See attached forwarded message. Someone is selling FlightGear
on ebay. This time there is no mention of our project name, they have
changed the name and are calling it Pro Aircraft Flight Simulator. In
addition, they are using the same sleazy tactics of selling a digital
download, not
In every aeronautical engineering publication I've seen, the
convention for positive has been:
-- Positive aileron deflection creates a positive rolling moment,
positive around the +X axis, i.e. roll to the right;
-- Positive rudder deflection creates a positive yawing moment,
-- Positive elevator deflection creates a positive pitching moment,
positive around the +Y axis, i.e. nose up.
By the way, Cm_de (that is, pitching moment given an elevator
deflection) is nominally negative. So, you can see, a positive elevator
deflection results in a negative pitching
Title: Re: [Flightgear-devel] flight control polarity
On 07/03/2007 02:45 PM, Berndt, Jon S wrote:
A positive elevator angular deflection (about the +Y
axis) makes the trailing edge of the elevator move down, resulting in a
negative pitching moment.
Likewise, a positive rotation
There is a bug in JSBSim causing multiengine aircraft with
counterrotating props suffer from excessive yaw when engines
are running. Significant aileron deflection is required to
fly straight and level.
I tracked down that issue and finally came to FGPropeller.cpp
line 198:
Yes there is some differences needed to keep the right
heading , when we modify the throttle value, but it is not
exactly what you are describing.
I haven't been able to look too closely at this, yet, but I have a
suspicion. If you look in the function FGPropeller::GetPowerRequired()
there
Hi,
I just observed something I don't know if it's a bug or a feature:
Parking any JSBSim aircraft at KSFO and simulating global
warming by setting the air-temperature to 45degC and dewpoint
to 40degC and observing the properties
/environment/density-slugft3
and
V1.0
Jon
-
SF.Net email is sponsored by: The Future of Linux Business White Paper
from Novell. From the desktop to the data center, Linux is going
mainstream. Let it simplify your IT future.
Actually, it might be closer to v5.0 by now.
-
SF.Net email is sponsored by: The Future of Linux Business White Paper
from Novell. From the desktop to the data center, Linux is going
mainstream. Let it simplify your IT
On Behalf Of dave perry
Sent: Tuesday, December 04, 2007 1:13 PM
While looking into the AP oscillation about the ILS near the
runway for the SenecaII, I noticed that the sense is still
accounted for twice (see
Re: [Flightgear-devel] Bug in JSBSim FGPropeller.cpp,
08/07/2007) in
There has been some discussion of the F-16 working badly. I took another
look at it over lunch. I think I have found one bug (which is not to
say, the only bug). There are several integrators used in the control
laws. These should have wind-up protection set up (which they don't).
But, apart from
46 matches
Mail list logo
