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sync with some READMEs that originate in main CVS

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j4strngs 2002-10-28 20:14:53 +00:00
parent fca24c0930
commit 964f140378
3 changed files with 108 additions and 29 deletions

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@ -88,3 +88,26 @@ Moving Map Example:
your current location. Atlas is a really nifty program with many
neat options such as the ability to generate and use background
bitmaps that show the terrain, cities, lakes, oceans, rivers, etc.
HTTP Server Example
You can now interact with a running copy of FlightGear using your
web browser. You can view all the key internal variables and even
change the ones that are writable. If you have support in your
favorite [scripting] language for interacting with an http server,
you should be able to use this as a mechanism to interface your
script with FlightGear.
Start up fgfs with the --httpd=<port#> option:
For example:
fgfs --httpd=5500
Now point your web browser to:
http://host.domain.name:5500/
When a value is displayed, you can click on it to bring up a form
to assign it a new value.

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@ -1,42 +1,53 @@
JSBSim
JSBSim is an ongoing attempt at producing an OO Flight Dynamics Model (FDM)
to replace LaRCsim as the default FDM for FlightGear. It can also be used
standalone.
JSBSim is an ongoing attempt at producing an OO Flight Dynamics Model
(FDM) to replace LaRCsim as the default FDM for FlightGear. It can
also be used standalone.
JSBSim uses config files to represent aircraft and engines. Also, the flight
control system is described in the config file. Normally, for use with
FlightGear, the config files are named this way:
<FG_ROOT>/Aircraft/<aircraft name>/<aircraft name>.cfg . Engines are named
like this: <FG_ROOT>/Engines/<engine name>.dat .
JSBSim uses config files to represent aircraft, engines, propellers,
etc. Also, the flight control system is described in the config
file. Normally, for use with FlightGear, the config files are named
this way [case is significant]:
Aircraft and engine config files are present in the FGFS-Base package which
must be downloaded from the FlightGear web site at www.flightgear.org or one
of the mirror sites listed there.
<FG_ROOT>/Aircraft/<aircraft name>/<aircraft name>.xml
Engines are named like this:
<FG_ROOT>/Engines/<engine name>.xml
Aircraft and engine config files are present in the FGFS Base package
which must be downloaded. See the FlightGear web site for more
information.
How to run FGFS using JSBSim
All the various FDMs are currently compiled into FGFS. You can specify which
FDM you want at run time. You can also specify which aircraft you want.
Currently, for JSBSim only the X-15 is available, and possibly the C-172.
Here is an example command line used to start up FlightGear using JSBSim as
the FDM:
All the various FDMs are currently compiled into FGFS. You can specify
which FDM you want at run time. You can also specify which aircraft
you want. Currently, for JSBSim only the X-15 and C-172 aircraft are
available. Here is an example command line used to start up FlightGear
using JSBSim as the FDM:
fgfs --fdm=jsb --aircraft=X15 --units-feet --altitude=60000 --uBody=2000 --wBody=120
[Note: uBody is the forward velocity of the aircraft, wBody is the downward
velocity - from the aircraft point of view. This essentially means that the
aircraft is going forward fast and has an angle of attack of about 4 degrees
or so]
or,
The above command line sets up the initial velocity and altitude to allow
the X15 to glide down. Note that if you fire up the engine, it will burn for
only about two minutes and then run out of fuel - but you will go very, very
fast!
fgfs --fdm=jsb --aircraft=c172
Check out the JSBSim home page at www.hal-pc.org/~jsb/flightsim.html. Please
report any bugs to jsb@hal-pc.org, or apeden@earthlink.net, or post them to
the fgfs-devel mailing list.
[Note: uBody is the forward velocity of the aircraft, wBody is the
downward velocity - from the aircraft point of view. This essentially
means that the aircraft is going forward fast and has an angle of
attack of about 4 degrees or so]
JSBSim is written by Jon S. Berndt and Tony Peden with contributions by
other FlightGear programmers, as well.
The first command line sets up the initial velocity and altitude to
allow the X15 to glide down. Note that if you fire up the engine, it
will burn for only about two minutes and then run out of fuel - but
you will go very, very fast! The second command line example will
start up the C172 on the end of the runway.
Check out the JSBSim home page at http://jsbsim.sf.net. Please report
any bugs to jsb@hal-pc.org, or apeden@earthlink.net, or post on the
jsbsim web site using the SourceForge bug tracking system for the
project.
JSBSim is written by Jon S. Berndt and Tony Peden with contributions
by other FlightGear programmers, as well.

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Docs/README.fgjs Normal file
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fgjs -- a small program for creating a basic FlightGear joystick
configuration
fgjs requires plib to be installed on your system. If you've
successfully installed and built FlightGear then you should be
all set
Build instructions
At this point, fgjs has only been built and tested under Linux,
so the makefile is a simple one. cd into the directory in which
the fgjs source resides and type 'make' and, if you are lucky,
all will go well. You can e-mail me (apeden@earthlink.net) any
changes needed to make it work on other systems. It's quite
possible that this program will become part of the regular
FlightGear package so
Running
Set up your joystick and make sure it works with js_demo from the
FlightGear distribution. Upon executing fgjs, it will prompt you
to move the control you wish to use for elevator, ailerons, etc.
Note that when being prompted for an analog control, you can skip
the current one by pressing any button and vice-versa when being
prompted for a button. You may want to do this if for, as an
example, rudder if you have only one joystick or your joystick
doesn't have as many analog axes as FlightGear supports.
Once you've run with this configuration, you may wish to tune
the dead-band a bit (see fgfsrc.js) as the default, 0.02, may
be too narrow for your particular hardware/taste.
And last, but not least, this thing needs a GUI!!!! Hopefully,
the joystick handling code and interface code are separate
enough that using that a GUI version could be built using this
source as a starting point.