On Monday 21 February 2011 17:41:10 Jack Mermod wrote:
> I wasn't planning to get into an argument over the 777-200, but yes it
> does have an unrealistic FDM.
>
> See here:
>
> http://img219.imageshack.us/img219/891/picture5mj.png
>
>
> Are you telling me this is realistic too?
>
> Check Six,
>
On Thursday 24 February 2011 11:41:43 Geoff McLane wrote:
> Hi,
>
> Re: http://www.geoffair.net/tmp/tilted-001.png (updated)
>
> Thanks Ron, and Stuart, for the tailwind c172.xml
> change. As stated, all tests so far on this are great...
> with due care can now taxi, takeoff and land with a
> modes
On Friday 25 February 2011 08:13:57 Geoff McLane wrote:
> Hi Ron,
>
> Many thanks for taking the time to explain. I 'think'
> I understand a little more ;=))
>
> As you state, using sine(alpha) continues to allow
> up and down moments as you flex say the elevator with
> a tail wind, but prevents th
On Sunday 27 February 2011 10:05:21 Arnt Karlsen wrote:
> ..depending on what data you drop into or ask for from the fdm,
> speeding up telnet _may_ also make you speed up the fdm so it
> _can_ properly solve the problems you feed it:
> --model-hz=n Run the FDM this rate (iterations per second)
On Monday 28 February 2011 07:06:08 Harry Campigli wrote:
> I added a dme to the 737NG-600 model. I have external IO that writes the
> freq direct to the property tree, from a narco dme.
>
> In the dme.xml file in Aircraft instruments i deleted the actions where
> sources the freq from nav 0 freq.I
On Thursday 31 March 2011 02:13:58 Alan Teeder wrote:
> --
> From:
> Sent: Wednesday, March 30, 2011 3:57 PM
> To: "FlightGear developers discussions"
>
> Subject: [Flightgear-devel] Calculating free stick position and forces
>
> > Ok, here are a
On Saturday 02 April 2011 17:52:58 Roberto Inzerillo wrote:
> > It's an issue with the finite precision of floating point variables.
> > Everyone is suprised when first seeing this. Only values which happen to
> > be a sum of "binary fractions" (e.g. 1/2 + 1/4 + 1/8) can be represented
> > accurate
Martin: Can we PLEASE ungzip apt.dat in the repository so we can track changes
to it!
On Wednesday 06 April 2011 21:06:40 J. Holden wrote:
> First and foremost, a huge THANK YOU goes out to Martin Spott. Without his
> help, including giving access to resources I otherwise would not have, I
> would
On Thursday 07 April 2011 10:52:54 Ron Jensen wrote:
> The problem is in the definition of KVUO in apt.dat. It is specified as
> having non-precision markings, but there is not room for those marking. It
> should have basic marking instead. The runway is 3263 feet minus 762 feet
> for
On Thursday 07 April 2011 11:32:00 J. Holden wrote:
> Ron:
>
> Thanks for the help with the airports, I'll recompile the scenery to fix
> the problem. I'm still learning my way around TerraGear.
>
> Is the problem with KVUO's definition, or rather within the program?
>
> While a quick aerial check
On Friday 08 April 2011 13:44:49 Martin Spott wrote:
> Martin Spott wrote:
> > Ron Jensen wrote:
> >> Martin: Can we PLEASE ungzip apt.dat in the repository so we can track
> >> changes to it!
> >
> > The GIT repository you mean ? Ask those who decided do
On Wednesday 20 April 2011 18:43:11 Pascal J. Bourguignon wrote:
> Ryan M writes:
> > Something I've always thought about is an official aircraft repository
> > that contained non-GPL2 aircraft- straight from the authors, of course.
> > There are many aircraft for FlightGear that are not GPL-licen
On Sunday 24 April 2011 15:00:41 Pavel Cueto wrote:
> Hello to all
>
> I'm developing with a friend the PZL M18B "Dromader" in JSBSim, doing this
> first with aeromatic generated data; and now, we are mixing them with real
> aircraft data from very reliable sources. However, the engine behavior
> s
On Monday 25 April 2011 12:10:26 Hal V. Engel wrote:
snip
> The supercharger model used by JSBSim assumes a turbo charger so the power
> and fuel consuption curves are incorrect for an engine driven supercharger
> where more horse power (and fuel) are used to drive the supercharger.
The supercha
On Wednesday 11 May 2011 15:14:01 Csaba Halász wrote:
> On Wed, May 11, 2011 at 6:38 PM, Vivian Meazza
>
> wrote:
> > Christian Schmitt wrote
> >
> >> The stopways still work for me here, so there is maybe something wrong
> >> in your fgdata?
> >
> > I have absolutely up-to-date data and source fr
On Tuesday 17 May 2011 21:35:59 Jon S. Berndt wrote:
> > What is the requirement from the FlightGear side for an atmosphere
> > model?
> > I'd like to remove the capability to drive the JSBSim standard
> > atmosphere
> > model from FlightGear, but first I'd like to get a clear picture of how
> > Fl
On Wednesday 18 May 2011 18:39:50 Heiko Schulz wrote:
> I would like to have the old fdm back, maybe it is possible to have another
> version with the easy-to-fly-fdm beside the original one.
>
> Any opinions about, something I missed?
>
> Heiko
Helijah's workflow should make it dead simple to cr
On Monday 23 May 2011 17:38:20 Jason Cox wrote:
> Hi all,
> This is way OT as its not flight related but a possible use for
> Flightgear.
>
> I have a friend who is motor sport and just completed a race where he
> has taken on board HD video and also has the GPS data from the event.
>
> I have a pl
I just built FG and Simgear from gitorious/next today and I can no longer move
the Frame-Rate number or the Left-Out properties. Dialogs still seem to move
and resize O.K.
Thanks,
Ron
--
vRanger cuts backup time in half
On Friday 03 June 2011 01:49:30 Gaurav Tendolkar wrote:
> I am modelling an battery powered electric motor MAV.
> In JSBsim the battery does not discharge.
>
> 00178 FGElectric::CalcFuelNeed(void)00179 {00180 return 0;00181 }
>
> now i want to write a code where fuel is the power supplied by batt
On Wednesday 15 June 2011 07:36:51 Csaba Halász wrote:
> On Mon, Jun 13, 2011 at 9:50 PM, ThorstenB wrote:
> > the final GUI bits for a new feature are now in fgdata - the last
> > feature addition for the 2.4 release from my part... You can
> > download/update scenery directly from FlightGear now
There are some valuable features in JSBSim now it would be nice to have in the
release. Could someone please sync the latest JSBSim into the flightgear code
please?
Thanks,
Ron
--
EditLive Enterprise is the world's most
On Saturday 18 June 2011 21:00:41 Jon S. Berndt wrote:
> Here's an example from Hal's P-51D Mustang. This is from an old version, so
> it may have changed by now, but it illustrates the approach. In the
> section of the config file - but outside of any
> element - is this definition of qbar due t
On Sunday 19 June 2011 15:04:11 Hal V. Engel wrote:
> I need to over ride one of the default menu items so that I can use a
> custom menu. After some effort I have figured out what needs to be changed
> in the property tree. The code looks like this:
>
> # Disable the menu item "Equipment > radi
On Sunday 19 June 2011 17:55:25 Hal V. Engel wrote:
> On Sunday, June 19, 2011 02:15:54 PM Ron Jensen wrote:
> > http://www.mail-archive.com/flightgear-devel@lists.sourceforge.net/msg302
> >08 .html gui.menuBind("radio", "dialogs.Radio.open()");
>
> Thanks
On Sunday 19 June 2011 10:50:01 John Denker wrote:
> On 06/19/2011 06:46 AM, Jon S. Berndt wrote:
> > Maybe I've gone wrong somewhere here, but something similar might work.
> > Also, in situations like a flat spin or tail slide this probably falls
> > apart!
>
> Let's postpone discussion of exotic
On Saturday 25 June 2011 12:28:14 David Slocombe wrote:
> Hi,
>
> Currently I do not even have a working fg on my machine, but I continue
> to peek at the flightgear-devel list occasionally. Today I saw this
> discussion of moving the aircraft directories to individual SVN repos
> instead of git.
On Sunday 26 June 2011 14:37:09 Jon S. Berndt wrote:
> > -Original Message-
> > From: Alan Teeder [mailto:***]
> >
> > I have some questions regarding how data gets from the joystick, keypad
> > etc to the fdm. No doubt I will feel foolish when it is pointed out that
> > it is documented so
On Wednesday 29 June 2011 05:51:07 AJ MacLeod wrote:
> On Wed, 29 Jun 2011 10:39:55 +0100
>
> Vivian Meazza wrote:
> > > * English Electric Lightning: I believe the plane should be able to
> > > reach Mach 2 around 36.000 ft in level flight - even in a descending
> > > pattern, I was never able to
On Friday 17 June 2011 01:30:45 Erik Hofman wrote:
> On Thu, 2011-06-16 at 22:23 -0500, Jon S. Berndt wrote:
> > I am very close to committing the new atmosphere code (and the new
> > FGWinds) to JSBSim cvs. However, it would be prudent to first get a
> > glitch or two fixed and then grab that code
On Friday 01 July 2011 00:30:11 Erik Hofman wrote:
> On Thu, 2011-06-30 at 10:11 -0600, Ron Jensen wrote:
> > There have been a few bug fixes to JSBSim since this sync, notably:
> >
> > src/FDM/JSBSim/models/flight_control/FGActuator.cpp
> > src/FDM/J
On Thursday 30 June 2011 04:41:13 AJ MacLeod wrote:
> On Wed, 29 Jun 2011 23:28:42 +0100
>
> "Vivian Meazza" wrote:
> > Further research indicates that the F1A, modeled here was NOT capable of
> > M2.0 at 36000ft. M1.9 seem more likely. Moreover, due to structural and
> > stability problems the F1
On Saturday 02 July 2011 17:52:23 Chris Wilkinson wrote:
> I re-read the messages on starting and I see...
>
> loadxml: reading '' denied (unauthorized access)
/**
* An fgcommand to allow loading of xml files via nasal,
* the xml file's structure will be made available within
* a property tree
On Monday 04 July 2011 08:38:26 John Wojnaroski wrote:
> toOsg
Converts SG Vectors to OSG Vectors
simgear/simgear/math/SGVec2.hxx
simgear/simgear/math/SGVec3.hxx
simgear/simgear/math/SGVec4.hxx
toOsg(const SGVec2d& v)
{ return osg::Vec2d(v[0], v[1]); }
--
toOsg(const SGVec2f& v)
{ return osg::V
On Thursday 28 July 2011 18:54:21 HB-GRAL wrote:
> Hi Geos
>
> Can someone explain me why we use
>
> lat="N37 42.807"
> lon="W122 12.963"
>
> in parking.xml and groundnet.xml
>
> and not lat/lon formats like we use it for runways and it is used in
> apt.dat and other data files ?
>
> Than
On Monday 15 August 2011 11:18:53 Gary Neely wrote:
> Looks like a great start. The first thing I would do before anything
> else is make sure your CG is positioned reasonably. In your SF-25, the
> CG is much too far back; given the forward-swept wings, it looks to be
> about a meter behind MAC:
>
On Monday 05 September 2011 10:10:27 Curtis Olson wrote:
> Are there any cmake based build instructions available anywhere? I'm not
> seeing them.
> I'm just hoping the cmake jocks will put themselves in the position of
> non-cmake jocks and help ease the transition from multiple fronts for man
On Friday 09 September 2011 11:33:17 Curtis Olson wrote:
> Hi Yves,
>
> The general approach that genapts uses this.
>
<...>
> We get to pick the order we process the airport surface objects, so we pick
> the runways first, and probably the biggest runways before the smaller
> runways. Then the bi
On Thursday 22 September 2011 16:43:32 ThorstenB wrote:
> On 23.09.2011 00:09, Durk Talsma wrote:
> > I did recalibrate my joystick, but upon checking that, the brake
> > function appears to work normally.
> > as shown here, I did have a severe tire problem after takeoff. :-)
> >
> > http://www.du
On Friday 23 September 2011 14:57:34 Durk Talsma wrote:
> On 23 Sep 2011, at 00:43, ThorstenB wrote:
> > Hmm, but this actually means you have a brake problem after all. Only
> > the brake temperature is simulated - smoke is triggered for overheated
> > disc brakes. It's almost impossible that the
They are homebrewed. The guts came out of a Saiteck 290 Pro joystick and the
pedals are Thrustmasters. An hour with a soldering iron would fix the
reversed pot, but 30 seconds in a text editor made it work just fine. :)
http://www.jentronics.com/fgfs/simpit/pedal.jpg
On Sunday 25 September 2011
On Sunday 25 September 2011 01:36:25 Scott Hamilton wrote:
> Greetings,
>
> I've noticed two small problems with the current Git
> "next" (as at 2011-09-25), is anyone else seeing these?
>
> 1. the JSBsim
> per-engine /fdm/jsbsim/propulsion/engine[]/fuel-used-lbs property has
> disappeared
I see
Sun, 2011-09-25 at 13:49 -0600, Ron Jensen wrote:
> > On Sunday 25 September 2011 01:36:25 Scott Hamilton wrote:
> > > Greetings,
> > >
> > > I've noticed two small problems with the current Git
> > > "next" (as at 2011-09-25), is any
On Tuesday 27 September 2011 15:53:26 Curtis Olson wrote:
> a heavier than air balloon ...
Would that be a Led Zeppelin?
:)
Ron
--
All the data continuously generated in your IT infrastructure contains a
definitive re
On Thursday 29 September 2011 14:32:54 Robbo wrote:
> Hi,
>
> I am trying to familiarise myself with Flightgear's source code so that I
> may try and contribute. I am currently looking at the 'groundradar'
> instrument module and there is something within that is causing me some
> confusion.
>
> E
On Tuesday 18 October 2011 15:56:54 Cedric Sodhi wrote:
> On Tue, Oct 18, 2011 at 09:46:58PM +0200, Gijs de Rooy wrote:
> >Hi all!
> >
> >> Cedric wrote:
> >> ManDay, on behalf of the Split-Team ^^
> >>
> >> ThorstenB wrote:
> >> I don't think this is what we agreed upon.
>
On Sunday 06 November 2011 13:35:11 Anders Gidenstam wrote:
> Now that we have per-aircraft repositories I plan to add my "source"
> material (blender, svg, datcom, octave, gerris etc files) below a dev
> directory in the aircraft's repository. Probably further structured in
> FDM, models, ... subd
On Monday 28 November 2011 11:20:03 Eric van den Berg wrote:
> On 11/28/2011 06:14 PM, Adrian Musceac wrote:
> > On Monday, November 28, 2011 18:31:42 Eric van den Berg wrote:
> >> For GA (what I have handy right now):
> >> The good old Garmin 400 series: VOR/LOC:-103.5dBm, GS:-87dBm
> >> Avidyne
On Tuesday 06 December 2011 07:39:48 Torsten Dreyer wrote:
t.
>
> Ron Jensen is the master of the JSBSim piston engine code. IIRC he has
> the supercharger model on his backlog, maybe TIT will be part of his
> solution..
The current supercharger code is old, and strictly RPM based,
On Thursday 08 December 2011 07:07:58 Geoff McLane wrote:
> I guess the only thing is concerning 'closed'
> airports. Should they be in apt.dat at all?
>
> But if they are retained for 'historic', or
> other purposes, it would be good if they were
> all consistent...
Just because an airport is 'cl
On Friday 09 December 2011 16:49:14 HB-GRAL wrote:
> Am 08.12.11 13:36, schrieb HB-GRAL:
> > Hi all
>
> Hi again
>
> About marking "closed" airports in apt.dat:
>
> - marking the name with "[X] " might be closer to charts I guess and
> most airports marked as closed in apt.dat comes with the x
> -
On Sunday 18 December 2011 04:02:01 Martin Spott wrote:
> Patrick Callahan wrote:
> > What can be said about the flight dynamics of the C172P model?
> > Is it accurate? If not, how could it be improved?
>
> The response varies _much_ depending on whom you ask :-)
> Personally I'm quite confident
Sorry to respond to myself, but wanted to add some detail:
Mass Properties Report (English units: lbf, in, slug-ft^2)
WeightCG-XCG-YCG-Z
Base Vehicle 1500.041.0 0.036.5
0 Pilot 1
Adding another adult in the front seat, and two large kids/small ladies in the
back seat, as well as 50 lbs of luggage and a near full load of fuel:
Mass Properties Report (English units: lbf, in, slug-ft^2)
WeightCG-XCG-YCG-Z
Base Vehicle
On Wednesday 21 December 2011 14:50:39 Stuart Buchanan wrote:
> On Wed, Dec 21, 2011 at 5:53 PM, Torsten Dreyer wrote:
> >> Agreed - that's a mistake in my checkin. I will correct it.
> >>
> >> -Stuart
> >
> > OK - one more.
> >
> > velocity including the propulsion induced
> > velocity.
> >
On Wednesday 21 December 2011 04:09:35 Stuart Buchanan wrote:
> On Wed, Dec 21, 2011 at 11:00 AM, Torsten Dreyer wrote:
> >> I prefer manually syncing and checking that the changes are valid,
> >> rather than blindly over-riding what we've already got.
> >
> > Hi Stuart,
> >
> > this
> > -
http://wiki.flightgear.org/Special:RecentChanges
Someone is spamming our wiki. Anyone around with admin rights?
Thanks,
Ron
--
Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex
infrastructure or v
On Friday 10 February 2012 04:08:32 Torsten Dreyer wrote:
> Hi all,
>
> for our release of version 2.6.0 next week, we have a few open items on
> our checklist and I am kindly asking for support to get them done:
>
> 1. How are our release candidates performing? Are there any release
> blocking bug
On Thursday 16 February 2012 02:07:53 Chris Forbes wrote:
> ---
> src/FDM/JSBSim/models/propulsion/FGPiston.cpp |3 +--
> 1 files changed, 1 insertions(+), 2 deletions(-)
>
> diff --git a/src/FDM/JSBSim/models/propulsion/FGPiston.cpp
> b/src/FDM/JSBSim/models/propulsion/FGPiston.cpp index 0f47
On Sunday 19 February 2012 15:28:05 Scott wrote:
> On Sun, 2012-02-19 at 14:40 -0700, dave perry wrote:
> > On 02/19/2012 02:06 PM, Torsten Dreyer wrote:
> > > Am 19.02.2012 21:54, schrieb dave perry:
> > >> Hi All,
> > >>
> > >> I have been gone for almost a year. I want to start new source trees
On Monday 27 February 2012 13:15:39 Martin Spott wrote:
> Martin Spott wrote:
> > I don't have an idea, why - maybe that's been the default in PPE, AC3D
> > or whichever tool. Jon made me aware of this issue many years ago
> > (when we started filling the scenery objects database) and, as far as I
On Saturday 03 March 2012 21:14:45 Ian Dall wrote:
> On Fri, 2012-03-02 at 12:39 -0600, Curtis Olson wrote:
> > Hi Ian,
> >
> > If you wish to set your own tower position, it's pretty straight
> > forward and can be done manually or via nasal or probably a few other
> > mechanisms.
> >
> >
> > By d
On Monday 05 March 2012 02:53:59 Francesco Angelo Brisa wrote:
> Hi
>
> I was going to take some time to put my hands on some aircraft, before
> beginning I have some little questions:
>
> Aerostar 700:
> * The airspeed indicator looks like to be a default one (With no colored
> bars for velocities
On Tuesday 06 March 2012 03:33:55 Francesco Angelo Brisa wrote:
> Thanks for the answers;
>
> based on you suggestions I think I will add instruments in the C337 way
> (With a little thin glass in front of them with almost no reflection
> effect).
>
> Cheers
> Francesco
I thought the overwhelming
On Friday 09 March 2012 14:45:45 Adam Dershowitz, Ph.D., P.E. wrote:
> Few, but at least one:
>
> http://en.wikipedia.org/wiki/ERCO_Ercoupe
>
>
> --Adam
As the FDM maintainer for the Flightgear version of this airplane I have
searched the interwebs for details on its rudder system and came up wit
On Monday 19 March 2012 07:22:52 Renk Thorsten wrote:
> > You ought to be able to initialize any vehicle at any altitude (up to and
> > even beyond 3000 km). At this time, only the Vostok has control jets, as
> > far as I know.
>
> Actually I can not do that. Trying to initialize the ufo at 1.000.0
On Monday 19 March 2012 07:22:52 Renk Thorsten wrote:
> > You ought to be able to initialize any vehicle at any altitude (up to and
> > even beyond 3000 km). At this time, only the Vostok has control jets, as
> > far as I know.
>
> Actually I can not do that. Trying to initialize the ufo at 1.000.0
On Tuesday 03 April 2012 18:38:55 syd adams wrote:
> > I assume that users complaining about ugly models is the only means to
> > make many of the modellers fix their stuff.
> >
> > Cheers,
> > Martin.
>
> True :). Although it would be a great help to know what needs changing
> ... apparentl
On Monday 09 April 2012 15:05:58 Torsten Dreyer wrote:
> Hi,
>
> what is our current policy for updates to nav.dat? Do we commit changes
> to the binary gzip'ed file or do we have a central repository for the data?
>
> Would it make sense to have the unzip'ed file in git and zip it for the
> releas
On Thursday 12 April 2012 16:11:14 gap...@gapalp.net wrote:
> Wow, this works better, is simpler code, and is much
> faster! Plus it will be easy to allow the user to pass configurations such
> as range and airport type as mentioned, to suit GA planes or
> heavies. AirportInfoFilter
> filter;
On Friday 18 May 2012 10:59:22 Alan Teeder wrote:
> On the subject of frames rates I have a couple of questions.
> 2. Is there a mechanism for making the core - fdm, afcs, equations of
> motion etc. run at a higher priority than the rest of the simulation?
The JSBSim FDM and systems coded in JSBS
On Thursday 24 May 2012 01:26:35 Burin Sungketkit wrote:
> I've checked the Total Aero Moment from /fdm/jsbsim/moments/m-aero-lbsft
> and compared with the summation of all Cm from aerodynamics section.
>
> Do these two properties have to be equal or not? (I think it should be
> equal).
>
> This ha
Would it be possible to sync JSBSim and flightgear?
There are a couple of changes to JSBSim I'd like to get into the next
flightgear:
New tags for the piston engine model:
Allows a power penalty for boosting manifold pressure. This can be adjusted
at run-time by changing the boostloss-fa
>From eng_io320.xml:
550.0
The engine needs to reach 440 RPM to start (80% of 550, the coded idle RPM) if
you're reaching above 440 RPM make sure you've engaged fuel and magneto
controls. If you're not reaching that perhaps you need to look into the
controlling nasal as th
tart the engine.
>
> Thanks for your help!
>
> Cheers,
> Vik
>
> On 06/01/2012 02:16 AM, Ron Jensen wrote:
> >> From eng_io320.xml:
> >
> > 550.0
> >
> > The engine needs to reach 440 RPM to start (80% of 550, the coded idle
&
On Wednesday 05 September 2012 05:04:06 Martin Spott wrote:
> Scott wrote:
> > But more seriously, I'm no license guru, and you picked one of the main
> > points I'm not clear on, the original CC in this example is
> > "Share-alike" and "Derived works allowed with attribution".
>
> It really depend
On Saturday 22 September 2012 14:04:10 Matevž Jekovec wrote:
> Hi guys.
>
> I'm using Logitech force 3d joystick (force-3d-pro.xml) and the Y hat is
> inversed. When I do hat up, it actually looks down and vice versa. Is
> this the expected behaviour?
Its personal preference, I think. I like the h
On Monday 08 October 2012 02:20:25 James Turner wrote:
> On 8 Oct 2012, at 07:47, ThorstenB wrote:
> > On 7 Oct 2012, at 15:19, Stuart Buchanan wrote:
> >> The use-case is to enable or disable particular views if you don't want
> >> to have to spend ages cycling through them.
> >
> > I also quite l
On Friday 19 October 2012 04:37:50 kunai...@yahoo.co.jp wrote:
> Thank you Jon for your reply.
> I am still a bit confused. Which one of the two is correct ?
>
> 1) YAsim or JSBsim is used to specify only aircraft flight model
> parameters and the
> physics flight dynamics engine is a separate co
On Sunday 28 October 2012 23:01:04 kunai...@yahoo.co.jp wrote:
> Hi - I'm kunai. I have some questions about Aeromatic
> that hopefully some of you
> can give me answers.
> 1) Is it possible to use Aeromatic to make a helicopter model ?
There is no 'aeromatic' support for JSBSim helicopters at thi
I took a quick look through the FGData Aircraft directory today and came up
with a list of some 27 JSBSim piston engines that still seem to be using
either the old aeromatic default values for idle manifold pressure (minmp)
or suspiciously low values.
As time permits this week I intend to take a d
On Tuesday 11 December 2012 00:55:35 Eric van den Berg wrote:
> Ron,
>
> From experience: the lyco IO540 idles at 14-15 inHG, 900RPM (MT-prop with
> P-880-xx governor)
>
> Eric
>
Thanks Eric,
The JSBSim piston engine model is missing something, probably Mach effect
through the intake valve, so m
On Tuesday 11 December 2012 09:46:10 Eric van den Berg wrote:
> I see.
> Looking at the code (I think) I can see you are trying calculate the
> pressure losses in the injector/throttle valve, "airbox" and inlet tubes.
> Using throttle position and engine speed (was expecting cylinder
> displacement
:
> net heat of combustion of AVGAS, all grades : min. 43.5 MJ/kg, 44 typical
> density of AVGAS: 710 at 15degC
> C_p_AVGAS = 2.065 kJ/kg K @20degC, approx linear to 2.710 @140degC
>
> hope this might improve accuracy (a bit),
>
> Cheers,
>
> Eric
>
> On 12/11/2012 07:
:
> net heat of combustion of AVGAS, all grades : min. 43.5 MJ/kg, 44 typical
> density of AVGAS: 710 at 15degC
> C_p_AVGAS = 2.065 kJ/kg K @20degC, approx linear to 2.710 @140degC
>
> hope this might improve accuracy (a bit),
>
> Cheers,
>
> Eric
>
> On 12/11/2012 07:
On Sunday 13 January 2013 16:38:29 Jon S. Berndt wrote:
> > Yes, i had hoped, too. However, as you mentioned, many new features
> > have been developed and that violates our feature freeze rule,
> > unfortunately.
> > That rule has been introduced for exactly this situation: not to raise
> > some l
On Saturday 08 December 2012 12:12:23 Ron Jensen wrote:
> I took a quick look through the FGData Aircraft directory today and came up
> with a list of some 27 JSBSim piston engines that still seem to be using
> either the old aeromatic default values for idle manifold pressure (mi
Hi Chris,
Flightgear will already visualize external data, I've done it, just not that
often or recently and I can't remember the steps. Have a look at
Docs/readme.IO and Docs/readme.protocol and look at the prewritten protocol
files in Protocol/
Ron
On Wednesday 17 April 2013 02:31:21 Christ
On Sun, 2008-12-14 at 12:56 -0700, John Denker wrote:
> On 12/13/2008 06:16 PM, Jon S. Berndt wrote:
>
> > The manual should allow some fairly thorough testing.
>
> OK, good. I reckon thorough testing would be helpful.
>
> As several others have mentioned, before delving too
> deeply into the
On Mon, 2008-12-15 at 22:15 -0700, John Denker wrote:
> On 12/15/2008 04:31 PM, Tom Betka wrote a long note making
> a number of good points.
>
> Thanks!
>
> Let me join the discussion here:
>
> > HP = [(2pi)*(Torque)*(RPM)] / 33000 [1]
>
> Right. That's the formula I've been using whe
I got rushed as I finished this e-mail and failed to properly proof read
it. I apologize for my errors.
On Mon, 2008-12-15 at 23:43 -0700, Ron Jensen wrote:
> On Mon, 2008-12-15 at 22:15 -0700, John Denker wrote:
> > On 12/15/2008 04:31 PM, Tom Betka wrote a long note making
> > a
On Tue, 2008-12-16 at 10:35 -0500, bitwibiff wrote:
>I've also noticed the c310's ceiling is apparently excessive in the
> pre-release, with the rpm' ed version of fgfs it seemed more realistic,
> topping out at ~ 13,000 ft.
>
> If there's any more information I can supply I'll happily try
On Tue, 2008-12-16 at 00:12 -0700, John Denker wrote:
> On 12/15/2008 11:43 PM, Ron Jensen wrote:
>
> > As mentioned above, the MAP readings are not a "bug"
>
> Well, then we need to find another word for it.
>
> Perhaps we can call it a counterintuitive, unrea
On Tue, 2008-12-16 at 05:12 -0700, John Denker wrote:
> OK, let's back up and take another look at this.
[snip]
> Let's start with some basic science. Consider a RW piston engine
> with a _fixed_ impedance in the induction system. That means
> no governor and some fixed throttle position, fixed f
The attached patch isn't ready to go in, but I was hoping to get some
comments on it. It changes the power calculation to use the Gagg-
Farrar Power Drop Off Rule from "Performance of Light Aircraft" by John
Lowry.
The Gagg-Farrar equation uses a constant to express the power drop off
of a piston
On Wed, 2008-12-17 at 00:25 -0700, Ron Jensen wrote:
> The attached patch isn't ready to go in, but I was hoping to get some
> comments on it.
I guess it would help to include the header file patch :)
Index: FGPiston.h
=
On Fri, 2008-12-19 at 23:30 +, Stuart Buchanan wrote:
> Csaba wrote:
> > On Fri, Dec 19, 2008 at 11:38 PM, Stuart Buchanan wrote:
> > >
> > > The patch below backs out that change. Unfortunately this means the change
> > > to the cloud coverage due to changing METAR will not be reflected in the
On Fri, 2008-12-19 at 23:28 -0700, John Denker wrote:
> Consider the following scenario: The Sim World c182rg is sitting on
> the runway at KSFO. The propeller control is pulled back, so that the
> engine is operating at relatively low revs, about 1750 RPM in
> contrast to redline which is 2400 RPM
On Thu, 2008-12-18 at 19:47 -0700, John Denker wrote:
> On 12/17/2008 12:18 AM, Ron Jensen wrote:
>
> > I've made the constant "C" a configurable item, but I don't have a good
> > name for it. The patch calls it but there must be a better
> > name...
On Sat, 2008-12-20 at 04:46 -0700, John Denker wrote:
> On 12/20/2008 02:44 AM, Ron Jensen wrote:
> > John,
> >
> > You've just convinced me you don't have a clue what is happening inside
> > this code.
>
> You keep saying that. Even if it were true
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