RE: [Flightgear-devel] Spitfire - new release

2004-08-13 Thread Vivian Meazza
Andy Ross wrote: > Sent: 12 August 2004 19:58 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Spitfire - new release > > > OK, Melchior helped to debug this via chat while I was > working on cell phone UI bugs at work. :) > > It turns

Re: [Flightgear-devel] Spitfire - new release

2004-08-12 Thread Andy Ross
OK, Melchior helped to debug this via chat while I was working on cell phone UI bugs at work. :) It turns out to have been a pair of typos in fuel.nas that were causing all the problems. What I *read* wasn't what the code was actually doing, which explains all the confusion. This one, though, is

Re: [Flightgear-devel] Spitfire - new release

2004-08-12 Thread Andy Ross
Vivian Meazza wrote: > This is, I believe, due to a bug at line 67 of the script > ~/data/nasal/fuel.nas which improperly sets the tank property > "kill-when-empty". Haven't we already been here and thrown out this explanation? Here is line 67: if(t.getBoolValue("kill-when-empty")) { outOfFuel

[Flightgear-devel] Spitfire - new release

2004-08-12 Thread Vivian Meazza
Eric has kindly uploaded the most recent release of the Spitfire model to cvs. If you haven't already noticed, this release adds a fuel system with Upper and Lower tanks (which are interconnected), priming pump, fuel cocks, and a fuel gauge. Unfortunately, there are three problems with this relea

Re: [Flightgear-devel] Spitfire

2004-07-27 Thread Bernie Bright
Vivian Meazza wrote: plib.ssgAux has a particle system that can simulate smoke. Attach one to an animation object and there you have it. Any takers? Someone (David Megginson?) mentioned the particle system when the subject of smoke was brought up some time ago. It may have been me but nothin

RE: [Flightgear-devel] Spitfire

2004-07-27 Thread Vivian Meazza
> -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Bernie Bright > Sent: 27 July 2004 05:41 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Spitfire > > > Vivian Meazza wrote: >

Re: [Flightgear-devel] Spitfire

2004-07-26 Thread Bernie Bright
Vivian Meazza wrote: Ampere K. Hardraade wrote Sent: 26 July 2004 03:13 To: FlightGear developers discussions Subject: Re: [Flightgear-devel] Spitfire To create smoke, we will need two things: smoke emitter and smoke object. [snip] Good analysis. How much of this already exists, either in the

RE: [Flightgear-devel] Spitfire

2004-07-26 Thread Vivian Meazza
Ampere K. Hardraade wrote > Sent: 26 July 2004 03:13 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Spitfire > > To create smoke, we will need two things: smoke emitter and smoke object. > > The smoke emitter will allow the user to set the

Re: [Flightgear-devel] Spitfire

2004-07-25 Thread Ampere K. Hardraade
I hope so too, but the fact is: I'm not a programmer. Regards, Ampere On July 25, 2004 10:53 pm, Jon Berndt wrote: > I really hope you can do this. Smoke and fire are important for the X-15, > too. ___ Flightgear-devel mailing list [EMAIL PROTECTED] ht

RE: [Flightgear-devel] Spitfire

2004-07-25 Thread Jon Berndt
> To create smoke, we will need two things: smoke emitter and smoke object. I really hope you can do this. Smoke and fire are important for the X-15, too. :-) Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/

Re: [Flightgear-devel] Spitfire

2004-07-25 Thread Ampere K. Hardraade
To create smoke, we will need two things: smoke emitter and smoke object. The smoke emitter will allow the user to set the following properties: - X, Y, Z coordinate relative to the aircraft. This is the location at which the smoke objects will be created. - vector at which the smoke is emitted.

RE: [Flightgear-devel] Spitfire

2004-07-22 Thread Innis Cunningham
Hi Vivian "Vivian Meazza" writes I've implemented a Coffman cartridge starter, and it would be nice to have a cloud of black smoke come out of the exhaust and drift downwind at wind speed before dispersing. I can do the first bit, but not the rest. I have my eye on Fred's bump-mapped 3D clouds.

RE: [Flightgear-devel] Spitfire

2004-07-22 Thread Vivian Meazza
I wrote > Sent: 16 July 2004 09:41 > To: 'FlightGear developers discussions' > Subject: RE: [Flightgear-devel] Spitfire > > > > Erik Hofman wrote > > > Sent: 16 July 2004 08:44 > > To: FlightGear developers discussions > > Subject: Re: [Fl

RE: [Flightgear-devel] Spitfire

2004-07-16 Thread Vivian Meazza
Erik Hofman wrote > Sent: 16 July 2004 08:44 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Spitfire > > Vivian Meazza wrote: > > > Back up with an upgraded machine - 2.8 Mhz P4, 512 Ram, Gforce 5200. > I've > > rebuilt Cyw

Re: [Flightgear-devel] Spitfire

2004-07-16 Thread Erik Hofman
Vivian Meazza wrote: Back up with an upgraded machine - 2.8 Mhz P4, 512 Ram, Gforce 5200. I've rebuilt Cywin, and FGFS-CVS. I've just copied the latest version of the Spitfire from FGFS-0.9.4, where it was working, after a fashion, to FGFS-CVS. All the files. Now it won't fly, as David pointed out.

RE: [Flightgear-devel] Spitfire

2004-07-16 Thread Vivian Meazza
I wrote > Sent: 15 July 2004 22:16 > To: 'FlightGear developers discussions' > Subject: RE: [Flightgear-devel] Spitfire > > > I wrote > > > Sent: 09 July 2004 09:53 > > To: 'FlightGear developers discussions' > > Subject: RE

RE: [Flightgear-devel] Spitfire

2004-07-15 Thread Vivian Meazza
I wrote > Sent: 09 July 2004 09:53 > To: 'FlightGear developers discussions' > Subject: RE: [Flightgear-devel] Spitfire > > David Megginson wrote > > > Sent: 09 July 2004 00:24 > > To: FlightGear developers discussions > > Subject: Re: [Flight

RE: [Flightgear-devel] Spitfire

2004-07-09 Thread Vivian Meazza
David Megginson wrote > Sent: 09 July 2004 00:24 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Spitfire > > > Vivian Meazza wrote: > > > There should also be a version with the legacy code, and > that does fly > > (or rather, do

Re: [Flightgear-devel] Spitfire

2004-07-09 Thread Innis Cunningham
Hi Guys Of course you could do what I did with the P51 I could not fly just make a quick FDM in JSBSIM with aeromatic. I know thats not the fix but hey it flys Cheers Innis From: David Megginson writes Andy Ross wrote: I know Vivian has had trouble getting it working with the gear ratio stuff on

Re: [Flightgear-devel] Spitfire

2004-07-09 Thread Martin Spott
"Ampere K. Hardraade" wrote: > Mwhaha... http://www.alexisparkinn.com/photogallery/Videos/ohmygodSpitfire > pass.wmv Does anyone have a copy of it ? Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are !

Re: [Flightgear-devel] Spitfire

2004-07-08 Thread David Megginson
Ampere K. Hardraade wrote: Mwhaha... http://www.alexisparkinn.com/photogallery/Videos/ohmygodSpitfirepass.wmv Yes, I've seen that clip -- it's pretty funny (scary, actually). Fortunately, the one based at CYOW tends to stick to the runway. All the best, David _

Re: [Flightgear-devel] Spitfire

2004-07-08 Thread Ampere K. Hardraade
I think this problem occurs with the F16 in 0.9.4 as well when the fuel tanks are full. Regards, Ampere On July 8, 2004 04:36 pm, David Megginson wrote: > Can anyone actually fly the Spitfire model in CVS? > >fgfs --aircraft=spitfireIIa > > The elevators seem to have no effect at all. On th

Re: [Flightgear-devel] Spitfire

2004-07-08 Thread Ampere K. Hardraade
Mwhaha... http://www.alexisparkinn.com/photogallery/Videos/ohmygodSpitfire pass.wmv Regards, Ampere On July 8, 2004 07:23 pm, David Megginson wrote: > I love watching it take off when it's at our end of the airport. > If only the plane had an extra seat ... > > > All the best, > > > David > > _

Re: [Flightgear-devel] Spitfire

2004-07-08 Thread David Megginson
Vivian Meazza wrote: There should also be a version with the legacy code, and that does fly (or rather, does for me), although the performance is a bit down. I don't think that there is an error in the code, but I'll double check with the legacy version Thanks. It's a beautiful model, by the way.

RE: [Flightgear-devel] Spitfire

2004-07-08 Thread Vivian Meazza
Andy Ross wrote: > > > I know Vivian has had trouble getting it working with the > gear ratio > > stuff on the engine. This (along with tuning the p51d) has > been on my > > list for ages, but I've been swamped with work and > homeowner concerns > > recently. I'm still alive, I promise.

Re: [Flightgear-devel] Spitfire

2004-07-08 Thread David Megginson
Andy Ross wrote: I know Vivian has had trouble getting it working with the gear ratio stuff on the engine. This (along with tuning the p51d) has been on my list for ages, but I've been swamped with work and homeowner concerns recently. I'm still alive, I promise. :) I don't think it's an engine p

Re: [Flightgear-devel] Spitfire

2004-07-08 Thread Andy Ross
David Megginson wrote: >Can anyone actually fly the Spitfire model in CVS? I wonder if there's something >wrong in the YASim >config file. > > > I know Vivian has had trouble getting it working with the gear ratio stuff on the engine. This (along with tuning the p51d) has been on my list fo

Re: [Flightgear-devel] Spitfire

2004-07-08 Thread Chris Metzler
On Thu, 08 Jul 2004 16:36:56 -0400 David Megginson <[EMAIL PROTECTED]> wrote: > > Can anyone actually fly the Spitfire model in CVS? > >fgfs --aircraft=spitfireIIa > > The elevators seem to have no effect at all. On the ground, the plane > starts nosing down as soon as it gets to around 30

Re: [Flightgear-devel] Spitfire

2004-07-08 Thread Chris Metzler
On Thu, 08 Jul 2004 16:36:56 -0400 David Megginson <[EMAIL PROTECTED]> wrote: > > Can anyone actually fly the Spitfire model in CVS? > >fgfs --aircraft=spitfireIIa > > The elevators seem to have no effect at all. On the ground, the plane > starts nosing down as soon as it gets to around 30

[Flightgear-devel] Spitfire

2004-07-08 Thread David Megginson
Can anyone actually fly the Spitfire model in CVS? fgfs --aircraft=spitfireIIa The elevators seem to have no effect at all. On the ground, the plane starts nosing down as soon as it gets to around 30 kt, and after an in-air start, it just dives. I wonder if there's something wrong in the YASi

RE: [Flightgear-devel] Spitfire model

2004-07-03 Thread Vivian Meazza
Hi, I've forwarded the current state-of-play Spitfire model to Curt for release in CVS. The model is also available here: http://myweb.tiscali.co.uk/vmeazza/FlightGear/spitfire.tar.gz There are 2 versions: spitfireIIa with legacy YASim propeller/engine code, and spitfireIIa-mod1 with the curr

[Flightgear-devel] Spitfire model

2004-06-20 Thread Vivian Meazza
I'm off to Italy tomorrow for a couple of weeks. I've put the spitfire files here: http://myweb.tiscali.co.uk/vmeazza/FlightGear/spitfire.tar.gz - they might work! There are 2 versions: spitfireIIa with legacy propeller/engine code, and spitfireIIa-mod1 propeller/engine code. Only spitfireIIa fl

Re: [Flightgear-devel] Spitfire Performance Testing

2004-05-16 Thread Wolfram Kuss
Rick aked himself: >(Or do I remember seeing film with the canopy open during the approach?) Yes. It makes landing easier to open the canopy and look around the big engine in front :). >:) Nice job Vivian :) Yes, indeed! >Rick Bye bye, Wolfram. __

RE: [Flightgear-devel] Spitfire Performance Testing

2004-05-16 Thread Vivian Meazza
Andy Ross wrote > > Vivian Meazza wrote: > > Now the bad news - the new propeller/engine code does not > seem to > work for me. These are the input data: > > Nothing looks wrong from reading it. Can you post the whole > file so I can test? Thanks. > This is the whole file. It worked(ish

Re: [Flightgear-devel] Spitfire Performance Testing

2004-05-15 Thread Andy Ross
Vivian Meazza wrote: > Now the bad news - the new propeller/engine code does not seem to > work for me. These are the input data: Nothing looks wrong from reading it. Can you post the whole file so I can test? Thanks. Andy ___ Flightgear-devel mailing l

RE: [Flightgear-devel] Spitfire Performance Testing

2004-05-15 Thread Vivian Meazza
Andy Ross wrote: > Sent: 13 May 2004 23:38 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Spitfire Performance Testing > > > Vivian Meazza wrote: > > As you can see, it "flies". The engine/propeller combination is a > >

Re: [Flightgear-devel] Spitfire Performance Testing

2004-05-15 Thread Lee Elliott
On Friday 14 May 2004 23:44, Rick Ansell wrote: > On Fri, 14 May 2004 22:48:19 +0100 > > "Vivian Meazza" <[EMAIL PROTECTED]> wrote: > > > -Original Message- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] On Behalf Of > > > Rick Ansell > > > Sent: 14 May 2004 21:30 > > > To: F

Re: [Flightgear-devel] Spitfire Performance Testing

2004-05-15 Thread Lee Elliott
On Friday 14 May 2004 08:30, Erik Hofman wrote: > Jim Wilson wrote: > > Vivian Meazza said: > >>Nearly there: > >> > >>http://myweb.tiscali.co.uk/vmeazza/FlightGear/spitfireIIa-1.jpg > >> > >>http://myweb.tiscali.co.uk/vmeazza/FlightGear/spitfireIIa-2.jpg > > > > Great progress...very nice! > > Ver

Re: [Flightgear-devel] Spitfire Performance Testing

2004-05-14 Thread Rick Ansell
On Fri, 14 May 2004 22:48:19 +0100 "Vivian Meazza" <[EMAIL PROTECTED]> wrote: > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > > Rick Ansell > > Sent: 14 May 2004 21:30 > > To: FlightGear developers discussions > I don't recall a jettison

RE: [Flightgear-devel] Spitfire Performance Testing

2004-05-14 Thread Vivian Meazza
> -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Rick Ansell > Sent: 14 May 2004 21:30 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Spitfire Performance Testing > > > On Fri, 14

Re: [Flightgear-devel] Spitfire Performance Testing

2004-05-14 Thread Rick Ansell
On Fri, 14 May 2004 09:30:37 +0200 Erik Hofman <[EMAIL PROTECTED]> wrote: > Jim Wilson wrote: > > Vivian Meazza said: > > >>Nearly there: > >> > >>http://myweb.tiscali.co.uk/vmeazza/FlightGear/spitfireIIa-1.jpg > >> > >>http://myweb.tiscali.co.uk/vmeazza/FlightGear/spitfireIIa-2.jpg > > > > Grea

Re: [Flightgear-devel] Spitfire Performance Testing

2004-05-14 Thread Erik Hofman
Jim Wilson wrote: Vivian Meazza said: Nearly there: http://myweb.tiscali.co.uk/vmeazza/FlightGear/spitfireIIa-1.jpg http://myweb.tiscali.co.uk/vmeazza/FlightGear/spitfireIIa-2.jpg Great progress...very nice! Very nice indeed! Erik ___ Flightgear-deve

RE: [Flightgear-devel] Spitfire Performance Testing

2004-05-14 Thread Vivian Meazza
Andy wrote > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Andy Ross > Sent: 13 May 2004 23:38 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Spitfire Performance Testing > > > Vivian Me

RE: [Flightgear-devel] Spitfire Performance Testing

2004-05-13 Thread Jim Wilson
Vivian Meazza said: > > > Erik Hofman wrote (some time ago) > > Sent: 01 May 2004 08:42 > > To: FlightGear developers discussions > > Subject: Re: [Flightgear-devel] Spitfire Performance Testing > > > > > > Vivian Meazza wrote: > > > &g

Re: [Flightgear-devel] Spitfire Performance Testing

2004-05-13 Thread Andy Ross
Vivian Meazza wrote: > As you can see, it "flies". The engine/propeller combination is > a horrid bodge in YASim. Very unrealistic performance. Looking > forward to resolving that issue. I actually thought it was resolved. Did the recent changes not work for you? I can only fix bugs that are rep

RE: [Flightgear-devel] Spitfire Performance Testing

2004-05-13 Thread Vivian Meazza
Erik Hofman wrote (some time ago) > Sent: 01 May 2004 08:42 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Spitfire Performance Testing > > > Vivian Meazza wrote: > > > Thanks, Eric, that link was already a primary source. It's &

RE: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-05-05 Thread Richard Bytheway
> -Original Message- > From: Vivian Meazza > Sent: 04 May 2004 7:38 pm > To: 'FlightGear developers discussions' > Subject: RE: [Flightgear-devel] Spitfire Propeller vs. YASim > > Richard Bytheway wrote > > > Sent: 04 May 2004 10:42 > > To:

RE: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-05-04 Thread Vivian Meazza
Richard Bytheway wrote > Sent: 04 May 2004 10:42 > To: FlightGear developers discussions > Subject: RE: [Flightgear-devel] Spitfire Propeller vs. YASim > > > > I had already shown by some pretty simple math that at 2850 > > rmp the tips of > > a 1.65m radius

RE: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-05-04 Thread Jim Wilson
Richard Bytheway said: > > I had already shown by some pretty simple math that at 2850 > > rmp the tips of > > a 1.65m radius propeller would be supersonic and therefore highly > > improbable, but we now know that the data of hp, gear ratio, > > rpm etc all tie > > together. At higher altitudes

Re: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-05-04 Thread David Megginson
Richard Bytheway wrote: I have a memory from years back of being told that the reason the Spitfire had such a distinctive sound was that the propellor tips _were_ supersonic. Maybe it was just heresay. I don't know about the Spitfire, but I understand that's the case with many floatplanes -- you c

Re: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-05-04 Thread Erik Hofman
Richard Bytheway wrote: I have a memory from years back of being told that the reason the Spitfire had such a distinctive sound was that the propellor tips _were_ supersonic. Maybe it was just heresay. That probably was for the Harvard. Erik ___ Flight

RE: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-05-04 Thread Richard Bytheway
> I had already shown by some pretty simple math that at 2850 > rmp the tips of > a 1.65m radius propeller would be supersonic and therefore highly > improbable, but we now know that the data of hp, gear ratio, > rpm etc all tie > together. > > Thanks > > Vivian Meazza > I have a memory from

RE: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-05-03 Thread Vivian Meazza
Wolfram Kuss > > >Spitfire Mk IIA > > Ah - surprising! > > Here is an email Rick "Fuelcock" sent me a short while ago. I > hope it helps. Sorry for the poor formating. > --- snip - > Rather than send you the GBE code , I will direct you to the > site whe

Re: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-05-02 Thread Wolfram Kuss
>Spitfire Mk IIA Ah - surprising! Here is an email Rick "Fuelcock" sent me a short while ago. I hope it helps. Sorry for the poor formating. --- snip - Rather than send you the GBE code , I will direct you to the site where I got it: http://www.aeromech.usyd

Re: [Flightgear-devel] Spitfire Performance Testing

2004-05-01 Thread Erik Hofman
Vivian Meazza wrote: Thanks, Eric, that link was already a primary source. It's all coming together nicely. Just finishing texturing, a little more animation to do, and about half the 3d instruments. You'll be glad to know that the model is under 5000 vertices so far. I have bodged the engine,

RE: [Flightgear-devel] Spitfire Performance Testing

2004-04-30 Thread Vivian Meazza
Erik Hofman wrote > Sent: 30 April 2004 22:37 > To: FlightGear developers discussions > Subject: [Flightgear-devel] Spitfire Performance Testing > > > > Hi, > > It just occurred to me I had this link in my bookmarks, just when you > think you've seen

[Flightgear-devel] Spitfire Performance Testing

2004-04-30 Thread Erik Hofman
Hi, It just occurred to me I had this link in my bookmarks, just when you think you've seen all information about the spitfire: http://www.fourthfightergroup.com/eagles/spittest.html Erik ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mai

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-28 Thread Arnt Karlsen
On Wed, 28 Apr 2004 12:26:42 +0100, David wrote in message <[EMAIL PROTECTED]>: > > > On 4/19/04 at 11:12 PM Vivian Meazza wrote: > >All you ever wanted to know about a Merlin with 2 speed, 2 stage > >supercharging is here: > > > >http://www.unlimitedexcitement.com/Pride%20of%20Pay%20n%20Pak/Ro

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-28 Thread David Luff
On 4/19/04 at 11:12 PM Vivian Meazza wrote: >All you ever wanted to know about a Merlin with 2 speed, 2 stage >supercharging is here: > >http://www.unlimitedexcitement.com/Pride%20of%20Pay%20n%20Pak/Rolls-Royce%2 0 >Merlin%20V-1650%20Engine.htm > >Except exactly how the boost contol valve worked

Re: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-04-27 Thread Jim Wilson
Andy Ross said: > Vivian Meazza wrote: > > Here are some calculations on propeller rpm. > > [...] > > We can see that 2850 is unlikely to be the rpm of a 10.75 diameter > > propeller > > Yeah, you're right. This is a real bug. I was playing with it this > morning, and we're hitting an edge case

RE: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-04-23 Thread Vivian Meazza
Wolfram Kuss asked > I did not see the original thread. What Spitfire version are > you speaking about? > Spitfire Mk IIA Regards Vivian ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgea

Re: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-04-22 Thread Wolfram Kuss
I did not see the original thread. What Spitfire version are you speaking about? Bye bye, Wolfram. ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel

Re: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-04-21 Thread Andy Ross
Vivian Meazza wrote: > Here are some calculations on propeller rpm. > [...] > We can see that 2850 is unlikely to be the rpm of a 10.75 diameter > propeller Yeah, you're right. This is a real bug. I was playing with it this morning, and we're hitting an edge case in the propeller solver. The pr

RE: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-04-21 Thread Vivian Meazza
Vivian Meazza wrote > > Andy Ross > > > [Starting a new thread. The reply nesting level in my > > mozilla window was getting freaky.] > > > > Vivian Meazza wrote: > > > The engine I'm trying to specify developed 1140 HP at engine > > > revolutions of 2850 rpm at a boost pressure of 9 psi. It

RE: [Flightgear-devel] Spitfire Propeller vs. YASim

2004-04-21 Thread Vivian Meazza
Andy Ross > [Starting a new thread. The reply nesting level in my > mozilla window was getting freaky.] > > Vivian Meazza wrote: > > The engine I'm trying to specify developed 1140 HP at engine > > revolutions of 2850 rpm at a boost pressure of 9 psi. It was fitted > > with 1:0.477 reducti

[Flightgear-devel] Spitfire Propeller vs. YASim

2004-04-20 Thread Andy Ross
[Starting a new thread. The reply nesting level in my mozilla window was getting freaky.] Vivian Meazza wrote: > The engine I'm trying to specify developed 1140 HP at engine > revolutions of 2850 rpm at a boost pressure of 9 psi. It was fitted > with 1:0.477 reduction gearing, which I think mean

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-20 Thread Vivian Meazza
Andy Ross tried again! > Vivian Meazza wrote: > > As does this (2): > > cruise-speed="308" cruise-rpm="2850" > > > > This does not (3): > > cruise-speed="308" cruise-rpm="1360" > > Again, these are *wildly* different propoellers you are > specifying. The second one is g

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-20 Thread Erik Hofman
Vivian, Are you aware of this data I once sent to the list: http://baron.flightgear.org/pipermail/flightgear-flightmodel/2003-March/002130.html Erik ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightge

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-20 Thread Andy Ross
Vivia Meazza wrote: > As does this (2): > cruise-speed="308" cruise-rpm="2850" > > This does not (3): > cruise-speed="308" cruise-rpm="1360" Again, these are *wildly* different propoellers you are specifying. The second one is going to end up with four (!) times the fo

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-20 Thread Vivian Meazza
Andy Ross > > Vivian Meazza wrote: > > However, eng-power should be the un-supercharged max power, so I > > reduced eng-power value, > > No no, I was wrong. Use the superchared value, the eng-power > gets corrected before solving to assume "max" sea level > manifold density (i.e. with boos

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-20 Thread Vivian Meazza
Andy wrote > > Vivian Meazza wrote: > > However, eng-power should be the un-supercharged max power, so I > > reduced eng-power value, > > No no, I was wrong. Use the superchared value, the eng-power > gets corrected before solving to assume "max" sea level > manifold density (i.e. with boost

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Lee Elliott
On Tuesday 20 April 2004 01:58, Andy Ross wrote: > Lee Elliott wrote: > > While I remember, if a YASim a/c only has one tank, the second tank - > > tank[1] - seems to be set with a 'nan' level. Doesn't stop the a/c > > engine from starting or running but it screws up the tot fuel figure. > > Setti

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Andy Ross
Lee Elliott wrote: > While I remember, if a YASim a/c only has one tank, the second tank - > tank[1] - seems to be set with a 'nan' level. Doesn't stop the a/c > engine from starting or running but it screws up the tot fuel figure. > Setting the level for tank[1] to zero via the property browser s

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Lee Elliott
On Monday 19 April 2004 23:15, Vivian Meazza wrote: > Andy Ross wrote > > > Vivian Meazza wrote: > > > The "takeoff" values. Are these the power absorbed by the > > > > propeller at > > > > > propeller rpm, or the engine output at engine rpm, super- or > > > un-supercharged? > > > > Un-supercharged

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Lee Elliott
While I remember, if a YASim a/c only has one tank, the second tank - tank[1] - seems to be set with a 'nan' level. Doesn't stop the a/c engine from starting or running but it screws up the tot fuel figure. Setting the level for tank[1] to zero via the property browser sorts it ok. LeeE

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Vivian Meazza
Andy Ross wrote > Vivian Meazza wrote: > > The "takeoff" values. Are these the power absorbed by the > propeller at > > propeller rpm, or the engine output at engine rpm, super- or > > un-supercharged? > > Un-supercharged. And the equations are solved such that both > power values are th

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Vivian Meazza
David Luff said > "Jim Wilson" writes: > > > David Luff said: > > > > > Can anyone clarify the function of the "Boost cut-out EMERGENCY > > > control" mentioned in the manual. The name implies that > it cuts the > > > boost completely in an engine emergency. However, the > text implies

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Andy Ross
Vivian Meazza wrote: > However, eng-power should be the un-supercharged max power, so I reduced > eng-power value, No no, I was wrong. Use the superchared value, the eng-power gets corrected before solving to assume "max" sea level manifold density (i.e. with boost and wastegate applied). > Is i

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread David Luff
"Jim Wilson" writes: > David Luff said: > > > Can anyone clarify the function of the "Boost cut-out EMERGENCY control" > > mentioned in the manual. The name implies that it cuts the boost > > completely in an engine emergency. However, the text implies that it > > overrides the BCV for extra em

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Jim Wilson
David Luff said: > Can anyone clarify the function of the "Boost cut-out EMERGENCY control" > mentioned in the manual. The name implies that it cuts the boost > completely in an engine emergency. However, the text implies that it > overrides the BCV for extra emergency boost: > > "If it is desi

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Jim Wilson
Andy Ross said: > > These settings don't make much sense in combination. > > The "eng" setting is a maximum power (at standard sea level) for the > engine without supercharging. In this case, the normally aspirated > engine develops 1140 HP at max RPM. > That needs to be clarified in the docs

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Andy Ross
I wrote (incorrectly): > The "eng" setting is a maximum power (at standard sea level) for the > engine without supercharging. Never mind the last part. The code *does* correctly handle the boost setting, and assumes that it is at maximum (in most cases, the wastegate setting) at the specified pow

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Vivian Meazza
> -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > David Luff > Sent: 19 April 2004 09:52 > To: FlightGear developers discussions > Subject: RE: [Flightgear-devel] Spitfire & Hurricane manuals > > > >

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Andy Ross
Vivian Meazza wrote: > The "takeoff" values. Are these the power absorbed by the propeller > at propeller rpm, or the engine output at engine rpm, super- or > un-supercharged? Un-supercharged. And the equations are solved such that both power values are the same. Basically, don't sweat this one;

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread David Luff
On 4/19/04 at 9:24 AM Vivian Meazza wrote: > >Finally, I've had some difficulty understanding the concept of using >absolute pressure for the Boost Control Valve (BCV). In the real world a >BCV >comprises, in principle, a plate exposed to manifold pressure on one side >and to the local atmospheri

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-19 Thread Vivian Meazza
Andy Ross wrote > > Vivian Meazza wrote: > > With these values > > > > eng-power="1140" eng-rpm="2850" > > cruise-power="2850" cruise-rpm="1359" > > takeoff-power="1100" takeoff-rpm="1359" > > > > YASim appears go into a loop and provides no output. > > These settings don't make much

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-18 Thread Andy Ross
Vivian Meazza wrote: > With these values > > eng-power="1140" eng-rpm="2850" > cruise-power="2850" cruise-rpm="1359" > takeoff-power="1100" takeoff-rpm="1359" > > YASim appears go into a loop and provides no output. These settings don't make much sense in combination. The "eng" setting

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-18 Thread Lee Elliott
On Sunday 18 April 2004 22:46, Vivian Meazza wrote: > Andy Ross wrote: > > Sent: 18 April 2004 19:04 > > To: FlightGear developers discussions > > Subject: Re: [Flightgear-devel] Spitfire & Hurricane manuals > > > > Vivian Meazza wrote: > > > YASim c

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-18 Thread Vivian Meazza
Andy Ross wrote: > Sent: 18 April 2004 19:04 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Spitfire & Hurricane manuals > > > Vivian Meazza wrote: > > YASim crashes, or perhaps, fails to converge, just by attempting to > > ru

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-18 Thread Andy Ross
Vivian Meazza wrote: > YASim crashes, or perhaps, fails to converge, just by > attempting to run with takeoff-rpm="1360"> Crashing and solution failure ought to be easily distinguished. :) Maybe the recent logging changes have hidden the failure message, I'll take a look. Try running the command

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-17 Thread Vivian Meazza
Andy Ross wrote > Vivian Meazza wrote: > > wastegate-mp="18.32" > > [...] > > mp-osi = 26.050 - does the "wastegate" work? - is this psi? > > The units are absolute pressure in inches of mercury (I > honestly don't know what the "-osi" suffix means). The > wastegate should indeed work. How

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-17 Thread Vivian Meazza
> Andy Ross replied > Vivian Meazza wrote: > > wastegate-mp="18.32" > > [...] > > mp-osi = 26.050 - does the "wastegate" work? - is this psi? > > The units are absolute pressure in inches of mercury (I > honestly don't know what the "-osi" suffix means). The > wastegate should indeed work.

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-17 Thread Andy Ross
Vivian Meazza wrote: > wastegate-mp="18.32" > [...] > mp-osi = 26.050 - does the "wastegate" work? - is this psi? The units are absolute pressure in inches of mercury (I honestly don't know what the "-osi" suffix means). The wastegate should indeed work. However, it is an overpressure release val

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-17 Thread Vivian Meazza
Andy Ross wrote > Vivian Meazza wrote: > > How do we set the reduction gearing ratio? > > Set the "gear-ratio" attribute of the propeller tag. This is the > reduction ratio, so typical values will be less than 1.0. > > > Can we do a constant speed propeller? > > The min-rpm and max-rpm attr

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-03 Thread Vivian Meazza
Jonathan Richards > > On Wednesday 31 Mar 2004 11:09 am, Vivian Meazza wrote: > > > I now have the Spitfire IIa model well underway. I have all the > > drawings and data I need (far too much probably). I've > rather lost the > > bubble on the recent changes to the piston engine > simulation

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-02 Thread Jonathan Richards
On Wednesday 31 Mar 2004 11:09 am, Vivian Meazza wrote: > I now have the Spitfire IIa model well underway. I have all the drawings > and data I need (far too much probably). I've rather lost the bubble on the > recent changes to the piston engine simulation in YASim: Vivian The pictures here http

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-04-01 Thread Arnt Karlsen
On Thu, 1 Apr 2004 08:47:15 +0100, Vivian wrote in message <[EMAIL PROTECTED]>: > > > > Arnt Karlsen wrote > > > > > On Wed, 31 Mar 2004 13:32:39 -0800, Andy wrote in message > > <[EMAIL PROTECTED]>: > > > > > Vivian Meazza wrote: > > > > Thanks for all that: all looks good - the document

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-03-31 Thread Vivian Meazza
Arnt Karlsen wrote > > On Wed, 31 Mar 2004 13:32:39 -0800, Andy wrote in message > <[EMAIL PROTECTED]>: > > > Vivian Meazza wrote: > > > Thanks for all that: all looks good - the documentation has got a > > > bit astern of station. Could you explain a bit more about the > > > "turbo" attr

RE: [Flightgear-devel] Spitfire & Hurricane manuals

2004-03-31 Thread Vivian Meazza
Andy Ross wrote > > Vivian Meazza wrote: > > Thanks for all that: all looks good - the documentation has > got a bit > > astern of station. Could you explain a bit more about the "turbo" > > attribute when used for a supercharger? > > Actually, the existing turbo-mul implementation is *more*

Re: [Flightgear-devel] Spitfire & Hurricane manuals

2004-03-31 Thread Arnt Karlsen
On Wed, 31 Mar 2004 13:32:39 -0800, Andy wrote in message <[EMAIL PROTECTED]>: > Vivian Meazza wrote: > > Thanks for all that: all looks good - the documentation has got a > > bit astern of station. Could you explain a bit more about the > > "turbo" attribute when used for a supercharger? > > Ac

  1   2   >