in flight. You pays yer money and
takes yer choice. But you have to do one or the other to make it look right
- using the nose as the origin and not adjusting the standard views looks
wrong.
I'm now going to follow Innes and retire into my bunker.
Vivian Meazza
(despite the name - English
off list itll be a few days though.Regards,Vivian Meazza
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Jim Wilson wrote:
... I'm excited that there's more 3d cockpit work going
on these days.
What are the pros and cons of 3D and 2D instruments? I used them because
A. They seem to make the aircraft more pleasant and easier to fly. (Probably
my imagination.)
B. I liked the look!
Vivian
.
My model of the Hawker
Hunter has been forwarded to Curt off-list. Its not quite finished: in
fact theres quite a bit that could be done, but its quite usable.
I look forward to any comments or suggestions for improvements you might have.
Regards
Vivian Meazza
and they look
nice. Now I´m working on a space shuttle model and Tuploev 154B.
[Vivian Meazza]
Sorry to hear that you haven't been able to make 3D instruments work for the
DC3 model. Have you been trying to use AC3D Ver 4? It doesn't work without
some work around for the crease token. If you would
Martin Spott wrote
Erik Hofman [EMAIL PROTECTED] wrote:
Curtis L. Olson wrote:
The Hawker Hunter has been committed to CVS and seems to fly quite
nicely.
For decent hardware. [...]
I was surprized that the frame rate for the Hunter on an
Octane is not that bad. It is
Vivian Meazza wrote
Ilja Moderau wrote:
I was using the AC3d version 3.6.
Screenshot: http://mitglied.lycos.de/iljamod/throttle.jpg
There is the file: http://mitglied.lycos.de/iljamod/dc3-throttle.zip
Sorry to hear that you haven't been able to make 3D
instruments work
Martin wrote:
David Megginson [EMAIL PROTECTED] wrote:
Update of /var/cvs/FlightGear-0.9/data/Aircraft/pa28-161
In directory baron:/tmp/cvs-serv12589
Modified Files:
pa28-161-yasim-set.xml
Log Message:
Change camera position so that model doesn't rotate around the nose.
, or the models wouldn't fly very well,
if at all. I take it the CofG moves as fuel is consumed. Or is there
something else?
With intellectual curiosity.
Vivian Meazza
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Jim Wilson wrote
Vivian Meazza [EMAIL PROTECTED] said:
Martin wrote:
David Megginson [EMAIL PROTECTED] wrote:
Update of /var/cvs/FlightGear-0.9/data/Aircraft/pa28-161
In directory baron:/tmp/cvs-serv12589
Modified Files:
pa28-161-yasim-set.xml
to me that the P-51 suffers from the same
visual mishap as the PA-28 does (does this have to do with
the P ? ;-))
Is that a silent P as in swimming pool? (Native English speakers only :-))
Vivian Meazza
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Jim Wilson added
Vivian Meazza [EMAIL PROTECTED] said:
Tried that. Looks just the same to me. As I said some time ago: yer
pays yer money and yer takes yer choice. Neither is right on the
ground for differential braking: with one brake full on the
aircraft
more or less rotates
Jim Wilson asked
Vivian Meazza [EMAIL PROTECTED] said:
I moved the origin, then applied an equal and opposite offset. When
one differential brake is applied and the model is viewed in or
helicopter view tower view it appears to be turning around its axis
rather than around
Josh Babcock
Vivian Meazza wrote:
I enter the loop in a shallow dive, 2nd stage boost on, 350
kts, pull
baaack the stick and the model rolls violently and does not
enter the
loop ... Works fine in other models so it's not the obvious - the
joystick. But I expect I'm doing
of a loop when in chase or helicopter
view. Not the end of the world, but lacking realism.
If you are not confused by now, you don't understand the problem.
Vivian Meazza
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Jim Wilson wrote
Vivian Meazza [EMAIL PROTECTED] said:
Josh Babcock
Vivian Meazza wrote:
I enter the loop in a shallow dive, 2nd stage boost on, 350
kts, pull
baaack the stick and the model rolls violently and does not
enter the
loop ... Works fine
Jim Wilson advised:
Norman Vine [EMAIL PROTECTED] said:
Vivian Meazza writes:
I remain disconcerted that the visual model appears to
roll through
180 degs vertically on the up and down legs of a loop
when in chase
or helicopter view. Not the end of the world, but lacking
be difficult to calculate. Something I wanted to do in the future
Vivian Meazza
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Lee Elliott wrote
On Friday 13 February 2004 06:16, Jon Berndt wrote:
True, but... This is a chunk of calculations running
every frame.
In the olden days, the cost would be too high.
These days, it's not even a spec on a flea on the butt of
an elephant
in terms of the
Lee Elliott wrote
On Friday 13 February 2004 22:27, Jon S Berndt wrote:
Any chance of modeling wingtip vortices (when CL is high
enough above
some threshhold) and rocket engine exhaust?
:-)
Jon
I've thought about trying this but I think it could only be
really effective
Lee Elliott
Sent: 14 February 2004 13:35
To: FlightGear developers discussions
Subject: Re: [Flightgear-devel] Aerodynamic centre and 3D models
On Saturday 14 February 2004 13:07, Vivian Meazza wrote:
Lee Elliott wrote
On Friday 13 February 2004 06:16, Jon Berndt wrote:
True
Norman Vine says
Lee Elliott writes:
On Friday 13 February 2004 22:27, Jon S Berndt wrote:
Any chance of modeling wingtip vortices (when CL is high enough
above some threshhold) and rocket engine exhaust?
Another possiblity would be some sort of particle object handling
Andy Ross
Lee Elliott wrote:
I think drop tanks would be feasible but it would need some thinking
about:)
The fun bit will be counteracting the a/c manuevours after the tank
has dropped so it falls straight even though the a/c may be
climbing
and banking.
This is more of a
Jon Berndt wrote
One feature in JSBSim that I began and have not yet finished
(pending other
things) is a parent/child capability. You can (for instance)
load a Mk82 on an F-16 and the physical effects of the Mk82
will affect the F-16. The position is based on the position
of the
Lee Elliott wrote
On Saturday 14 February 2004 18:35, Vivian Meazza wrote:
Andy Ross
Lee Elliott wrote:
I think drop tanks would be feasible but it would need some
thinking
about:)
The fun bit will be counteracting the a/c manuevours after the
tank has
Jon Berndt
Sounds VERY good. I'm sure you'll get round to it in due course.
Vivian
Did I say that? ;-)
I think I may have a few weeks this summer *alone*. That's
got opportunity written all over it.
Excellent. But summer is for real flying.
Vivian
Jim Wilson
Sent: 13 February 2004 15:31
David Megginson [EMAIL PROTECTED] said:
Jim Wilson wrote:
Yes it is. I'm probably being really dense, but I can't
think of a
reason why it would be important to know what the origin
is in fdm
coordinates. So long as position is
Andy Ross
Vivian Meazza wrote:
I've just done some proof-of-principle work on drop tanks
with YASim.
I set up some weight elements for the pylons and for the
dry weight of
the tanks, and some fuel tanks to match. [...]
However, the bad news is that I can't set _one_ of the drop
Lee Elliott wrote
Just to help confuse things a little, j/k are for spoilers,
iirc, but as
speed-brakes aren't supported in YASim (yet;) I've used the
spoiler control.
Kludged that one by using an extra, low lift, high drag flap on the
horizontal stabiliser in the Hunter. CTRL B
Martin Spott wrote
Melchior FRANZ [EMAIL PROTECTED] wrote:
* [EMAIL PROTECTED] -- Tuesday 17 February 2004 03:55:
One question, why don't we use lower case g key for gear
up and for
gear
down?
Why do we also need the upper G key?
Now I can simply press G and there's no
Andy Ross
Vivian Meazza wrote:
Yes, this problem was interesting. I set up 2 weights thus:
/yasim/weights/tank-100gal-lbs[0] /yasim/weights/tank-100gal-lbs[1]
Are you sure you got the weight definition right in the
YASim configuration file? The property definitions look
fine
Andy Ross
Vivian Meazza wrote:
I think it should work, and it _looks_ as if it does:
certainly when
you browse internal properties it looks right, but I can't set the
second [1] tank to zero.
I'm still fuzzy. Do you mean that you can't set the property
to zero at all
Andy Ross wrote
Vivian Meazza wrote:
I think it should work, and it _looks_ as if it does:
certainly when
you browse internal properties it looks right, but I can't set the
second [1] tank to zero.
I'm still fuzzy. Do you mean that you can't set the property
to zero at all
. If I have any pending
business,
patches, etc. (Fred, Jim, etc.) I will have to get back to it
this weekend.
Congratulations. That should keep you busy for a while - well the next
eighteen years at least.
Best Wishes
Vivian Meazza
Vivian Meazza wrote
Andy Ross wrote
Vivian Meazza wrote:
I think it should work, and it _looks_ as if it does:
certainly when
you browse internal properties it looks right, but I can't set the
second [1] tank to zero.
I'm still fuzzy. Do you mean that you can't set
to do at least this for the Hunter model, but
in lbs please NOT US gals. The other engine stuff would be nice to have as
well. If Andy could find the time I certainly would be most grateful.
Regards
Vivian Meazza
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Regards
Vivian Meazza
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Martin Spott asked
Do you experience the same ?
http://weather.noaa.gov/weather/current/EDLN.html
You don't have permission to access
/weather/current/EDLN.html on this server.
the same with KSFO and other airports,
Yes
Regards
Vivian Meazza
with importing exporting the AC3D scripts into AC3d? They
seem to import OK into AC3d here.
Regards
Vivian Meazza
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can't see anything obvious in AC3D that might be causing
what's in that
screen grab.
I can't remember what package Vivian used to create it -
Blender or AC3D -
Vivian?
AC3D ver 4.08, then saved in ver 3.6 to remove the 'crease' token.
Regards
Vivian Meazza
.
I can't remember what package Vivian used to create it - Blender or
AC3D -
Vivian?
She uses AC3D.
HE :-)
Vivian, Vyvyan = male
Vivien, Vivienne etc = female
A common error. Sorry if there's any misunderstanding
Vivian Meazza
Melchior wrote
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Melchior FRANZ
Sent: 04 March 2004 08:58
To: [EMAIL PROTECTED]
Subject: [Flightgear-devel] Re: [BUG] Hunter noise UV face
singularity
* Vivian Meazza -- Thursday 04 March
Erik Hofman wrote
http://home.clara.net/wolverine/BOB/misc/Spit_Hurri_Manuals.zip
Is this a hint ;-)?
Vivian Meazza
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Erik Hofman wrote
Vivian Meazza wrote:
Oddly enough, last weekend I found a book in my local
bookstore on the
Spitfire MkIIb, containing line drawings. I'll see if it's still
there. If it is, I could do a model especially with the info in the
pilot's notes. Is there a demand
Melchior FRANZ wrote
Sent: 07 March 2004 11:08
To: [EMAIL PROTECTED]
Subject: [Flightgear-devel] Re: Spitfire Hurricane manuals
* Vivian Meazza -- Sunday 07 March 2004 11:53:
Oddly enough, last weekend I found a book in my local
bookstore on the
Spitfire MkIIb, containing line
.
I have a copy of his unfinished model, if anyone wants it.
That could be useful. Could you let me have a copy?
Regards
Vivian Meazza
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Lee Elliott
On Monday 08 March 2004 13:21, David Megginson wrote:
Vivian Meazza wrote:
That could be useful. Could you let me have a copy?
I'll send it via private e-mail. Also, for anyone
interested in the
Hurricane (the Spitfire's weaker and lesser known sibling, but also
Jim Wilson
It occurred to me that our 3-D modelers might not all be
running plib cvs.
Andy came up with an excellent improvement to the ac3d
loader/optimizer (new optimizer actually) that incorporates
logic to automatically split vertices in two so that they go
into seperate
Jim wrote
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Jim Wilson
Sent: 09 March 2004 19:31
To: FlightGear developers discussions
Subject: RE: [Flightgear-devel] heads up for 3D modelers -
plib cvs issue
Vivian Meazza said:
We
for seat
raise/lower. Rather sounds like I'd better use L/l.
Regards
Vivian Meazza
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David Megginson wrote
Sent: 11 March 2004 16:05
To: FlightGear developers discussions
Subject: Re: [Flightgear-devel] New keybinding
Vivian Meazza wrote:
I've bound Ctrl-R to the radios dialog. I imagine that this
will be a very
frequently-used command, especially for aircraft
Lee Elliott wrote
On Wednesday 17 March 2004 16:37, Curtis L. Olson wrote:
Curtis L. Olson wrote:
1. I'm growing less enthused with our aircraft alias
naming system.
I don't mind that we have the capability, but it becomes
annoying to
have 8 names for the same aircraft, even
Lee Elliott wrote
On Wednesday 17 March 2004 21:50, Vivian Meazza wrote: [snip...] ...
I'd be inclined to hold off including the Sea Hawk, TSR-2
and B-52,
for the time being at least. The Sea Hawk is currently getting a
proper panel,
speed-brakes and some missing gear doors
Melchior FRANZ
I've added two shadows for the bo105 (after Jim beat me to it
:-), but I can't animate them correctly. The situation is so
strange that it must be a bug in fgfs.
I've got objects shadow_fuselage and shadow_rotor. Both
are very flat, textured boxes. The strategy is:
scripting end up is that the script
controls the
workflow, but most of this stuff is done using pain C++ code.
^^
That would
make it both flexible and fast.
Freudian slip?
Regards
Vivian Meazza
the --disable-clouds
to really disable clouds.
Cheers,
-Fred
The exhaust plume of the Hunter is a crude simulation - using a nearly
transparent material. Perhaps there's a better way of simulating the
exhaust?
Regards
Vivian Meazza
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Frederic BOUVIER wrote
Vivian Meazza wrote:
So to make it short, it seems to work ok. What this change does
not address yet is the fact that we can see the ground over
overcast layer through the exhaust beam of the hunter. I can try
to look at this tonight and cure
Frederic BOUVIER wrote
Vivian Meazza wrote:
Frederic BOUVIER wrote
Vivian Meazza wrote:
So to make it short, it seems to work ok. What this
change does
not address yet is the fact that we can see the ground over
overcast layer through the exhaust beam
Erik wrote
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Erik Hofman
Sent: 24 March 2004 12:42
To: FlightGear developers discussions
Subject: Re: [Flightgear-devel] seahawk broke
Curtis L. Olson wrote:
Erik,
I get two errors trying
Jim Wilson wrote
Erik Hofman said:
Vivian Meazza wrote:
Erik wrote
I was trying to get a 2d panel and 3d panel version mixed into one
subdirectory. Vivian reworked the seahawk to add a 3d cockpit
but didn't
include the 3d panel code (and moved some code to appropriate
Curtis L. Olson asked
Sent: 24 March 2004 15:36
To: FlightGear developers discussions
Subject: [Flightgear-devel] Official 0.9.4 release???
I'm seeing a last minute flurry of people trying to get final model
tweaks into the base package (which is good--great work
guys![1]), but
Jim Wilson
Vivian Meazza said:
Curtis L. Olson asked
Sent: 24 March 2004 15:36
To: FlightGear developers discussions
Subject: [Flightgear-devel] Official 0.9.4 release???
I'm seeing a last minute flurry of people trying to get
final model
tweaks
Jim Wilson
Curtis L. Olson said:
Jim Wilson wrote:
How about this one? ;-)
http://www.spiderbark.com/fgfs/barneymobile.png
Is that the don't-ask-don't-tellicopter.
Haha! Is this what they call aviation innuendo? What about
these folks:
Giles Robertson wrote
Let's check the patent filing dates etc. Could just be that
we have prior art. Can anybody get a date that nasal was
originally committed?
Giles Robertson
-Original Message-
From: Lee Elliott [mailto:[EMAIL PROTECTED]
Sent: 26 March 2004 02:20
Andy Ross wrote
Now that the new release is out (yeah, that's my exuse...),
I've finally checked in the new Nasal fuel code I've been
working on, along with YASim changes to enable it. This
hasn't been tested terribly well, so please let me know if I
broke something. You should be
Andy Ross replied
Vivian Meazza wrote:
How do we handle fuel in lbs and account for Avgas/JP4?
For read access, you will find a level-lbs property also.
But the only one you are allowed to change is the gallons
one. There is a density-ppg property there too, for doing
simulation in YASim:
How do we set the reduction gearing ratio?
Can we do a constant speed propeller?
And can we set the handedness of the propeller to RH?
Regards
Vivian Meazza
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The P51d YASim file appears to have the following typo:
wing ...
flap1 start=0.543 end=0.94.5 lift=1.3 drag=1.4/
^^
/wing
Makes the model interesting in roll!!
Regards
Vivian Meazza
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Andy Ross replied
Sent: 31 March 2004 20:43
To: FlightGear developers discussions
Subject: Re: [Flightgear-devel] Spitfire Hurricane manuals
Vivian Meazza wrote:
How do we set the reduction gearing ratio?
Set the gear-ratio attribute of the propeller tag. This is
the reduction
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*
like
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 attribute when used
Jim Wilson wrote
Vivian Meazza said:
The P51d YASim file appears to have the following typo: wing ...
flap1 start=0.543 end=0.94.5 lift=1.3 drag=1.4/
^^
/wing
Makes the model interesting in roll!!
Hi Vivian,
Someone more
something to do with the
propeller right now.
Regards
Vivian Meazza
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Spitfire F21 contract although production was cancelled with the end of the
war and the introduction into service of the new jet powered Meteor and
Vampire. The aircraft eventually evolved into the Seafang for Royal Navy
service which in its turn was also cancelled.
Regards
Vivian Meazza
be of interest http://www.aae.uiuc.edu/m-selig/ads/aircraft.html
That said that list shows a different NACA number for the Spitfire to a
contemporary paper so ...
Regards
Vivian Meazza
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Jonathan Richards
On Wednesday 31 Mar 2004 11:09 am, Vivian Meazza wrote:
snip
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
Vivian Meazza
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more work on it in due course. I'm not giving
it a high priority, since it is really only eye candy. Fred Bouvier has been
doing some work on the interaction with clouds. BTW, transparent cockpit
canopies also make clouds disappear.
Regards
Vivian Meazza
-ingestion for the Harrier and for helos.
Regards
Vivian Meazza
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Marco
Look in the Hunter or p51d model files to see how it can be done.
Regards
Vivian Meazza
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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 attributes
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. However
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. However
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
run with takeoff-power=1100 takeoff-rpm=1360
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 sense in combination
-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
On 4/19/04 at 9:24 AM Vivian Meazza wrote:
Finally
- Dave
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%20
Merlin%20V-1650%20Engine.htm
Except exactly how the boost contol valve worked :-)
Regards
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 the same
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
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
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 going to end up
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
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
was fitted
Wolfram Kuss asked
I did not see the original thread. What Spitfire version are
you speaking about?
Spitfire Mk IIA
Regards
Vivian
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Jon Stockill wrote
The Fleet Air Arm Museum are very interested in having their own
simulator but this would depend on them being able to find
a sponsor -
so it's still dubious as to if anything will happen in that respect.
They have a Vampire cockpit which they're using
in psi; in YASim is holded by epr but the units
are missing.
Epr is exhaust pressure ratio. AFAIK, oil pressure is not modelled.
Regards
Vivian Meazza
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Jonathan Richards
On Friday 23 Apr 2004 4:11 pm, Vivian Meazza wrote:
Jon Stockill wrote
snip
They were particularly impressed
with the Seahawk and hunter models, so if Vivian wants to do a
Seafire version of his spitfire model I'm sure they'd be happy to
supply some
Jonathan Richards wrote
On Friday 23 Apr 2004 5:24 pm, Vivian Meazza wrote:
Jonathan Richards
snip
I'm prepared to write to the Battle of Britain Memorial Flight
[1] and ask them for information.
snip
I think that would be a very good idea. I think I have evolved a
pretty
David Megginson wrote
Andy Ross wrote:
But the idea behind YASim is to produce plausible results for all
possible engines; oil pressure is one of those values that
is (AFAIK)
just too engine-specific.
Further to the point, here is some information from the
Lycoming O-320
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
all coming
together nicely. Just finishing
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