Re: [Flightgear-devel] Re: [Flightgear-users] Segmentation fault ?

2002-12-10 Thread Norman Vine
Adam wrote:

> Is there an easy way to fix this then? I didn't turn on the
> clouds3d stuff at all - so it in my download it must be on by
> default - I will try with it turned off. 

> Sorry for being a bit of a newb here, but can you offer more
> advice about how to implement Norman's new code? 

What I posted is a diff file 
% info diff
% info patch

but the easiest way for you to try this is to backup your original
SkySceneLoader.cpp file and try compiling with this one, which 
has the change incorporated

http://rockfish.net/~nhv/fgfs/SkySceneLoader.cpp

HTH

Norman

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Re: [Flightgear-devel] Auto Pilot probs in 0.9.1

2002-12-10 Thread Norman Vine
Jim Wilson wrrites:
> 
> It isn't a YASim problem, other than those are the aircraft that don't have DG
> installed. 

Here is a temporary *patch* 

This also reactivates the autopilot adjuster :-)

Norman



diffs
Description: Binary data


Re: [Flightgear-devel] Re: [Flightgear-users] Segmentation fault ?

2002-12-10 Thread Simon Fowler
On Tue, Dec 10, 2002 at 07:56:19AM -0500, Norman Vine wrote:
> Adam wrote:
> 
> > Is there an easy way to fix this then? I didn't turn on the
> > clouds3d stuff at all - so it in my download it must be on by
> > default - I will try with it turned off. 
> 
> > Sorry for being a bit of a newb here, but can you offer more
> > advice about how to implement Norman's new code? 
> 
> What I posted is a diff file 
> % info diff
> % info patch
> 
Just one thing to note: you're /much/ better off posting a unified
diff (what you get from diff -u) - it's a more robust format, and a
/lot/ more readable for a normal human being. patch will be more
likely to work if you feed it a unified diff.

Simon

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Re: [Flightgear-devel] Auto Pilot probs in 0.9.1

2002-12-10 Thread Jim Wilson
Norman Vine <[EMAIL PROTECTED]> said:

> Jim Wilson wrrites:
> > 
> > It isn't a YASim problem, other than those are the aircraft that don't have DG
> > installed. 
> 
> Here is a temporary *patch* 
> 
> This also reactivates the autopilot adjuster :-)
> 

Right...temporary. This just points up the need to get a fully configurable
autopilot running.  If there isn't a DG you can't really follow heading.  So
the j3-cub should not even have an autopilot without it.  As you know, the way
the auto pilot ties in to the instrument with Curt's patch is the correct
behavior.

Best,

Jim

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Re: [Flightgear-devel] Auto Pilot probs in 0.9.1

2002-12-10 Thread David Megginson
Jim Wilson writes:

 > Right...temporary. This just points up the need to get a fully
 > configurable autopilot running.  If there isn't a DG you can't
 > really follow heading.  So the j3-cub should not even have an
 > autopilot without it.

I wonder if anyone has ever STC'd some kind of autopilot for a PA-18.
I somehow doubt it, but it would be interesting to check.

A fully-configurable AP will be nice, because Norm will then be able
to tie it to the true heading for his GIS work, while people who want
flight simulation will have the option to make it behave realistically
(tied to a DG on a small plane, or a complex FMS on a larger one).


All the best,


David

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[Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Jon S Berndt
Bell/Agusta V-22 derivative commercial BA609:

http://www.bellagusta.com/html/aeroNet/downLoads/20393_609_AB_Brochure.pdf

Fascinating. Pretty pictures, too.

Jon

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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Jim Wilson
Hmmmthat should thin the ranks down on Wall St even more.  It's hard to 
imagine they are selling civilian versions while there's talk about nixing the 
Osprey because of safety concerns.  Well maybe not that hard.  IMHO that thing
even "looks" dangerous :-)

Best,

Jim


Jon S Berndt <[EMAIL PROTECTED]> said:

> Bell/Agusta V-22 derivative commercial BA609:
> 
> http://www.bellagusta.com/html/aeroNet/downLoads/20393_609_AB_Brochure.pdf
> 
> Fascinating. Pretty pictures, too.
> 


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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Erik Hofman
Jim Wilson wrote:

Hmmmthat should thin the ranks down on Wall St even more.  It's hard to 
imagine they are selling civilian versions while there's talk about nixing the 
Osprey because of safety concerns.  Well maybe not that hard.  IMHO that thing
even "looks" dangerous :-)

It looks like a power ranger ...

Erik


Jon S Berndt <[EMAIL PROTECTED]> said:


Bell/Agusta V-22 derivative commercial BA609:

http://www.bellagusta.com/html/aeroNet/downLoads/20393_609_AB_Brochure.pdf

Fascinating. Pretty pictures, too.



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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Tony Peden

--- Jim Wilson <[EMAIL PROTECTED]> wrote:
> Hmmmthat should thin the ranks down on Wall St even more.  It's
> hard to 
> imagine they are selling civilian versions while there's talk about
> nixing the 
> Osprey because of safety concerns.  Well maybe not that hard.  IMHO
> that thing
> even "looks" dangerous :-)

More dangerous than a helicopter?  That fixed wing makes me feel better
about it.  I wonder if gliding in that thing is any better than
autorotation in a helicopter ...

It sounds like avoiding the "vortex ring state" is doable but will
likely require a fair amount of training (and possibly some control law
mods)

> 
> Best,
> 
> Jim
> 
> 
> Jon S Berndt <[EMAIL PROTECTED]> said:
> 
> > Bell/Agusta V-22 derivative commercial BA609:
> > 
> >
>
http://www.bellagusta.com/html/aeroNet/downLoads/20393_609_AB_Brochure.pdf
> > 
> > Fascinating. Pretty pictures, too.
> > 
> 
> 
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> 


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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Curtis L. Olson
Tony Peden writes:
> 
> --- Jim Wilson <[EMAIL PROTECTED]> wrote:
> > Hmmmthat should thin the ranks down on Wall St even more.  It's
> > hard to 
> > imagine they are selling civilian versions while there's talk about
> > nixing the 
> > Osprey because of safety concerns.  Well maybe not that hard.  IMHO
> > that thing
> > even "looks" dangerous :-)
> 
> More dangerous than a helicopter?  That fixed wing makes me feel better
> about it.  I wonder if gliding in that thing is any better than
> autorotation in a helicopter ...
> 
> It sounds like avoiding the "vortex ring state" is doable but will
> likely require a fair amount of training (and possibly some control law
> mods)

I think the big danger is at landing or takeoff.  If you lose an
engine or have any sort of mechanical failure on a single side, you
are going to hit hard at some really odd angle.  At least with a
helicopter you are probably going to land butt first and might have a
chance to try an autorotation.

Curt.
-- 
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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Jon S Berndt
On Tue, 10 Dec 2002 13:09:03 -0600
 "Curtis L. Olson" <[EMAIL PROTECTED]> wrote:


I think the big danger is at landing or takeoff.  If you lose an
engine or have any sort of mechanical failure on a single side, you
are going to hit hard at some really odd angle.  At least with a
helicopter you are probably going to land butt first and might have a
chance to try an autorotation.


I would be very surprised if the engines are not 
cross-coupled such that each engine drives both props, as 
in the V-22. A single engine failure would not cause one 
rotor to be unpowered. The gearbox for the V-22 was one of 
the main design challenges for the Osprey, IIRC. The other 
components of the drive train/propulsion system are made 
for extremely high reliability for that very reason. They 
are mostly "Criticality 1" items. I agree that the big 
danger is at takeoff and landing, for sure, but it's 
because of the aero phenomena. I wonder if clever 
placement of sensors about the aircraft and some Expert 
Systems logic could potentially sense dangerous conditions 
and adapt appropriately?

Jon


Jon

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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Gene Buckle
> It sounds like avoiding the "vortex ring state" is doable but will
> likely require a fair amount of training (and possibly some control law
> mods)
>

Speaking of which - a recent issue of Aviation Leak that I have mentions
that they've been unable to properly account for/simulate the VRS in the
flight simulators for the V-22.

g.



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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Gene Buckle
> I think the big danger is at landing or takeoff.  If you lose an
> engine or have any sort of mechanical failure on a single side, you
> are going to hit hard at some really odd angle.  At least with a
> helicopter you are probably going to land butt first and might have a
> chance to try an autorotation.
>
Curt, there is a central transmission in the wing that will transfer the
drive to the operating engine automatically so that won't happen.  If they
both fail at once though

g.



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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Curtis L. Olson
Gene Buckle writes:
> > I think the big danger is at landing or takeoff.  If you lose an
> > engine or have any sort of mechanical failure on a single side, you
> > are going to hit hard at some really odd angle.  At least with a
> > helicopter you are probably going to land butt first and might have a
> > chance to try an autorotation.
> >
> Curt, there is a central transmission in the wing that will transfer the
> drive to the operating engine automatically so that won't happen.  If they
> both fail at once though

You could also imagine that something downstream of this central
transmission could fail, again leaving you in an unhealthy state.  I
agree with the people who are saying this can be made to fly safely
within reasonable tolerances, but I also think there are certain
phases where it's probably always going to be a little less safe than
a helicopter, or perhaps you could say that certain types of failures
at certain times would be less survivable in the BA-609 ...

Regards,

Curt.
-- 
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Twin Cities[EMAIL PROTECTED]  [EMAIL PROTECTED]
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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Jon S Berndt
On Tue, 10 Dec 2002 15:22:05 -0600
 "Curtis L. Olson" <[EMAIL PROTECTED]> wrote:


a helicopter, or perhaps you could say that certain types 
of failures at certain times would be less survivable in the BA-609 

This (above) might be more true than your first statement. 
One thing that comes to my mind though, for V-22, is that 
survivability might be increased in one way due to less 
time spent in the combat area. You dash in fast, you drop 
down and pick up the downed airman, then you dash out 
fast. It's got the advantage over helicopters in that 
respect, at least. If the BA_609 proves to be as safe as 
helicopters I can see it really "taking off".

Jon

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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Gene Buckle
> > Curt, there is a central transmission in the wing that will transfer the
> > drive to the operating engine automatically so that won't happen.  If they
> > both fail at once though
>
> You could also imagine that something downstream of this central
> transmission could fail, again leaving you in an unhealthy state.  I
> agree with the people who are saying this can be made to fly safely
> within reasonable tolerances, but I also think there are certain
> phases where it's probably always going to be a little less safe than
> a helicopter, or perhaps you could say that certain types of failures
> at certain times would be less survivable in the BA-609 ...
>

Well one of my favorite quotes goes something like this:

"If your wings are moving faster than you are, you're in a Helicopter and
are therefore unsafe." :)

g.



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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Curtis L. Olson
Gene Buckle writes:
> Well one of my favorite quotes goes something like this:
> 
> "If your wings are moving faster than you are, you're in a Helicopter and
> are therefore unsafe." :)

I suppose the related quote would be something along the lines of "If
your wings are moving slower than you, they are probably not still
attached (and are therefore unsafe.)"

Curt.
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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Tony Peden
On Tue, 2002-12-10 at 13:22, Curtis L. Olson wrote:
> Gene Buckle writes:
> > > I think the big danger is at landing or takeoff.  If you lose an
> > > engine or have any sort of mechanical failure on a single side, you
> > > are going to hit hard at some really odd angle.  At least with a
> > > helicopter you are probably going to land butt first and might have a
> > > chance to try an autorotation.
> > >
> > Curt, there is a central transmission in the wing that will transfer the
> > drive to the operating engine automatically so that won't happen.  If they
> > both fail at once though
> 
> You could also imagine that something downstream of this central
> transmission could fail, again leaving you in an unhealthy state.  I
> agree with the people who are saying this can be made to fly safely
> within reasonable tolerances, but I also think there are certain
> phases where it's probably always going to be a little less safe than
> a helicopter, or perhaps you could say that certain types of failures
> at certain times would be less survivable in the BA-609 ...

I don't know ... it sound like you are really starting to stack up the
failures.

> 
> Regards,
> 
> Curt.
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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Jon S Berndt
On 10 Dec 2002 15:18:48 -0800
 Tony Peden <[EMAIL PROTECTED]> wrote:


I don't know ... it sound like you are really starting to 
stack up the failures.

I don't know ... I was thinking the other day: what if the 
pilot was pouring a can of Coke into a cup on the flight 
deck and dropped the can and it rolled under the pedals 
and he set his cup down and reached down to pick up the 
can but knocked the yoke which rolled the plane and made 
him push his foot forward and the can got stuck under the 
pedals with the rudder all the way over and the partial 
cup of Coke was knocked over into some electrical stuff 
and shorted it out and killed all the engines on one side 
and the stewardess fell onto the pilot so he couldn't see 
and then ...

Geez, I'm not flying anymore.

;-)

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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Tony Peden
On Tue, 2002-12-10 at 15:27, Jon S Berndt wrote:
> On 10 Dec 2002 15:18:48 -0800
>   Tony Peden <[EMAIL PROTECTED]> wrote:
> >
> >I don't know ... it sound like you are really starting to 
> >stack up the failures.
> 
> I don't know ... I was thinking the other day: what if the 
> pilot was pouring a can of Coke into a cup on the flight 
> deck and dropped the can and it rolled under the pedals 
> and he set his cup down and reached down to pick up the 
> can but knocked the yoke which rolled the plane and made 
> him push his foot forward and the can got stuck under the 
> pedals with the rudder all the way over and the partial 
> cup of Coke was knocked over into some electrical stuff 
> and shorted it out and killed all the engines on one side 
> and the stewardess fell onto the pilot so he couldn't see 
> and then ...
> 
> Geez, I'm not flying anymore.
> 
> ;-)

Curt, I apologize for even beginning to suggest that you
were stacking things up ...

> 
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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Curtis L. Olson
Jon S Berndt writes:
> On 10 Dec 2002 15:18:48 -0800
>   Tony Peden <[EMAIL PROTECTED]> wrote:
> >
> >I don't know ... it sound like you are really starting to 
> >stack up the failures.
> 
> I don't know ... I was thinking the other day: what if the 
> pilot was pouring a can of Coke into a cup on the flight 
> deck and dropped the can and it rolled under the pedals 
> and he set his cup down and reached down to pick up the 
> can but knocked the yoke which rolled the plane and made 
> him push his foot forward and the can got stuck under the 
> pedals with the rudder all the way over and the partial 
> cup of Coke was knocked over into some electrical stuff 
> and shorted it out and killed all the engines on one side 
> and the stewardess fell onto the pilot so he couldn't see 
> and then ...
> 
> Geez, I'm not flying anymore.

The only time I got off a plane was when the pilot walked on carring a
duck in one hand and a cat in the other.

Curt.
-- 
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Twin Cities[EMAIL PROTECTED]  [EMAIL PROTECTED]
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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Jon S Berndt
On 10 Dec 2002 15:37:08 -0800
 Tony Peden <[EMAIL PROTECTED]> wrote:


On Tue, 2002-12-10 at 15:27, Jon S Berndt wrote:


I don't know ... I was thinking the other day: what if the 
...

Curt, I apologize for even beginning to suggest that you
were stacking things up ...


Hey! It could happen!

:-)

Jon

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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread John Check
On Tuesday 10 December 2002 4:22 pm, Curtis L. Olson wrote:
>
> You could also imagine that something downstream of this central
> transmission could fail, again leaving you in an unhealthy state.  I

"unhealthy state" you guys crack me up. 
Sounds more like brown trousers time to me ;-)

> agree with the people who are saying this can be made to fly safely
> within reasonable tolerances, but I also think there are certain
> phases where it's probably always going to be a little less safe than
> a helicopter, or perhaps you could say that certain types of failures
> at certain times would be less survivable in the BA-609 ...
>
> Regards,
>
> Curt.

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Re: [Flightgear-devel] [OT] BA-609, V-22 derivative aircraft

2002-12-10 Thread Tony Peden
On Tue, 2002-12-10 at 19:24, John Check wrote:
> On Tuesday 10 December 2002 4:22 pm, Curtis L. Olson wrote:
> >
> > You could also imagine that something downstream of this central
> > transmission could fail, again leaving you in an unhealthy state.  I
> 
> "unhealthy state" you guys crack me up. 
> Sounds more like brown trousers time to me ;-)

Fighter pilots do it best, they talk about how a missile could ruin
their whole day.


> 
> > agree with the people who are saying this can be made to fly safely
> > within reasonable tolerances, but I also think there are certain
> > phases where it's probably always going to be a little less safe than
> > a helicopter, or perhaps you could say that certain types of failures
> > at certain times would be less survivable in the BA-609 ...
> >
> > Regards,
> >
> > Curt.
> 
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