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Questions on high altitude pressures



 
 
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  #42  
Old November 27th 08, 01:28 PM posted to rec.aviation.piloting
Beauciphus
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Posts: 65
Default Questions on high altitude pressures

"Viperdoc" wrote in message
...
Anthony will never admit that he's wrong, nor will he ever accept a point
of view offered by others.

This is why he is a social outcast and can not find or hold a job.


What kind of troll would ever give up?

All he wants is someone to agrue with. He's found that here. Too bad he
wrecked the place in teh process.


  #43  
Old November 27th 08, 01:46 PM posted to rec.aviation.piloting
Mxsmanic
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Posts: 9,169
Default Questions on high altitude pressures

Dave Doe writes:

What is WAAS or RAIM etc etc - any aviation GPS technology - without GPS
itself?


WAAS is a navigation technology that relies on GPS. It is not _part_ of GPS.

These technologies are little more than GPS enhancements so that
aviators can use them to provided required and determined accuracy.


RAIM isn't even that much, but WAAS is an augmentation technology. The fact
remains that it isn't part of GPS itself.

GPS is otherwise useless for aviation - handy for a VFR pilot - but it
must not be relied on for either altitude or positional data - it's an
aid only.


It's very useful for lateral position in many circumstances, even for
aviation. The altitude data is too unreliable to be useful for aviation.
  #44  
Old November 27th 08, 04:08 PM posted to rec.aviation.piloting
Frank Barchi
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Default Questions on high altitude pressures


"es330td" wrote in message
...
On Nov 24, 8:38 am, Robert Moore wrote:
es330td wrote

Just an extra point....above the transition altitude/level,
we fly a Flight Level, not an Altitude.


Thanks for the reminder. I hope someday to have to care about that. :-)

Just an extra, extra point.....there is no FL 120

Frank


  #45  
Old November 27th 08, 04:49 PM posted to rec.aviation.piloting
Robert Moore
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Posts: 134
Default Questions on high altitude pressures

"Frank Barchi" wrote

Just an extra, extra point.....there is no FL 120


Of course there is.....maybe not in your part of the world, but
I seem to recall transition altitudes as low as 6,000' in some of
the places that I have flown. In fact, San Juan's CTA is listed
as starting at FL 25.

Bob Moore
ATP CFI
PanAm (retired)
  #46  
Old November 27th 08, 06:05 PM posted to rec.aviation.piloting
[email protected]
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Posts: 2,892
Default Questions on high altitude pressures

Mxsmanic wrote:
Dave Doe writes:

What is WAAS or RAIM etc etc - any aviation GPS technology - without GPS
itself?


WAAS is a navigation technology that relies on GPS. It is not _part_ of GPS.


Wrong again.

WAAS is a subsystem of GPS that transmits localized GPS correction
information for the US via a pair of geosynchronous satellites.

WAAS merely provides one more signal among the many that make up the
GPS system.

It's very useful for lateral position in many circumstances, even for
aviation. The altitude data is too unreliable to be useful for aviation.


Wrong again.

With WAAS corrections, the maximum lateral and vertical error is 7.6 m
under all cicumstances, makeing it more than reliable enough to make
vertically-guided landing approaches in IFR.

WAAS LPVs

http://www.faa.gov/about/office_org/...ches/index.cfm

--
Jim Pennino

Remove .spam.sux to reply.
  #47  
Old November 27th 08, 07:36 PM posted to rec.aviation.piloting
Tauno Voipio
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Posts: 64
Default Questions on high altitude pressures

Robert Moore wrote:
"Frank Barchi" wrote

Just an extra, extra point.....there is no FL 120


Of course there is.....maybe not in your part of the world, but
I seem to recall transition altitudes as low as 6,000' in some of
the places that I have flown. In fact, San Juan's CTA is listed
as starting at FL 25.

Bob Moore
ATP CFI
PanAm (retired)



In Finland (EF), the transition altitude is 5000 feet.

--

Tauno Voipio (CPL(A), OH-PYM)
tauno voipio (at) iki fi
  #48  
Old November 27th 08, 08:05 PM posted to rec.aviation.piloting
george
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Posts: 803
Default Questions on high altitude pressures

On Nov 28, 2:28*am, "Beauciphus" wrote:

All he wants is someone to agrue with. He's found that here. Too bad he
wrecked the place in teh process.


Its like he's the very bad comedy turn on before the strippers.
To get to the good stuff you have to wait through the crap.
 




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