Fine example of Tarver Engineering release for service

"Robert Moore" wrote in message
. 7...
fudog50 wrote
IIRC, the only indicator that had both pitot and static inputs
was the VSI/Rate of climb indicator and the internal bellows in the
gauge performed the differential action. Airspeed has pitot inputs
only. Baro Alt. has static port input only. Wish I could draw you a
diagram on here, it would explain everything.

Ummmm.....I think that you definately DO NOT recall correctly!
Static Pressure feeds Altimeter, Airspeed, and VSI.
Pitot Pressure feeds only Airspeed.

The Pitot Pressure from the Pitot Tube is a combination of Static
and RAM pressure.

You remember wrong, as usual, Bob.

IAS is one pressure subtracted from the other.

Since the 1960s, large airliners have used a pitot port and a static port.

The Bombardier GBX being a notable exception to modern pitot/static systems,
with it's prominent nose boom and pitot tube.

On Thu, 26 Feb 2004 13:23:52 -0800, "Tarver Engineering"
wrote:


"Robert Moore" wrote in message
.7...
fudog50 wrote
IIRC, the only indicator that had both pitot and static inputs
was the VSI/Rate of climb indicator and the internal bellows in the
gauge performed the differential action. Airspeed has pitot inputs
only. Baro Alt. has static port input only. Wish I could draw you a
diagram on here, it would explain everything.

Ummmm.....I think that you definately DO NOT recall correctly!
Static Pressure feeds Altimeter, Airspeed, and VSI.
Pitot Pressure feeds only Airspeed.

The Pitot Pressure from the Pitot Tube is a combination of Static
and RAM pressure.

You remember wrong, as usual, Bob.

IAS is one pressure subtracted from the other.

Which is exactly what Robert said in the bit you snipped. To wit:

"The bellows inside the airspeed indicator uses the ambient static
pressure from the static port to cancel out the static component from
the Pitot Tube leaving only the RAM component to move the airspeed
needle."

Since the 1960s, large airliners have used a pitot port and a static port.

Please provide one reference for this.

The Bombardier GBX being a notable exception to modern pitot/static systems,
with it's prominent nose boom and pitot tube.

Ok...So a pitot tube only exists on a nose boom?

And Bombardier GBX? Are you referring to the Bombardier Global Express?
It's the closest I can find on their web site. If so I can't see a
prominent nose boom in the pictures there. Car to enlighten me?

Phil
--
Great Tarverisms #7

Pitot: French word meaning tube.

John

alt.disasters.aviation
25 February 2002

"Phil Miller" wrote in message
...

Robert is being rediculess to claim that a pitot tube produces some total
pressure and then the static port pressure is subtracted twice to make IAS.
The whole point of using a static port is to be able to take the guts out of
a pitot tube and produce only pitot pressure, thus increasing the
reliability of the system.

Perhaps this will help:

"Tarver Engineering" wrote:


"Gord Beaman" wrote in message
.. .
"Jim Knoyle" wrote:

Hang on here a second now Jim, you still need two samples. As Dan
says you need 'static pressure' to read the altitude from and you
need 'pitot pressure' (ram air pressure) as well as the static
pressure to derive the airspeed reading from. Sounds like you're
saying that you can read 'both' from just the 'ram air pressure'
alone. Or did I misunderstand you?

Jim has finally figued out what a pitot tube is, but somehow he still wants
to be correct in his archive troll. It is a great paradox.


I know...ain't life a bitch John

--

-Gord.

On Thu, 26 Feb 2004 19:25:26 -0800, "Tarver Engineering"
wrote:


"Phil Miller" wrote in message
.. .

Robert is being rediculess to claim that a pitot tube produces some total
pressure and then the static port pressure is subtracted twice to make IAS.
The whole point of using a static port is to be able to take the guts out of
a pitot tube and produce only pitot pressure, thus increasing the
reliability of the system.

Perhaps this will help:

Yes that does help, because what Robert said and what Gord said are
practically identical.

"Gord Beaman" wrote in message
. ..
Hang on here a second now Jim, you still need two samples. As Dan
says you need 'static pressure' to read the altitude from and you
need 'pitot pressure' (ram air pressure) as well as the static
pressure to derive the airspeed reading from.

On Thu, 26 Feb 2004 21:06:41 GMT, Robert Moore
wrote:

The Pitot Pressure from the Pitot Tube is a combination of Static
and RAM pressure. The bellows inside the airspeed indicator
uses the ambient static pressure from the static port to cancel
out the static component from the Pitot Tube leaving only the RAM
component to move the airspeed needle.


Phil
--
Great Tarverisms #2

What is the best selling beer in Oz?

Budweiser.

Another illusion shattered.

John

alt.disasters.aviation
18 August 2002

On Fri, 27 Feb 2004 14:33:43 +1100, Phil Miller
wrote:

On Thu, 26 Feb 2004 19:25:26 -0800, "Tarver Engineering"
wrote:


"Phil Miller" wrote in message
. ..

Robert is being rediculess to claim that a pitot tube produces some total
pressure and then the static port pressure is subtracted twice to make IAS.
The whole point of using a static port is to be able to take the guts out of
a pitot tube and produce only pitot pressure, thus increasing the
reliability of the system.

Perhaps this will help:

Yes that does help, because what Robert said and what Gord said are
practically identical.


Oh! And you didn't enlighten me about the Bombardier GBX?


Phil
--
Great Tarverisms #1

The Air Speed Indicator (ASI) shows

You made that up, didn't you?

The IAS indicator says IAS, not ASI.

Why do you come here pretending to know something
when you don't even know the words?

John

Robert Moore wrote:


The Pitot Pressure from the Pitot Tube is a combination of Static
and RAM pressure. The bellows inside the airspeed indicator
uses the ambient static pressure from the static port to cancel
out the static component from the Pitot Tube leaving only the RAM
component to move the airspeed needle.

Bob Moore

Of course...exactly...not rocket science after all...
--

-Gord.

"Gord Beaman" wrote in message
...
Robert Moore wrote:


The Pitot Pressure from the Pitot Tube is a combination of Static
and RAM pressure. The bellows inside the airspeed indicator
uses the ambient static pressure from the static port to cancel
out the static component from the Pitot Tube leaving only the RAM
component to move the airspeed needle.

Of course...exactly...not rocket science after all...

Not even close. Moore is making the same dumbass claim as Knoyle.

The sole reason for using a static port is so the guts can be removed from
the pitot tube, in order to improve reliability. A pitot port produces no
static pressure datum.

Perhaps this will help:

"Tarver Engineering" wrote:

"Gord Beaman" wrote in message
.. .
"Jim Knoyle" wrote:

Hang on here a second now Jim, you still need two samples. As Dan
says you need 'static pressure' to read the altitude from and you
need 'pitot pressure' (ram air pressure) as well as the static
pressure to derive the airspeed reading from. Sounds like you're
saying that you can read 'both' from just the 'ram air pressure'
alone. Or did I misunderstand you?

Jim has finally figued out what a pitot tube is, but somehow he still wants
to be correct in his archive troll. It is a great paradox.


I know...ain't life a bitch John

--

-Gord.

Dave Holford wrote:



wrote:

Was that before or after the first flight? ;-)

running with scissors wrote:

A fine example of the quality results of Tarver Engineering work. As
singed off by John Tarver with applicable 8130.

http://www.aart-jan.net/images/aart_...egtuigwrak.jpg

photograph courtesy of Aart-Jan, (its not tarver in the pic, it's
Aart's father inspecting the fine work completed by John "the splap"
Tarver).


If ever a picture cried out for a caption, this one does.

Dave

How about "I've heard of unimproved strips but this is
ridiculous" ?
--

-Gord.

JL Grasso wrote:

"Tarver Engineering" wrote:

The whole point of using a static port is to be able to take the guts out of
a pitot tube and produce only pitot pressure, thus increasing the
reliability of the system.

Bwaaaaahwahwahwahwahwahwahwahwah3wahw!

Keyboard!

JL Grasso wrote:
On Thu, 26 Feb 2004 19:25:26 -0800, "Tarver Engineering"
wrote:


The whole point of using a static port is to be able to take the guts out of
a pitot tube and produce only pitot pressure, thus increasing the
reliability of the system.


Bwaaaaahwahwahwahwahwahwahwahwah3wahw!

Jerry


Yes, those static ports are pretty unreliable! :-)


Matt