Fine example of Tarver Engineering release for service

"fudog50" wrote in message
...
snip

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.

Ok, what they taught me was that the VSI ran on static pressure and
*metered* static pressure.

I'm not aware that pitot pressure (which is directly related to
airspeed) would be of use for a VSI.
Can you explain how that would be used in a VSI? I can't see any
connection.

The only time pitot pressure = static pressure is if the aircraft is
stationary and there is no wind.

The difference between static port pressure and static pressure that was
restricted as to the rate it
could alter (inside the VSI) by way of a port that is very small in
comparision to the main static port gives
the rate that pressure (and therefore altitude) is changing, giving you
a rate of climb or descent.

Airspeed has pitot inputs only.

ISTR that an ASI that can give you a TAS instead of an IAS had static
pressure and temp sensors
in addition to the pitot inputs, *or* it was in some way
coupled to the altimeter, so that it could show a corrected TAS based on
density
altitude, but I've never actually had one in my hand. IIRC, a PA28-180R
I used to fly out
of Broken Hill many years ago had a TAS meter fitted, but I wasn't aware
of exactly how it worked at the time.

Baro Alt. has static port input only.

Yup. An altimeter is basically an aneroid barometer.

Wish I could draw you a
diagram on here, it would explain everything.

It always helps.

The CO

"The CO" wrote in message =
...
=20
"fudog50" wrote in message
...
snip
=20
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.
=20
Ok, what they taught me was that the VSI ran on static pressure and
*metered* static pressure.
=20
I'm not aware that pitot pressure (which is directly related to
airspeed) would be of use for a VSI.
Can you explain how that would be used in a VSI? I can't see any
connection.
=20
The only time pitot pressure =3D static pressure is if the aircraft is
stationary and there is no wind.
=20
The difference between static port pressure and static pressure that =
was
restricted as to the rate it
could alter (inside the VSI) by way of a port that is very small in
comparision to the main static port gives
the rate that pressure (and therefore altitude) is changing, giving =
you
a rate of climb or descent.
=20
Airspeed has pitot inputs only.
=20
ISTR that an ASI that can give you a TAS instead of an IAS had static
pressure and temp sensors
in addition to the pitot inputs, *or* it was in some way
coupled to the altimeter, so that it could show a corrected TAS based =
on
density
altitude, but I've never actually had one in my hand. IIRC, a =
PA28-180R
I used to fly out
of Broken Hill many years ago had a TAS meter fitted, but I wasn't =
aware
of exactly how it worked at the time.
=20
Baro Alt. has static port input only.
=20
Yup. An altimeter is basically an aneroid barometer.
=20
Wish I could draw you a
diagram on here, it would explain everything.
=20
It always helps.
=20
The CO
=20
=20
You're just trying to be nice, aren't you, CO?
We all know the fudog's memory failed him this time.

One thing -- The pitot pressure isn't "directly related to airspeed",
(and we know you meant IAS, not TAS).
The differential pressure is really related to the airspeed *squared*.
---JRC---

"John R. Copeland" wrote in message
...

"The CO" wrote in message
...

I'm not aware that pitot pressure (which is directly related to
airspeed)

You're just trying to be nice, aren't you, CO?

:^)

We all know the fudog's memory failed him this time.

Well, I thought the bit about a VSI using pitot was a bit, um, well,
wrong.

One thing -- The pitot pressure isn't "directly related to airspeed",
(and we know you meant IAS, not TAS).

One, sorry didn't mean 'directly' in the physics/math sense, only that
it
was the input for an ASI (compared to static pressure of course)
An airspeed indicator gives you Indicated Air Speed. Q.E.D.

(A TAS indicator can also give you a TAS readout as it can apply a
correction
for the density altitude, but IAS is what you base your flying on (as
opposed to nav).

The differential pressure is really related to the airspeed *squared*.

Yes.

The CO

"Tarver Engineering" wrote in message ...
"running with losers" wrote in
message om...

"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


snipping posts to claim that other people posted waht someone else
entirely posted.

pathetic, childish, immature, and the sure sign of your desparte need
to obfuscate your stupidity

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).

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

"Dave Holford" wrote:
http://www.aart-jan.net/images/aart_...egtuigwrak.jpg
If ever a picture cried out for a caption, this one does.

good idea for a thread...

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.