RNAV vs IFR GPS

Teacherjh wrote:

VOR-DME is RNAV too? Now I'm confused.

Not by itself, but RNAV can be based on VOR, DME, and a computer to put it all
together. In fact I believe that was the first system.

Jose

Naw, they took four-course low-frequency range stations and ran them through an
IBM .2 mainframe to derieve RNAV tracks and bearings.

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

"PaulaJay1" wrote in message
...
Coming into CLE the other day the controller ask if I had RNAV and I said
no,
that I was /G ,that is, IFR GPS. He said that it was the same and gave me
direct.....
Is it the same, should I have answered yes to his question? Of course I
can
navigate direct but do I have "RNAV"?

Chuck

Yes, Yes, and Yes.
I doubt the controller cared *which* kind of RNAV you had,
only that you had the navigation capability.
Even if you'd had only LORAN, you'd still have answered "Yes".
---JRC---

What do you mean only LORAN? Just kidding. I realize that it is now ancient
technology but it works just fine.

RNAV means that you can navigate random routes. LORAN and GPS both provide
that capability.

How come there is no designator for an approach certified GPS? /G only means
that you have at least an enroute and terminal certified GPS. I presume that
pilots who have an approach certified GPS have to ask for a specific
approach.
-------------------------------
Travis

wrote in message ...
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john smith wrote:
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Richard Hertz wrote:
You are filing /G and you don't know the answer to this?
Where do people get their IFR 'training' these days?

That's not necessarily a fair criticism.
For those of us who have been flying since the 70's, we still think =
and
refer to airspace as TCA's, TRSA's and ARSA's. So we still remember =
RNAV
as VOR/DME, while LORAN and GPS are essentially global navigation
systems (although, technically, that's still another, different form
altogether).
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I;ve been flying since the late 1950s and I adjust. TCA, and ARSAs =
seem
quite alien to me these days. Then again TRSAs don't because we still =
have
those.
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I think the criticism is quite justified.
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Me too, Sammy.
I've been flying since the middle fifties, and I've adjusted pretty =
well, too.
GPS approaches are a far cry from 4-course Range orientations,
and the Range Approaches that I learned to do without an ADF.
(Follow the edge of a leg into the cone of silence, then turn to xxx=BA =
and descend.)
Oooh, those were fun!
And why do I remember 3023.5 kHz? (Except they were kc back then.)
---JRC---

Naw, they took four-course low-frequency range stations and ran them through an
IBM .2 mainframe to derieve RNAV tracks and bearings.


That never worked because they used the Pentium processor.

2+2=3.99992423 for small values of 2

Jose

--
(for Email, make the obvious changes in my address)

"PaulaJay1" wrote in message
...

Coming into CLE the other day the controller ask if I had RNAV
and I said no, that I was /G ,that is, IFR GPS. He said that it was
the same and gave me direct.....
Is it the same, should I have answered yes to his question? Of course
I can navigate direct but do I have "RNAV"?


RNAV is any form of area navigation, GPS is just one example. Had you filed
/G?

"Richard Hertz" wrote in message
et...

You are filing /G and you don't know the answer to this?


If he's filing /G why does the controller have to ask if he has RNAV?

"David Brooks" wrote in message
...

VOR-DME is RNAV too? Now I'm confused.


No, he's referring to a VOR/DME based form of RNAV that was initially called
a Course Line Computer, then it was called RNAV specifically, then the term
RNAV was expanded to include all area navigation systems.

wrote in message ...

He did not say that right. There is VOR/DME-RNAV as well as
INS RNAV, IRS RNAV, GPS RNAV, and LORAN RNAV.


IRS RNAV?

"Teacherjh" wrote in message =
...

Naw, they took four-course low-frequency range stations and ran them =
through an
IBM .2 mainframe to derieve RNAV tracks and bearings.

=20
That never worked because they used the Pentium processor.
=20
2+2=3D3.99992423 for small values of 2
=20
Jose

Those were the days of 650s, and later 709s.
Vacuum triodes, man... Lots of 'em! And magnetic drums, too.
If I remember right, the 7090/7094s were the first solid-state IBM =
mainframes.
(There's gotta be some old IBMer here with reliable info about that.)

Our 650 was the envy of everyone in the region.
It had 64 *words* of high-speed magnetic-core scratchpad memory!
---JRC---

"Steven P. McNicoll" wrote in message =
hlink.net...
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wrote in message =
...

He did not say that right. There is VOR/DME-RNAV as well as
INS RNAV, IRS RNAV, GPS RNAV, and LORAN RNAV.

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IRS RNAV?
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Not commonly used, because of the high tax rate, maybe?