NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Units and area. was: gipsy moth iv
From: Marc Bernstein
Date: 2006 Jul 17, 16:42 -0500
IFR used to be I Follow Roads, is that what you had in mind?
On 7/17/06, Greg R. <gregr_ingest@yahoo.com> wrote:
>
> Red wrote:
>
> > Incidentally, in the US, our airline industry *has* in fact abandoned the
> > nautical mile, if they ever used it.
>
> Au contraire, as the holder of an FAA commercial pilot certificate (plus
> instrument and ground instructor ratings), I think I can speak with a little
> authority on that subject... :-)
>
> Unless things changed overnight and nobody told us, nautical miles IS (are?)
> the standard for measuring distances in air navigation these days (I
> remember when the majority of airspeed indicators were in MPH and the mild
> "consternation" that was caused back in the '70s when the industry
> standardized on knots/nautical).
>
> Take a look at any IFR (Instrument Flight Rules) navigation chart, and
> you'll see that the routes and distances between electronic NAVAIDS (mostly
> VOR/VORTACs these days) are all labeled in nautical miles. Statute miles are
> only useful for giving non-aviation passengers an idea of how fast we're
> moving over the ground at any given time... :-)
>
> --
> GregR
>
> P.S. Bonus points to anyone who knows the "alternate" definition for IFR....
> :-)
>
>
>
> ----- Original Message -----
> From: "Red" <hellosailor@verizon.net>
> To: <NavList@fer3.com>
> Sent: Monday, July 17, 2006 8:50 AM
> Subject: [NavList 766] Re: Units and area. was: gipsy moth iv
>
>
> >
> > Robert-
> > " It is also intesting to note that, near as I can reckon, the nautical
> mile
> > has never been abandoned by the aviation and marine industries in favour
> of the
> > kilometer. "
> >
> > Incidentally, in the US, our airline industry *has* in fact abandoned the
> > nautical mile, if they ever used it. While pilots may still use knots and
> > nautical miles (I don't know how they'd vote) if you ask any US air
> carrier they
> > will tell you airspeeds and distances in plain statute miles and mph. They
> tend
> > to schedule aircraft at a convenient 500 statute mph these days, which is
> also a
> > bit less fuel thirsty than what the aircraft really can do. I don't know
> of any
> > official policies or pronouncements about this, that's just what "every"
> carrier
> > in the small number I've dealt with in the past ten years has used.
> >
> >
> >
> > >
> >
>
>
>
> >
>
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To , send email to NavList-@fer3.com
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From: Marc Bernstein
Date: 2006 Jul 17, 16:42 -0500
IFR used to be I Follow Roads, is that what you had in mind?
On 7/17/06, Greg R. <gregr_ingest@yahoo.com> wrote:
>
> Red wrote:
>
> > Incidentally, in the US, our airline industry *has* in fact abandoned the
> > nautical mile, if they ever used it.
>
> Au contraire, as the holder of an FAA commercial pilot certificate (plus
> instrument and ground instructor ratings), I think I can speak with a little
> authority on that subject... :-)
>
> Unless things changed overnight and nobody told us, nautical miles IS (are?)
> the standard for measuring distances in air navigation these days (I
> remember when the majority of airspeed indicators were in MPH and the mild
> "consternation" that was caused back in the '70s when the industry
> standardized on knots/nautical).
>
> Take a look at any IFR (Instrument Flight Rules) navigation chart, and
> you'll see that the routes and distances between electronic NAVAIDS (mostly
> VOR/VORTACs these days) are all labeled in nautical miles. Statute miles are
> only useful for giving non-aviation passengers an idea of how fast we're
> moving over the ground at any given time... :-)
>
> --
> GregR
>
> P.S. Bonus points to anyone who knows the "alternate" definition for IFR....
> :-)
>
>
>
> ----- Original Message -----
> From: "Red" <hellosailor@verizon.net>
> To: <NavList@fer3.com>
> Sent: Monday, July 17, 2006 8:50 AM
> Subject: [NavList 766] Re: Units and area. was: gipsy moth iv
>
>
> >
> > Robert-
> > " It is also intesting to note that, near as I can reckon, the nautical
> mile
> > has never been abandoned by the aviation and marine industries in favour
> of the
> > kilometer. "
> >
> > Incidentally, in the US, our airline industry *has* in fact abandoned the
> > nautical mile, if they ever used it. While pilots may still use knots and
> > nautical miles (I don't know how they'd vote) if you ask any US air
> carrier they
> > will tell you airspeeds and distances in plain statute miles and mph. They
> tend
> > to schedule aircraft at a convenient 500 statute mph these days, which is
> also a
> > bit less fuel thirsty than what the aircraft really can do. I don't know
> of any
> > official policies or pronouncements about this, that's just what "every"
> carrier
> > in the small number I've dealt with in the past ten years has used.
> >
> >
> >
> > >
> >
>
>
>
> >
>
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
