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: Greg R_
Date: 2006 Jul 17, 13:00 -0500
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 post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
From: Greg R_
Date: 2006 Jul 17, 13:00 -0500
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
-~----------~----~----~----~------~----~------~--~---
