Dear John, Jim, and All,
My understanding is that air craft actually measure pressure in
something like kilopascals and that this pressure measurement is then
changed (dumbed down ?) to a measure that implies that a measure of
length has been made somehow.
I suppose you could dangle a mass tied on a piece of string out the
window of the plane so that it drags along the ground, but it sounds
impractical!
By the way, some approximate conversions from pressure to height might
go something like this:
Pressure
Altitude
kilopascal
metres
100
0
90
1 000
80
2 000
70
3 000
65
4 000
60
5 000
45
6 000
40
8 000
22
10 000
19
12 000
15
14 000
10
16 000
7
18 000
4
20 000
3
25 000
1
30 000
Cheers,
Pat Naughtin
Author of the ebook, Metrication Leaders Guide, that you can obtain
from http://metricationmatters.com/MetricationLeadersGuideInfo.html
PO Box 305 Belmont 3216,
Geelong, Australia
Phone: 61 3 5241 2008
Metric system consultant, writer, and speaker, Pat Naughtin, has
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On 2010/04/19, at 05:57 , John M. Steele wrote:
It is my understanding that European air space is controlled in feet.
The Wikipedia article on "flight level" shows a metric structure for
Russia, China, Mongolia, North Korea and various CIS States (non-
European former USSR satellites). Everybody else flies in feet (I
think).
From: James R. Frysinger <[email protected]>
To: U.S. Metric Association <[email protected]>
Sent: Sun, April 18, 2010 3:13:10 PM
Subject: [USMA:47149] Air flight altitudes in meters
My impression had been that all air flight altitudes were given and
heeded in terms of feet. But this article implies flight altitudes
in meters.
http://www.foxnews.com/world/2010/04/17/european-skies-largely-remain-fly-zone/
Jim
-- James R. Frysinger
632 Stony Point Mountain Road
Doyle, TN 38559-3030
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