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Spotting Traffic



 
 
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  #1  
Old May 1st 06, 05:37 PM posted to rec.aviation.piloting
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Default Spotting Traffic

In a previous article, Larry Dighera said:
If one assumes a worst case scenario of 250 knot traffic, six seconds
works out to 4,167'/second, or 25,000' (greater than 4 nautical
miles).


This sounds like orbital speed.

250 knots is 250 (nautical) miles per HOUR, about 250*6000 feet per
hour, or about 250*100 feet per minute. 25000 feet every sixty seconds,
or 2500 feet every six seconds. Half a mile in six seconds. Opposite
direction traffic at the same speed and your relative change is a mile
in six seconds.

Jose


Damn decimal places.... :-)


You non-Unix/non-Mac users don't know what you're missing:

[tomblin@chicago ~]$ units
2084 units, 71 prefixes, 32 nonlinear units

You have: 250 knots
You want: feet per 6 seconds
* 2531.7148
/ 0.0003949892
You have: ^D
[tomblin@chicago ~]$

250 knots is 2531.7 feet in 6 seconds.


--
Paul Tomblin http://xcski.com/blogs/pt/
"You must be smarter than this stick ---- to put a machine on the
Internet."
  #2  
Old May 1st 06, 05:46 PM posted to rec.aviation.piloting
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Default Spotting Traffic

On Mon, 1 May 2006 16:37:27 +0000 (UTC),
(Paul Tomblin) wrote in ::


You non-Unix/non-Mac users don't know what you're missing:

[tomblin@chicago ~]$ units
2084 units, 71 prefixes, 32 nonlinear units

You have: 250 knots
You want: feet per 6 seconds
* 2531.7148
/ 0.0003949892
You have: ^D
[tomblin@chicago ~]$

250 knots is 2531.7 feet in 6 seconds.



I've been a Unix SysAdm since '84, but your response is too arcane for
me. What is that 'bc' or something?

  #3  
Old May 1st 06, 06:38 PM posted to rec.aviation.piloting
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Default Spotting Traffic

In a previous article, Larry Dighera said:
On Mon, 1 May 2006 16:37:27 +0000 (UTC),
(Paul Tomblin) wrote in ::
You non-Unix/non-Mac users don't know what you're missing:

[tomblin@chicago ~]$ units
2084 units, 71 prefixes, 32 nonlinear units

You have: 250 knots
You want: feet per 6 seconds
* 2531.7148
/ 0.0003949892
You have: ^D
[tomblin@chicago ~]$

250 knots is 2531.7 feet in 6 seconds.



I've been a Unix SysAdm since '84, but your response is too arcane for
me. What is that 'bc' or something?


No, it's units(1). Just like it says after the prompt.


--
Paul Tomblin http://xcski.com/blogs/pt/
I haven't had any mail from my mother since her ISP ended up in the RBL.
I deny that I nominated them...
-- Peter Corlett
  #4  
Old May 1st 06, 05:52 PM posted to rec.aviation.piloting
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Default Spotting Traffic

"Paul Tomblin" wrote in message
...
You non-Unix/non-Mac users don't know what you're missing:


You non-Internet users don't know what you're missing:

http://www.google.com/search?q=250+k...+per+6+seconds


  #5  
Old May 3rd 06, 03:36 PM posted to rec.aviation.piloting
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Default Spotting Traffic

On 2006-05-01, Peter Duniho wrote:
"Paul Tomblin" wrote in message
...
You non-Unix/non-Mac users don't know what you're missing:


You non-Internet users don't know what you're missing:

http://www.google.com/search?q=250+k...+per+6+seconds


Of course, Google runs Linux :-)

--
Yes, the Reply-To email address is valid.
Oolite-Linux: an Elite tribute: http://oolite-linux.berlios.de
  #6  
Old May 1st 06, 07:01 PM posted to rec.aviation.piloting
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Default Spotting Traffic

250 knots is 2531.7 feet in 6 seconds.

Actually, the n knots ~= 10n fps is a useful piece of trivia.

Jose
--
The price of freedom is... well... freedom.
for Email, make the obvious change in the address.
  #7  
Old May 1st 06, 07:06 PM posted to rec.aviation.piloting
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Default Spotting Traffic

Actually, the n knots ~= 10n fps is a useful piece of trivia.

Damn decimal places! n knots ~= 10n fp6s. Still useful.

Jose
--
The price of freedom is... well... freedom.
for Email, make the obvious change in the address.
 




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