kindjordan
Posts: 55
Joined: Sat Nov 06, 2004 11:30 pm

High Ground Speed On Flight Today

Mon Dec 27, 2004 11:34 am

Hey guys.....today i was on jetblue 118 from MSY>JFK....about 20 minutes from our initial descent from 330, I was watching the moving map on tv's...and i saw the ground speed was indicating 691mph ground speed. I thought this was alittle high and was wondering if anyone here could confirm this. I thought maybee the gps was off a little as they sometimes are....any input would be apreicated-J
 
SATL382G
Posts: 2679
Joined: Sat Aug 14, 2004 12:02 am

RE: High Ground Speed On Flight Today

Mon Dec 27, 2004 11:47 am

Must have had a nice tail wind....
"There’s nothing quite as exhilarating as being shot at and missed" --Winston Churchill
 
futureualpilot
Posts: 2404
Joined: Thu May 25, 2000 10:52 am

RE: High Ground Speed On Flight Today

Mon Dec 27, 2004 11:50 am

On my flight from LAX-ORD on an AA 763 on 28NOV04 we were at 700mph+ according to our pilots.....kind of a cool thought!
Life is better when you surf.
 
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Starlionblue
Posts: 17212
Joined: Fri Feb 27, 2004 9:54 pm

RE: High Ground Speed On Flight Today

Mon Dec 27, 2004 11:50 am

Well I could explain. Do you know anything about wormholes?  Big grin

Seriously, ground speed is the speed of the plane relative to the ground. Airspeed is the speed of the aircraft relative to the air around it. So if the air is moving in the same direction as the plane (wind, jetstream, etc...) relative to the ground the ground speed can be quite high despite airspeed remaining well within acceptable limits. This phenomenon is of course referred to as "tailwind".

691mph=1112km/h. This is in the high range but not unusual. Jetstreams can move at several hundred mph.

[Edited 2004-12-27 03:56:44]
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
kindjordan
Posts: 55
Joined: Sat Nov 06, 2004 11:30 pm

RE: High Ground Speed On Flight Today

Mon Dec 27, 2004 11:52 am

thanks for the reply...it's starting to make sence now Smile

[Edited 2004-12-27 03:53:45]
 
2H4
Posts: 7960
Joined: Tue Oct 19, 2004 11:11 pm

RE: High Ground Speed On Flight Today

Mon Dec 27, 2004 12:46 pm

Here's a site you might be interested in:

http://www.groundspeedrecords.com


2H4
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Aaron747
Posts: 8560
Joined: Thu Aug 07, 2003 2:07 am

RE: High Ground Speed On Flight Today

Tue Dec 28, 2004 2:42 am

cool story jordan. when I was returning to SJC from NRT on AA128 last March, we rode the jet stream for about two hours just southwest of alaska. the flight progress screen was showing our groundspeed to be over 780 mph.

now, it's important to keep in mind that groundspeed is irrelevant as far as the aircraft is concerned. airplanes only know airspeed.
If you need someone to blame / throw a rock in the air / you'll hit someone guilty
 
fspilot747
Posts: 3455
Joined: Mon Nov 01, 1999 2:58 am

RE: High Ground Speed On Flight Today

Tue Dec 28, 2004 2:50 am

But groundspeed means everything to the passengers  Big grin
 
kindjordan
Posts: 55
Joined: Sat Nov 06, 2004 11:30 pm

RE: High Ground Speed On Flight Today

Wed Dec 29, 2004 10:50 pm

LOL....accoring to groundspeedrecords.com another jetblue airbus has the record on the site....722mph recorded between LGB>JFK....hey, when you have a 250mph wind pushin yo-ass you gonna move Big grin!

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