All times are UTC - 6 hours [ DST ]




Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 3 posts ] 
Author Message
 Post subject: Flight routes and tail winds
PostPosted: Thu Oct 24, 2013 3:34 pm 
Offline
wehage65 - FlightAware user avatar

Joined: Thu Oct 24, 2013 3:19 pm
Posts: 1
Hi, I'm new to this forum, forgive what may be stupid questions. I've been tracking Etihad Airways flight 131 from Abu Dhabi to Dulles (IAD) today, 10/24/2013, just for grins. I track things based on the planes I like coming into Dulles as I'm on their flight path and they fly on top of me and I love to know who/what they are. It's route is bizarre to me and I'm sure someone is going to say it's because of tail winds. So, how on earth can flying what has to be 4k miles around save time, fuel, or anything else by going that many miles out of the way? Today it went up and over to Finland, then Greenland, then Quebec before it turned and headed south to Dulles. Seems crazy to me, like they could take an hour or 2 off the flight if they just flew a straight line across. All the European flights do similar things and I just don't get it. Clue me in would you? Thanks, karen


Top
 Profile  
 
 Post subject: Re: Flight routes and tail winds
PostPosted: Fri Nov 22, 2013 8:15 pm 
Offline
BillMerr - FlightAware user avatar

Joined: Fri Sep 27, 2013 11:13 am
Posts: 2
At least part of the explanation is related to the difference between looking at a flat map and an actual globe. Try stretching a string from the Departure to the Destination on a Globe. The actual course over the Globe is called a Great Circle Route, which is the shortest distance between two points.

Other factors are related to the Jet Stream Headwinds on a Westbound flight, which could be up to 150-200 miles per hour, the East Bound North Atlantic Track system, which could be counter to the flight plan of the flight to USA.


Top
 Profile  
 
 Post subject: Re: Flight routes and tail winds
PostPosted: Tue Jan 07, 2014 11:50 pm 
Offline
saketjn - FlightAware user avatar

Joined: Tue Jan 07, 2014 11:38 pm
Posts: 1
Karen,

A most surprising phenomenon! Not only the flight route of ET131 but also the fact that I stumbled across your post as I was tracking for the same flight today (my brother was traveling) and wanted to understand myself what is going on with this flight.

I checked flightaware for the first time and just made couple of clicks on discussion and opened this discussion about the same flight.

The reason for this flight route the way it is shortest route between two points on earth is not a straight line on a flat map, but an arc which is shortest on the globe.

See this link:

http://www.gcmap.com/mapui?P=IAD-AUH


Saket


Top
 Profile  
 
Display posts from previous:  Sort by  
Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 3 posts ] 

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to: