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Philosophy, Religion & Society / Re: Trump
« Last post by Action80 on Today at 02:41:25 AM »Wow, you want the "day in court," based on this.
The quote from Maggie teneva (who she?) is simply a throwaway line at the end of an article about entertaining your kids on longhaul.
The "stopping for fuel" link doesn't go anywhere.
The Continental Airlines example is undated, has no reference, and (if true) sounds like poor planning by the airline in not using aircraft with apprpriate capacity/range.
ETOPS is not a restriction; it is a relaxation of previously existing routes that require aircraft to route within 1-hour flying time of a suitable diversion airfield. In the case of the Airbus A350, this can now be extended to 5hrs 30min at single engine cruise speed (frightening but true), meaning that only Antarctica is off limits (unless, of course, one of the ice-runways is the destination).
The USAF, being outwith ICAO regulations, is not limited by ETOPS. The United States maintains "landing strips on certain uninhabited islands in remote locations" for military operational, security and diplomatic purposes.
Aircraft often divert from route for reasons of security, medical or technical emergency, but beyond the apocryphal stements you have made, I challenge you to identify a single recent occurance made purely for a splash and dash. Any commercial aircraft diverting from its planned route purely for a fuel stop would find its captain and dispatcher having a series of one-way conversations with management.
And yes, jetstreams are a perpetual phenomenon, but no they are not alway at the extreme stengthsyou suggest, and almost without excdeption are a west-to-east direction. Apart from local eddies there is absolutely no, general, assistance, anywhere on Earth, to westbound travel.
Your statement "Flights are canceled all the time, especially long haul flights" is simply untrue. For example, I've just looked at data on FR24 for LATAM's Santiago-Melbourne service LA804/805; run with a Boeing 787 Dreamliner. The service operates 3 times a week in each direction and between 15 Feb and today, 12 weeks, 36 planned return trips; one cancellation.
They don't. Flights are canceled all the time, especially long haul flights. See this quote by travel writer Maggie Teneva:
“Long-haul flights are often associated with long layovers and delays or cancellations.”
If there are unexpected changes to the jet stream or winds mid-flight, a non-stop flight might even stop for fuel:
“ Dozens of Continental Airlines flights to the East Coast from Europe have been forced to make unexpected stops in Canada and elsewhere to take on fuel after running into unusually strong headwinds over the Atlantic Ocean.
The stops, which have caused delays and inconvenience for thousands of passengers in recent weeks, are partly the result of a decision by United Continental Holdings Inc., the world's largest airline, to use smaller jets on a growing number of long, trans-Atlantic routes. ”
Per ETOPS, plane flight routes are required to be in vicinity of airports or landing strips for unexpected stops like that. Even long haul flights over oceans need the capability to make detour routes to islands with landing strips in case something like the above happens. The US Military is even known to maintain landing strips on certain uninhabited islands in remote locations for ETOPS purposes.
The vaccine was created to modify political views and eventually control the mind; ironically, the people most likely to take the vaccine were the least in need of mind control. They were already subservient to big brother. You wouldn't notice any difference in their behavior before and after taking the vaccine.
I would say it is a good thing the routes are spaced so far apart.QuoteWhy are westbound transatlantic routes located hundreds of km away from eastbound routes?
You're talking about the jetstreams as being a constant phenomenon.
They aren't, they are variable, in location, direction and velocity. Like I said, its just a wind. If its above 60 kts, as you say, they term it a jetstream, but its still just a wind.
And you are absolutely correct that favourable jetstreams (like other winds) are exploited for the purpose of speed and economy, but if the jetstream is absent, or unfavourable, the flights still occur.
Just look at the post-Covid-resurrected Qantas/LAN services between Chile and Australasia; they take place on schedule every time, eastbound and westbound. They can't be that anomalous can they?
Now try Googling Air France flight AF174 on 8 May. (Or here's a link);
https://www.flightradar24.com/data/flights/af174?utm_campaign=website&utm_medium=email&utm_source=sendgrid.com#351eba3d
Airbus A350 F-HUVC departed Paris CDG as AF174 for Mexico City but developed a problem over Newfoundland and returned to CDG. Flight tracking data shows that the return leg was performed almost completely along the same route and at a similar altitude as the outbound leg. Pretty dumb with a 300mph wind wasn't it, or maybe the airline actually knew the windspeed?
Why are westbound transatlantic routes located hundreds of km away from eastbound routes?
Looking at flights between NY and London (click to see route):
BA 185 (EGLL - KEWR)
United 941 (EGLL - KEWR)
United 16 (KEWR - EGLL)
The FlightAware anticipated routes are quite similar in both directions, but the actual routes for past flights are really remote from each other:
The two westbound routes are either 800 km north or 1,000 km south of the eastbound route (the dotted line shows the shortest path).
Why are the two westbound routes different and so remote from each other? Why this difference of about 1,800 km?
Why BA 185 route seems to be composed of two arcs?
Did the pilots changed their mind in flight because of the jet streams? Is it related to ETOPS constraints, or alternate airport at Santa Maria? or something else?