The World's First 20-Hour Airline Flight

Re:The World's First 20-Hour Airline Flight by bluGill on Friday October 18, 2019 @08:20AM (#21290706)

London to Sydney has good stopover points, since you are over land about half way through the trip. North American to Sydney doesn't have a good stopping place in the middle, if you only have a few more hours to you may as well just get there instead of stopping.

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Re:The World's First 20-Hour Airline Flight by bluesquared on Friday October 18, 2019 @08:35AM (#21290823)

Pardon my ignorance, but what about Honolulu?

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Re:The World's First 20-Hour Airline Flight by bluGill on Friday October 18, 2019 @11:04AM (#21291974)

The detour it too far. Remember the earth not flat: the shortest line is curved not straight. The most direct route typically goes too far north. A stop in Russia or China would make more sense, but even than the detour is a bit too much.

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Re:The World's First 20-Hour Airline Flight by mastazi on Monday October 21, 2019 @12:56AM (#21309446)

> The most direct route typically goes too far north.

This only happens when departure and arrival are both in the Northern Hemisphere, if that's the case, great circle routes appear as curved towards the North when plotted on a 2D map.

But here we are going from Northern to Southern hemisphere, so the great circle route will appear S-shaped, and the middle section will not be very far away from a straight line drawn on a 2D map.

This is the great circle route SFO-SYD, Honolulu is pretty close as you can see http://www.gcmap.com/mapui?P=sfo-syd

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Re:The World's First 20-Hour Airline Flight by ryanlol on Friday October 18, 2019 @12:39PM (#21292810)

I'm just a lowly PPL so I have zero practical experience with this kind of route planning, what am I missing here? https://i.succ.in/6mEsINqD.png

I just don't see how you could reasonably stop in Russia or China while flying from the US to Sydney.

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Re:The World's First 20-Hour Airline Flight by bluGill on Friday October 18, 2019 @01:35PM (#21293368)

Different routes go different directions. Try flying from farther north. Also try flying to the western shore of Australia.

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Re:The World's First 20-Hour Airline Flight by ryanlol on Friday October 18, 2019 @02:49PM (#21294053)

I don't think there's much demand for direct flights to Western Australia, there's not much there. Surprisingly Qantas does fly a PER-LHR route.

But yeah, I don't think there exists a NA<->AU route with practical stops in China or Russia https://i.succ.in/6myR8ZFQ.png

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Re:The World's First 20-Hour Airline Flight by ryanlol on Friday October 18, 2019 @08:43AM (#21290879)

Looking at the great circles Honolulu is probably fine, however there may be other issues than the location.

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Re:The World's First 20-Hour Airline Flight by mastazi on Monday October 21, 2019 @12:56AM (#21309450)

You are right, this is the great circle route SFO-SYD http://www.gcmap.com/mapui?P=sfo-syd

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