Thoughts on "migration like" flights

Soo i came across this article

basically, airbus tested this thing out where they got a a350 -900 and -1000 to fly really close together, the -1000 used the -900 wake to prevent fuel loss. Apparently in the test it saves around 6 tons of fuel. I also forgot to mention it is a 7:40 flight across the atlantic from toulouse to montreal in this close formation. Airbus think they can implement this maybe mid decade they stated. I wanna hear ur guys thoughts

Anyways here is the link to the article

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Basically recycling wasted drag. Very interesting! Once in a 757 we drifted across a contrail of an aircraft that had passed in the opposite direction. It was well after the other aircraft passed but it was a big force - unnerved lots of passengers. Lots of wasted energy. But I didn’t expect it could be used!

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USAF C17’s have been doing this for a while now. Its a sensible concept, the tough part of doing it commercially is organizing and executing it regularly within safety guidelines. There’s a lot of moving parts here to make this work.

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Well, this has to be part of the current efforts to get planes flying with no or little negative impact on our planet and future. Rather clever.
I read also somewhere about how much fuel could be saved by improving flight plans and getting a more flowing ATC.
Cool stuff.

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