Except the concept of the 777 came in 1988.
Um... so?
We can use XX century tech, but Zor explicitly stated oil and fossil fuels are abundant in this "paradise" world.
You're missing the fact that it's not all about gas cost.
Right; so I think because you've been outperformed due to cheap oil in this world, you're now bitter and grasping at straws.
Well, here's the simple deal: a fucking 14-20 million ENGINE will have maintenance costs on the order of it's price. A 1,5-2 million engine will too.
There's maintenance costs as well, and the Russian ones will take more simply because of the engines.
Um... you're ready to actually prove that 4 PS-90A, each costing say 2 million, will lose maintenance to your twinjet? There was an analysis which has shown that the only real edge Boeings have over the Il-96 is fuel consumption (admittedly, at $600 to $1400 per ton that's a big issue).
Quadjets went out of style in the 70s
Yep, they fucking did. They should have, with the prices being that high. But really let's look at one of the most modern airliners:
Who the fuck are you kidding, Beowulf?
And don't fucking
tell me that he needs to blow money on a fucking GENx type engine to make widebody craft run at twinjet
Show me the economy if you're so smart; but I'll tell you, really it's the fuel (up to 40%), and I've read the papers. But with avia bensin at $160 ton, that's not a huge factor. Welcome to reality.