Supposing a growing Earth population (up to 30 billion humans) aircraft have to change... They have to be even greater than today's jumbo jets and they have to be faster as well - if it is possible then supersonic... Development in both dimensions (size and speed) is needed in order to reach a much higher capacity of one single airplane - so that the number of airplanes in the air doesn't have to increase and air traffic remains as secure as nowadays that way...
The Jumbo Shuttle concept of Boeing (I think it is Boeing because it is based on the Sonic Cruiser, the Ecoliner and the flying wing concepts of Boeing) has got 3 full passenger decks and seems to be capable of supersonic speeds because of its very aerodynamic shape: the airliner of the future... Beyond its high capacity the Jumbo Shuttle concept must be also very fuel efficient because of the 2 giant turbo-fan jet engines underneath the delta-wings...
However such a huge airplane cannot be made of aluminium because it would be just too heavy... It would be best regarding the weight of the Jumbo Shuttle if you could use plastic for the fuselage and for the wings... Only that plastic is maybe not strong enough for such a big aircraft... Except you could reinforce plastic by springs (just like in clutch discs)...
In the fuselage the thermal isolation could be made of helium-filled panels which could strenghten the outside plastic as they were flexible like a steel spring and they could even lift the fuselage a little bit just like helium gas lifts airships... Inside of the wings you could implement steel springs...
Of course, nearly all the luxuries designed for the iconic Boeing 747-8 Intercontinental could be fitted into the Jumbo Shuttle as well...
Best wishes, Joseph de la Mikula and Team
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