NASA planes that could transform air travel by the 2030s

fholbert

Mod's - Please don't edit my posts!
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I've always liked the Boeing truss braced wing concept, from back when it was called the SUGAR. Finally time for someone to start developing a new clean sheet narrowbody design to replace the endless lipstick that's been put on the pigs that are the current generation aircraft. I'm also a big fan of the DC-9 derivative fuselage since it's less middle seats in the system.

I do see one potential issue which is wingspan. X-66A will have a wingspan of 145ft, or 44m. That's slightly more than a 757 with winglets. The majority of gates around the world that currently accommodate a 737 or A320 are pitched for 118ft / 36m wingspan which is the limit for ICAO Code C. Many airports worldwide have entire terminals and ramp areas sized out for Code C aircraft. So a complete replacement of the 737 fleet with a truss braced wing narrowbody seems difficult, running into the same problem that FedEx was having looking to replace the MD-11 with a 777F. In order to make this work, my "conspiracy theory" is that it's going to have folding wingtips, although the almost full length slats on the rendering seem to suggest otherwise. If you look at the 777X the only thing that gets folded is pure structure outboard of the aileron. Folding wingtips was originally proposed on the original 777-200 design but with a folding point inboard of the aileron and it was scrapped because it proved too complicated to fold the structure and associated systems and mechanization. I have a hunch that they're just now starting to get enough data on the performance and reliability of the folding wingtip system from 777X flight tests that they've decided to green light this project with the intention of making this work thanks to that technology. It's possible that the production models will have a significantly different outboard wing design to allow folding.

Back of the napkin math says they'd need to fold around 4m from each wing. That's just slightly more than the 3.5m currently folded on the 777X but a larger percentage of the plane's overall wingspan, so they may have to figure out how to fold associated systems with it this time. That's still easier than rebuilding most of the world's airports.
 
If you page through old issues of Flying from the 20s, 30s, 40s, 50s, 60s, 70s, 80s , 90s, 00s, 10s and the 20s (again), you’ll see all kinds of ridiculous claims about the next new thing that will revolutionize the world of aviation.

99% never happened.
 
If you page through old issues of Flying from the 20s, 30s, 40s, 50s, 60s, 70s, 80s , 90s, 00s, 10s and the 20s (again), you’ll see all kinds of ridiculous claims about the next new thing that will revolutionize the world of aviation.

99% never happened.


I do remember an AOPA pilot from the 80s that talked about side sticks, large flat screen displays and moving maps, though, and it looked positively sci-fi in those days.... and it all came true!
 
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