TomB From United States of America, joined Nov 2006, 77 posts, RR: 0 Posted (3 years 1 month 4 days 1 hour ago) and read 2438 times:
NASA contracted industry design teams to design potential airliners for the 2030 timeframe. Some common design themes included flying slower (mach .70 to .75), higher (45,000 feet) and using very high by-pass ratio turbofans. Many of the design airframes were generally conventional in shape however the MIT design team presented a hybrid wing body. Their fuselage cross section is like two conventional tubes placed side by side to provide twin aisle seating. This permits the aircraft to have a lifting body nose and reduces the size of the wing and tail.
Here is the link to the three page article in Aviation Week
cobra27 From Slovenia, joined May 2001, 995 posts, RR: 0 Reply 1, posted (3 years 1 month 3 days 20 hours ago) and read 2168 times:
Maybe morphing wing technology or something like that. Reduced wing when fuel get consumed .Laminar flow on swept wings. Single engine turbofan for cruise, other engine may fold into fuselage to reduce drag. Electric actuators and electric bleed. Blended wing for cargo. Maybe in even batery powered airplanes
Burkhard From Germany, joined Nov 2006, 4268 posts, RR: 2 Reply 2, posted (3 years 1 month 3 days 19 hours ago) and read 2119 times:
All meterologists I know warn to fly higher. Water put into the stratosphere will remain there forever and will have climate impacts far above what we discuss now as global warming. Slower is good for environment, no doubt.
planemaker From Tuvalu, joined Aug 2003, 5544 posts, RR: 34 Reply 5, posted (3 years 1 month 3 days 10 hours ago) and read 1699 times:
I am not surprised that they wouldn't want to ruffle any feathers but by 2030 we will certainly have the technology to go single-pilot, single-engine... at the very least on the 20-seater concept that the Cessna team came up with. S-E/S-P will knock at least 500-700 lbs off the take-off weight.
Nationalism is an infantile disease. It is the measles of mankind. - A. Einstein
TomB From United States of America, joined Nov 2006, 77 posts, RR: 0 Reply 6, posted (3 years 1 month 3 days 10 hours ago) and read 1690 times:
Here is a link to a separate article on the two MIT designs that were referenced in the Aviation Week article. The MIT designed D "double bubble" is a twin aisle 180 seat airliner with a lifting body fuselage and engines in the rear. It would supposedly use 70% less fuel than the current models. The article includes pictures.
planemaker From Tuvalu, joined Aug 2003, 5544 posts, RR: 34 Reply 7, posted (3 years 1 month 3 days 7 hours ago) and read 1641 times:
Quoting TomB (Reply 6): It would supposedly use 70% less fuel than the current models. The article includes pictures.
Interestingly they designed a more "conventional" material version that they project would use 50% less fuel...
Not only does the D series meet NASA’s long-term fuel burn, emissions reduction and runway length objectives, but it could also offer large benefits in the near future because the MIT team designed two versions: a higher technology version with 70% fuel-burn reduction, and a version that could be built with conventional aluminum and current jet technology that would burn 50% less fuel and might be more attractive as a lower risk, near-term alternative.
The above, I think, is an indication of Airbus' thinking about their NB replacement strategy... an all-new design at present will only net a 15% improvement whereas in 10 years 30-40% is achievable. And that is why I think Boeing's musings on an all-new design is just musing out loud. If they did go with an all-new design it would be "obsolete" within 10 years while only offering a bit better performance than the NEO.
Nationalism is an infantile disease. It is the measles of mankind. - A. Einstein
GST From United Kingdom, joined Jun 2008, 927 posts, RR: 0 Reply 8, posted (3 years 1 month 3 days 5 hours ago) and read 1602 times:
Quoting TomB (Reply 6): Here is a link to a separate article on the two MIT designs that were referenced in the Aviation Week article. The MIT designed D "double bubble" is a twin aisle 180 seat airliner with a lifting body fuselage and engines in the rear. It would supposedly use 70% less fuel than the current models. The article includes pictures.
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