If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
7E7 ads
With the discussion about Boeing's presumed demise, and the talk of
the 7E7 being a ruse, I find it interesting that Boeing is advertising the 7E7. I just spotted a banner ad on economist.com, pointing to http://www.newairplane.com. |
#2
|
|||
|
|||
7E7 ads
Certainly looks interesting. Wonder if the plane has been designed in
Hollywood though... Nik. "Lou Minatti" wrote in message om... With the discussion about Boeing's presumed demise, and the talk of the 7E7 being a ruse, I find it interesting that Boeing is advertising the 7E7. I just spotted a banner ad on economist.com, pointing to http://www.newairplane.com. |
#3
|
|||
|
|||
7E7 ads
Lou Minatti wrote:
the 7E7. I just spotted a banner ad on economist.com, pointing to http://www.newairplane.com. What a site devoide of any specific information. However, on the real Boeing site, I did find out 2 important tidbits: http://www.boeing.com/commercial/7e7/releases.html 7E7 has passed the firm concept milestone. Next step is getting authority to offer. They have begin some wind tunnel testing of various wing concepts. And in the very limited technical specs, they do provide a fuselate cross section. Here is a comparison: in cm. cabin fuselage width width 767 470 (507) 340 528 564 7E7 (537) 574 777 580 619 Values in parentheses are estimated, based on total estimate of total wall thickness of 37cm (340 has 36, 777 has 39cm). So the 7E7 will have about 10cm more than the 340. In an 8 across config, it means 1cm more per seats and 1cm more per aisle. At this stage in the 380, the airbus web site had far more technical information and realistic drawings of cabin cross sections. Boeing's site lacks those completely, and their depictions of the cabin are unrealistic. The 380s's lobby is more of a necessity than a show. And it does provide for a realistic bulkhead between the stairs and the cabin on the main deck. (although, the "bar" in the font section of the upper deck is perhaps not so realistic). Boeing might want to make a big impression with a similarly impressive lobby for its 7E7. However, the reality is that airlines will need to have some sort of bulkhead that separates the premium cabin from coach, and will probably want either toilets or galley there. Galleys generally want to be near a door to make their servicing between flights much faster. However, Boeing did announce that it was giving engine manufacturers about 6 additional months to come up with engine offerings. I suspect that Boeing doesn't yet have all the technology/designs that will enable the 7E7 to provide the necessary performance improvements, so more time is needed to get to that point. Airbus delayed the 380 by a number of years for similar reasons. During the 380 delay however, Airbus did proudly discuss of its achievements, testing of various new technologies and concepts (for instance composite horizontal stabilizers the size of a 737's wing). We know that Boeing want to have a composite skin for the 7E7 fuselage. But have we seen/heard of Boeing testing this on cabin cross section mockups ? Have composite materials ever been used for the pressure shell of a commercial aircraft ? If not, you'd think we'd be hearing about Boeong making tests to see how well those materials widthstand the rigors of flight (pressure cycles, temperature changes etc). Perhaps Boeing is far more advanced that it leads up to believe. It might be keeping its new technologies under wraps so that Airbus (and perhaps military competitors) wouldn't steal those ideas. I read an article on the web that said that Boeing had already sunk 7 billion bucks on the 7E7. That is fairly hard to believe considering how vague the Boeing web site is about the 7E7. On the other hand, if Boeing has been keeping its research underwraps, this is perhaps possible. Remember that some of the stuff on the 7E7 may have been worked on sicne the days of the Sonic Cruiser. Lets just hope that Boeing is smarter than it looks. Right how, its 7E7 project doesn't look too credible based on what Boeing has made public. |
#4
|
|||
|
|||
7E7 ads
actually, composite has some definite advanatages as a fuselage material -
mostly, no fatigue and lighter weight for a given strength. Tempaerature is no problem even at the low temps of altitude. A potential problem is that radiation shielding from the metal - even light metal provides a significant radiation stoppage capability - at altitude. Radiation exposure is high enough as it is even with the current designs. "nobody" wrote in message ... Lou Minatti wrote: the 7E7. I just spotted a banner ad on economist.com, pointing to http://www.newairplane.com. What a site devoide of any specific information. However, on the real Boeing site, I did find out 2 important tidbits: http://www.boeing.com/commercial/7e7/releases.html 7E7 has passed the firm concept milestone. Next step is getting authority to offer. They have begin some wind tunnel testing of various wing concepts. And in the very limited technical specs, they do provide a fuselate cross section. Here is a comparison: in cm. cabin fuselage width width 767 470 (507) 340 528 564 7E7 (537) 574 777 580 619 Values in parentheses are estimated, based on total estimate of total wall thickness of 37cm (340 has 36, 777 has 39cm). So the 7E7 will have about 10cm more than the 340. In an 8 across config, it means 1cm more per seats and 1cm more per aisle. At this stage in the 380, the airbus web site had far more technical information and realistic drawings of cabin cross sections. Boeing's site lacks those completely, and their depictions of the cabin are unrealistic. The 380s's lobby is more of a necessity than a show. And it does provide for a realistic bulkhead between the stairs and the cabin on the main deck. (although, the "bar" in the font section of the upper deck is perhaps not so realistic). Boeing might want to make a big impression with a similarly impressive lobby for its 7E7. However, the reality is that airlines will need to have some sort of bulkhead that separates the premium cabin from coach, and will probably want either toilets or galley there. Galleys generally want to be near a door to make their servicing between flights much faster. However, Boeing did announce that it was giving engine manufacturers about 6 additional months to come up with engine offerings. I suspect that Boeing doesn't yet have all the technology/designs that will enable the 7E7 to provide the necessary performance improvements, so more time is needed to get to that point. Airbus delayed the 380 by a number of years for similar reasons. During the 380 delay however, Airbus did proudly discuss of its achievements, testing of various new technologies and concepts (for instance composite horizontal stabilizers the size of a 737's wing). We know that Boeing want to have a composite skin for the 7E7 fuselage. But have we seen/heard of Boeing testing this on cabin cross section mockups ? Have composite materials ever been used for the pressure shell of a commercial aircraft ? If not, you'd think we'd be hearing about Boeong making tests to see how well those materials widthstand the rigors of flight (pressure cycles, temperature changes etc). Perhaps Boeing is far more advanced that it leads up to believe. It might be keeping its new technologies under wraps so that Airbus (and perhaps military competitors) wouldn't steal those ideas. I read an article on the web that said that Boeing had already sunk 7 billion bucks on the 7E7. That is fairly hard to believe considering how vague the Boeing web site is about the 7E7. On the other hand, if Boeing has been keeping its research underwraps, this is perhaps possible. Remember that some of the stuff on the 7E7 may have been worked on sicne the days of the Sonic Cruiser. Lets just hope that Boeing is smarter than it looks. Right how, its 7E7 project doesn't look too credible based on what Boeing has made public. |
Thread Tools | |
Display Modes | |
|
|