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| Boeing 787 Dreamliner https://www.warbirdinformationexchange.org/phpBB3/viewtopic.php?f=17&t=27898 |
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| Author: | APG85 [ Wed Feb 11, 2009 5:41 pm ] |
| Post subject: | Boeing 787 Dreamliner |
This thing looks promising... http://www.newairplane.com/787/ |
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| Author: | The Inspector [ Sat Feb 28, 2009 11:38 pm ] |
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The issues are getting addressed, the airplane will fly, and when it does, it will be spectacular and revolutionary. Most of the issues revolve around the partners who make major sections being 6500 miles and at least one Ocean and two languages away, so lead times an addressing emergent issues take a considerable amount of time to get addressed and resolved, it's not like driving to Renton to personally and face to face ask the guy 'WTF BOZO?' also bear in mind that Boeing is pretty much re-inventing large airplane technology with this project, it's like having a Formula 1 FERARRI dropped onto a Model T production line and expecting it to all resolve itself overnight. PATIENCE PLEASE-the end result will be worth it! |
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| Author: | bdk [ Sun Mar 01, 2009 12:28 am ] |
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As a "next generation" airliner, the 787 also has to meet all the latest FAA requirements. Nothing is grandfathered in like it would be on the derivative 737 or 747 models where only the updates need to meet the new requirements. This will result in an unprecedented level of safety, but since nobody has ever tried to meet some of these requirements before, there have been some challenges. Airbus broke some new ground with the A380, but the 787 will truly be a game changer. I think that the 787 will represent the greatest revolution in airliners since the introduction of the turbojet engine. |
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| Author: | tom d. friedman [ Sun Mar 01, 2009 8:26 am ] |
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damned good looking, both interior & exterior, plush, & state of the art!! |
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| Author: | 262crew [ Sun Mar 01, 2009 2:09 pm ] |
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We had three RR Trent 1000's in or shop a few weeks back, and it was a bit odd to realize that there is no bleed air ducting! I feel fortunate that I am able to see this airplane on a regular basis and witness its progression. |
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| Author: | b29flteng [ Sun Mar 01, 2009 7:32 pm ] |
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The only bleed air is engine anti-icing??? Pressurization is done with electric air pumps. Electric wing anti-ice. Electric brakes. How big and how many generators? |
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| Author: | Second Air Force [ Sun Mar 01, 2009 7:53 pm ] |
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b29flteng wrote: The only bleed air is engine anti-icing??? Pressurization is done with electric air pumps. Electric wing anti-ice. Electric brakes. How big and how many generators?
No more trying to get the PRSOV out of that little hole in the #2 pylon...... No more pneumatic health checks....... No more bad valves from stock........ Sounds like heaven, doesn't it, John? And yeah, the IDGs are huge with lots of redundant sources. I asked a Boeing guy if there was a glider that you towed around with a windfarm on it, but he didn't quite get my meaning. Scott |
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| Author: | CAPFlyer [ Sun Mar 01, 2009 8:00 pm ] |
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Not quite. Electrical system will power the hydraulics (at 5000 PSI). They will use twin electric starter/generators on each engine at 250kVa apiece (4 total) to power everything. Even at that, they've still managed to eliminate 60 miles of wiring over similarly sized aircraft. |
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| Author: | Second Air Force [ Sun Mar 01, 2009 8:39 pm ] |
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That's still a lot more electrical generation than the old clunkers we work on every day. I don't care how many generators it has, the coneheads can deal with them--I got rid of my pneumatic valves!  It's going to be a neat airplane when we finally get them on the line.
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| Author: | 262crew [ Sun Mar 01, 2009 8:42 pm ] |
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The 747-8 will use basically the same engine as the 787 (GEnx) however it will have some bleed air, I have yet to see a GEnx but they will be here soon. And from my experience it will be much much easier to assemble then the 747-400 with Prat, GE's or RR! My personal preference has been the Prat 747-400, to many busy engineers on the RR and GE!!!!!!!!!!!!!!! I believe if engineers had to build airplanes they would be designed way differently  
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| Author: | The Inspector [ Sun Mar 01, 2009 9:25 pm ] |
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7 compressors on each ACM pack, all electric, the pack sets for each side would make a pretty nice dining table for 12 given length and width but a bit low unless you are going to Beni-HaHa's. Cabin altitude 6500 feet, and 29-31% humidity, if you can drive to Denver, you can go anywhere in the world on this airplane. APU is back -up electrical power only. AIRINC 600 DDB's. Speed around .87 (guestimated, could improve when really flying) |
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