787 - 9
Similar to the standard 787, the new “9” variant also uses composite materials in its construction. Because of these composite materials the 787 line is said to be 20 percent more fuel efficient.
The new Dreamliner series can also keep cabins under higher pressure with lower humidity, and give passengers a greater view on their travels with its larger electrochromic windows. Additionally, the 787s sport dual engines that can power the craft to Mach .85 (913km/h; 567mph).
The 787-9 differs from from 787-8 in some key ways. First, the new 9 is 6 meters (20ft) longer, with a total length of 63 meters (206ft). With that additional space Boeing has made room for 40 more passengers, upping the total number to 290.
Given its fuel efficiency, the 787-9 has also boosted its range by 555 km (345 miles) giving the plane an effective range of 15,844 km (9,845 miles). With that range the 787-9 could fly from New York to Hong Kong (12,962 km; 8,054 miles) without getting to fumes.
http://www.engineering.com/DesignerEdge/DesignerEdgeArticles/ArticleID/6238/Boeings-787-9-Rolls-Set-to-Take-Flight.aspx
http://787updates.newairplane.com/
Boeing 787 Design Change Process
http://787updates.newairplane.com/Design-Change-Process/The-Boeing-Design-Change-Process
2006
Boeing 787 Design Details
The Boeing 787 program has consciously designed in new, state-of-the-art features and performance that reduce cost and increase airplane availability. These features include extensive use of composites in the airframe and primary structure, an electric systems architecture, a reliable and maintainable design, and an improved maintenance program. Taken together, these features will offer customers a guaranteed reduction in maintenance costs.
Traditionally, the value of a given design solution for an air plane has been measured using factors such as:
Drag
Weight
Noise (cabin and community)
Schedule reliability
Development cost
Build cost
Using these measures to compare design options helps determine the optimum choice.
With the 787, Boeing has expanded the life-cycle design approach by adding two unique performance measures: maintenance cost and airplane availability.
Material Use
Advanced Composites: 50%
Aluminium: 20%
Titanium: 15%
Steel: 10%
Others: 5%
The 787 has replaced virtually all cabin, flight deck and exterior lighting with HID and LED lighting technologies. Overall, 787 lights will last ten to twenty times longer than their in-service counterparts.
http://www.boeing.com/commercial/aeromagazine/articles/qtr_4_06/article_04_1.html
http://www.boeing.com/commercial/aeromagazine/articles/qtr_4_06/article_04_2.html
http://www.boeing.com/commercial/aeromagazine/articles/qtr_4_06/article_04_5.html
http://www.boeing.com/commercial/aeromagazine/articles/qtr_4_06/AERO_Q406_article4.pdf
